http://git-wip-us.apache.org/repos/asf/hbase-site/blob/48b00154/testdevapidocs/src-html/org/apache/hadoop/hbase/master/balancer/TestStochasticLoadBalancer.MockCluster.html ---------------------------------------------------------------------- diff --git a/testdevapidocs/src-html/org/apache/hadoop/hbase/master/balancer/TestStochasticLoadBalancer.MockCluster.html b/testdevapidocs/src-html/org/apache/hadoop/hbase/master/balancer/TestStochasticLoadBalancer.MockCluster.html index 635cf6d..7a50ac9 100644 --- a/testdevapidocs/src-html/org/apache/hadoop/hbase/master/balancer/TestStochasticLoadBalancer.MockCluster.html +++ b/testdevapidocs/src-html/org/apache/hadoop/hbase/master/balancer/TestStochasticLoadBalancer.MockCluster.html @@ -33,690 +33,376 @@ <span class="sourceLineNo">025</span>import static org.mockito.Mockito.when;<a name="line.25"></a> <span class="sourceLineNo">026</span><a name="line.26"></a> <span class="sourceLineNo">027</span>import java.util.ArrayList;<a name="line.27"></a> -<span class="sourceLineNo">028</span>import java.util.HashMap;<a name="line.28"></a> -<span class="sourceLineNo">029</span>import java.util.Iterator;<a name="line.29"></a> -<span class="sourceLineNo">030</span>import java.util.List;<a name="line.30"></a> -<span class="sourceLineNo">031</span>import java.util.Map;<a name="line.31"></a> -<span class="sourceLineNo">032</span>import java.util.Map.Entry;<a name="line.32"></a> -<span class="sourceLineNo">033</span>import java.util.Queue;<a name="line.33"></a> -<span class="sourceLineNo">034</span>import java.util.TreeMap;<a name="line.34"></a> -<span class="sourceLineNo">035</span>import org.apache.hadoop.conf.Configuration;<a name="line.35"></a> -<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.ClusterMetrics;<a name="line.36"></a> -<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.HBaseConfiguration;<a name="line.37"></a> -<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.RegionMetrics;<a name="line.38"></a> -<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.ServerMetrics;<a name="line.39"></a> -<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.ServerName;<a name="line.40"></a> -<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.Size;<a name="line.41"></a> -<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.42"></a> -<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.client.RegionReplicaUtil;<a name="line.43"></a> -<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.master.MockNoopMasterServices;<a name="line.44"></a> -<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.master.RackManager;<a name="line.45"></a> -<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.master.RegionPlan;<a name="line.46"></a> -<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer.Cluster;<a name="line.47"></a> -<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.master.balancer.StochasticLoadBalancer.ServerLocalityCostFunction;<a name="line.48"></a> -<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.testclassification.FlakeyTests;<a name="line.49"></a> -<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.testclassification.MediumTests;<a name="line.50"></a> -<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.51"></a> -<span class="sourceLineNo">052</span>import org.junit.Ignore;<a name="line.52"></a> -<span class="sourceLineNo">053</span>import org.junit.Test;<a name="line.53"></a> -<span class="sourceLineNo">054</span>import org.junit.experimental.categories.Category;<a name="line.54"></a> -<span class="sourceLineNo">055</span>import org.slf4j.Logger;<a name="line.55"></a> -<span class="sourceLineNo">056</span>import org.slf4j.LoggerFactory;<a name="line.56"></a> -<span class="sourceLineNo">057</span><a name="line.57"></a> -<span class="sourceLineNo">058</span>@Category({FlakeyTests.class, MediumTests.class})<a name="line.58"></a> -<span class="sourceLineNo">059</span>public class TestStochasticLoadBalancer extends BalancerTestBase {<a name="line.59"></a> -<span class="sourceLineNo">060</span> public static final String REGION_KEY = "testRegion";<a name="line.60"></a> -<span class="sourceLineNo">061</span> private static final Logger LOG = LoggerFactory.getLogger(TestStochasticLoadBalancer.class);<a name="line.61"></a> -<span class="sourceLineNo">062</span><a name="line.62"></a> -<span class="sourceLineNo">063</span> // Mapping of locality test -> expected locality<a name="line.63"></a> -<span class="sourceLineNo">064</span> private float[] expectedLocalities = {1.0f, 0.0f, 0.50f, 0.25f, 1.0f};<a name="line.64"></a> +<span class="sourceLineNo">028</span>import java.util.List;<a name="line.28"></a> +<span class="sourceLineNo">029</span>import java.util.Map;<a name="line.29"></a> +<span class="sourceLineNo">030</span>import java.util.Queue;<a name="line.30"></a> +<span class="sourceLineNo">031</span>import java.util.TreeMap;<a name="line.31"></a> +<span class="sourceLineNo">032</span>import org.apache.hadoop.conf.Configuration;<a name="line.32"></a> +<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.ClusterMetrics;<a name="line.33"></a> +<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.HBaseConfiguration;<a name="line.34"></a> +<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.RegionMetrics;<a name="line.35"></a> +<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.ServerMetrics;<a name="line.36"></a> +<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.ServerName;<a name="line.37"></a> +<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.Size;<a name="line.38"></a> +<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.39"></a> +<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.master.MockNoopMasterServices;<a name="line.40"></a> +<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.master.RegionPlan;<a name="line.41"></a> +<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer.Cluster;<a name="line.42"></a> +<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.master.balancer.StochasticLoadBalancer.ServerLocalityCostFunction;<a name="line.43"></a> +<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.testclassification.MasterTests;<a name="line.44"></a> +<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.testclassification.MediumTests;<a name="line.45"></a> +<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.46"></a> +<span class="sourceLineNo">047</span>import org.junit.Test;<a name="line.47"></a> +<span class="sourceLineNo">048</span>import org.junit.experimental.categories.Category;<a name="line.48"></a> +<span class="sourceLineNo">049</span><a name="line.49"></a> +<span class="sourceLineNo">050</span>@Category({ MasterTests.class, MediumTests.class })<a name="line.50"></a> +<span class="sourceLineNo">051</span>public class TestStochasticLoadBalancer extends BalancerTestBase {<a name="line.51"></a> +<span class="sourceLineNo">052</span> private static final String REGION_KEY = "testRegion";<a name="line.52"></a> +<span class="sourceLineNo">053</span><a name="line.53"></a> +<span class="sourceLineNo">054</span> // Mapping of locality test -> expected locality<a name="line.54"></a> +<span class="sourceLineNo">055</span> private float[] expectedLocalities = {1.0f, 0.0f, 0.50f, 0.25f, 1.0f};<a name="line.55"></a> +<span class="sourceLineNo">056</span><a name="line.56"></a> +<span class="sourceLineNo">057</span> /**<a name="line.57"></a> +<span class="sourceLineNo">058</span> * Data set for testLocalityCost:<a name="line.58"></a> +<span class="sourceLineNo">059</span> * [test][0][0] = mapping of server to number of regions it hosts<a name="line.59"></a> +<span class="sourceLineNo">060</span> * [test][region + 1][0] = server that region is hosted on<a name="line.60"></a> +<span class="sourceLineNo">061</span> * [test][region + 1][server + 1] = locality for region on server<a name="line.61"></a> +<span class="sourceLineNo">062</span> */<a name="line.62"></a> +<span class="sourceLineNo">063</span><a name="line.63"></a> +<span class="sourceLineNo">064</span> private int[][][] clusterRegionLocationMocks = new int[][][]{<a name="line.64"></a> <span class="sourceLineNo">065</span><a name="line.65"></a> -<span class="sourceLineNo">066</span> /**<a name="line.66"></a> -<span class="sourceLineNo">067</span> * Data set for testLocalityCost:<a name="line.67"></a> -<span class="sourceLineNo">068</span> * [test][0][0] = mapping of server to number of regions it hosts<a name="line.68"></a> -<span class="sourceLineNo">069</span> * [test][region + 1][0] = server that region is hosted on<a name="line.69"></a> -<span class="sourceLineNo">070</span> * [test][region + 1][server + 1] = locality for region on server<a name="line.70"></a> -<span class="sourceLineNo">071</span> */<a name="line.71"></a> -<span class="sourceLineNo">072</span><a name="line.72"></a> -<span class="sourceLineNo">073</span> private int[][][] clusterRegionLocationMocks = new int[][][]{<a name="line.73"></a> +<span class="sourceLineNo">066</span> // Test 1: each region is entirely on server that hosts it<a name="line.66"></a> +<span class="sourceLineNo">067</span> new int[][]{<a name="line.67"></a> +<span class="sourceLineNo">068</span> new int[]{2, 1, 1},<a name="line.68"></a> +<span class="sourceLineNo">069</span> new int[]{2, 0, 0, 100}, // region 0 is hosted and entirely local on server 2<a name="line.69"></a> +<span class="sourceLineNo">070</span> new int[]{0, 100, 0, 0}, // region 1 is hosted and entirely on server 0<a name="line.70"></a> +<span class="sourceLineNo">071</span> new int[]{0, 100, 0, 0}, // region 2 is hosted and entirely on server 0<a name="line.71"></a> +<span class="sourceLineNo">072</span> new int[]{1, 0, 100, 0}, // region 1 is hosted and entirely on server 1<a name="line.72"></a> +<span class="sourceLineNo">073</span> },<a name="line.73"></a> <span class="sourceLineNo">074</span><a name="line.74"></a> -<span class="sourceLineNo">075</span> // Test 1: each region is entirely on server that hosts it<a name="line.75"></a> +<span class="sourceLineNo">075</span> // Test 2: each region is 0% local on the server that hosts it<a name="line.75"></a> <span class="sourceLineNo">076</span> new int[][]{<a name="line.76"></a> -<span class="sourceLineNo">077</span> new int[]{2, 1, 1},<a name="line.77"></a> -<span class="sourceLineNo">078</span> new int[]{2, 0, 0, 100}, // region 0 is hosted and entirely local on server 2<a name="line.78"></a> -<span class="sourceLineNo">079</span> new int[]{0, 100, 0, 0}, // region 1 is hosted and entirely on server 0<a name="line.79"></a> -<span class="sourceLineNo">080</span> new int[]{0, 100, 0, 0}, // region 2 is hosted and entirely on server 0<a name="line.80"></a> -<span class="sourceLineNo">081</span> new int[]{1, 0, 100, 0}, // region 1 is hosted and entirely on server 1<a name="line.81"></a> +<span class="sourceLineNo">077</span> new int[]{1, 2, 1},<a name="line.77"></a> +<span class="sourceLineNo">078</span> new int[]{0, 0, 0, 100}, // region 0 is hosted and entirely local on server 2<a name="line.78"></a> +<span class="sourceLineNo">079</span> new int[]{1, 100, 0, 0}, // region 1 is hosted and entirely on server 0<a name="line.79"></a> +<span class="sourceLineNo">080</span> new int[]{1, 100, 0, 0}, // region 2 is hosted and entirely on server 0<a name="line.80"></a> +<span class="sourceLineNo">081</span> new int[]{2, 0, 100, 0}, // region 1 is hosted and entirely on server 1<a name="line.81"></a> <span class="sourceLineNo">082</span> },<a name="line.82"></a> <span class="sourceLineNo">083</span><a name="line.83"></a> -<span class="sourceLineNo">084</span> // Test 2: each region is 0% local on the server that hosts it<a name="line.84"></a> +<span class="sourceLineNo">084</span> // Test 3: each region is 25% local on the server that hosts it (and 50% locality is possible)<a name="line.84"></a> <span class="sourceLineNo">085</span> new int[][]{<a name="line.85"></a> <span class="sourceLineNo">086</span> new int[]{1, 2, 1},<a name="line.86"></a> -<span class="sourceLineNo">087</span> new int[]{0, 0, 0, 100}, // region 0 is hosted and entirely local on server 2<a name="line.87"></a> -<span class="sourceLineNo">088</span> new int[]{1, 100, 0, 0}, // region 1 is hosted and entirely on server 0<a name="line.88"></a> -<span class="sourceLineNo">089</span> new int[]{1, 100, 0, 0}, // region 2 is hosted and entirely on server 0<a name="line.89"></a> -<span class="sourceLineNo">090</span> new int[]{2, 0, 100, 0}, // region 1 is hosted and entirely on server 1<a name="line.90"></a> +<span class="sourceLineNo">087</span> new int[]{0, 25, 0, 50}, // region 0 is hosted and entirely local on server 2<a name="line.87"></a> +<span class="sourceLineNo">088</span> new int[]{1, 50, 25, 0}, // region 1 is hosted and entirely on server 0<a name="line.88"></a> +<span class="sourceLineNo">089</span> new int[]{1, 50, 25, 0}, // region 2 is hosted and entirely on server 0<a name="line.89"></a> +<span class="sourceLineNo">090</span> new int[]{2, 0, 50, 25}, // region 1 is hosted and entirely on server 1<a name="line.90"></a> <span class="sourceLineNo">091</span> },<a name="line.91"></a> <span class="sourceLineNo">092</span><a name="line.92"></a> -<span class="sourceLineNo">093</span> // Test 3: each region is 25% local on the server that hosts it (and 50% locality is possible)<a name="line.93"></a> +<span class="sourceLineNo">093</span> // Test 4: each region is 25% local on the server that hosts it (and 100% locality is possible)<a name="line.93"></a> <span class="sourceLineNo">094</span> new int[][]{<a name="line.94"></a> <span class="sourceLineNo">095</span> new int[]{1, 2, 1},<a name="line.95"></a> -<span class="sourceLineNo">096</span> new int[]{0, 25, 0, 50}, // region 0 is hosted and entirely local on server 2<a name="line.96"></a> -<span class="sourceLineNo">097</span> new int[]{1, 50, 25, 0}, // region 1 is hosted and entirely on server 0<a name="line.97"></a> -<span class="sourceLineNo">098</span> new int[]{1, 50, 25, 0}, // region 2 is hosted and entirely on server 0<a name="line.98"></a> -<span class="sourceLineNo">099</span> new int[]{2, 0, 50, 25}, // region 1 is hosted and entirely on server 1<a name="line.99"></a> +<span class="sourceLineNo">096</span> new int[]{0, 25, 0, 100}, // region 0 is hosted and entirely local on server 2<a name="line.96"></a> +<span class="sourceLineNo">097</span> new int[]{1, 100, 25, 0}, // region 1 is hosted and entirely on server 0<a name="line.97"></a> +<span class="sourceLineNo">098</span> new int[]{1, 100, 25, 0}, // region 2 is hosted and entirely on server 0<a name="line.98"></a> +<span class="sourceLineNo">099</span> new int[]{2, 0, 100, 25}, // region 1 is hosted and entirely on server 1<a name="line.99"></a> <span class="sourceLineNo">100</span> },<a name="line.100"></a> <span class="sourceLineNo">101</span><a name="line.101"></a> -<span class="sourceLineNo">102</span> // Test 4: each region is 25% local on the server that hosts it (and 100% locality is possible)<a name="line.102"></a> +<span class="sourceLineNo">102</span> // Test 5: each region is 75% local on the server that hosts it (and 75% locality is possible everywhere)<a name="line.102"></a> <span class="sourceLineNo">103</span> new int[][]{<a name="line.103"></a> <span class="sourceLineNo">104</span> new int[]{1, 2, 1},<a name="line.104"></a> -<span class="sourceLineNo">105</span> new int[]{0, 25, 0, 100}, // region 0 is hosted and entirely local on server 2<a name="line.105"></a> -<span class="sourceLineNo">106</span> new int[]{1, 100, 25, 0}, // region 1 is hosted and entirely on server 0<a name="line.106"></a> -<span class="sourceLineNo">107</span> new int[]{1, 100, 25, 0}, // region 2 is hosted and entirely on server 0<a name="line.107"></a> -<span class="sourceLineNo">108</span> new int[]{2, 0, 100, 25}, // region 1 is hosted and entirely on server 1<a name="line.108"></a> +<span class="sourceLineNo">105</span> new int[]{0, 75, 75, 75}, // region 0 is hosted and entirely local on server 2<a name="line.105"></a> +<span class="sourceLineNo">106</span> new int[]{1, 75, 75, 75}, // region 1 is hosted and entirely on server 0<a name="line.106"></a> +<span class="sourceLineNo">107</span> new int[]{1, 75, 75, 75}, // region 2 is hosted and entirely on server 0<a name="line.107"></a> +<span class="sourceLineNo">108</span> new int[]{2, 75, 75, 75}, // region 1 is hosted and entirely on server 1<a name="line.108"></a> <span class="sourceLineNo">109</span> },<a name="line.109"></a> -<span class="sourceLineNo">110</span><a name="line.110"></a> -<span class="sourceLineNo">111</span> // Test 5: each region is 75% local on the server that hosts it (and 75% locality is possible everywhere)<a name="line.111"></a> -<span class="sourceLineNo">112</span> new int[][]{<a name="line.112"></a> -<span class="sourceLineNo">113</span> new int[]{1, 2, 1},<a name="line.113"></a> -<span class="sourceLineNo">114</span> new int[]{0, 75, 75, 75}, // region 0 is hosted and entirely local on server 2<a name="line.114"></a> -<span class="sourceLineNo">115</span> new int[]{1, 75, 75, 75}, // region 1 is hosted and entirely on server 0<a name="line.115"></a> -<span class="sourceLineNo">116</span> new int[]{1, 75, 75, 75}, // region 2 is hosted and entirely on server 0<a name="line.116"></a> -<span class="sourceLineNo">117</span> new int[]{2, 75, 75, 75}, // region 1 is hosted and entirely on server 1<a name="line.117"></a> -<span class="sourceLineNo">118</span> },<a name="line.118"></a> -<span class="sourceLineNo">119</span> };<a name="line.119"></a> -<span class="sourceLineNo">120</span><a name="line.120"></a> -<span class="sourceLineNo">121</span><a name="line.121"></a> -<span class="sourceLineNo">122</span> @Test<a name="line.122"></a> -<span class="sourceLineNo">123</span> public void testKeepRegionLoad() throws Exception {<a name="line.123"></a> -<span class="sourceLineNo">124</span><a name="line.124"></a> -<span class="sourceLineNo">125</span> ServerName sn = ServerName.valueOf("test:8080", 100);<a name="line.125"></a> -<span class="sourceLineNo">126</span> int numClusterStatusToAdd = 20000;<a name="line.126"></a> -<span class="sourceLineNo">127</span> for (int i = 0; i < numClusterStatusToAdd; i++) {<a name="line.127"></a> -<span class="sourceLineNo">128</span> ServerMetrics sl = mock(ServerMetrics.class);<a name="line.128"></a> +<span class="sourceLineNo">110</span> };<a name="line.110"></a> +<span class="sourceLineNo">111</span><a name="line.111"></a> +<span class="sourceLineNo">112</span> @Test<a name="line.112"></a> +<span class="sourceLineNo">113</span> public void testKeepRegionLoad() throws Exception {<a name="line.113"></a> +<span class="sourceLineNo">114</span><a name="line.114"></a> +<span class="sourceLineNo">115</span> ServerName sn = ServerName.valueOf("test:8080", 100);<a name="line.115"></a> +<span class="sourceLineNo">116</span> int numClusterStatusToAdd = 20000;<a name="line.116"></a> +<span class="sourceLineNo">117</span> for (int i = 0; i < numClusterStatusToAdd; i++) {<a name="line.117"></a> +<span class="sourceLineNo">118</span> ServerMetrics sl = mock(ServerMetrics.class);<a name="line.118"></a> +<span class="sourceLineNo">119</span><a name="line.119"></a> +<span class="sourceLineNo">120</span> RegionMetrics rl = mock(RegionMetrics.class);<a name="line.120"></a> +<span class="sourceLineNo">121</span> when(rl.getReadRequestCount()).thenReturn(0L);<a name="line.121"></a> +<span class="sourceLineNo">122</span> when(rl.getWriteRequestCount()).thenReturn(0L);<a name="line.122"></a> +<span class="sourceLineNo">123</span> when(rl.getMemStoreSize()).thenReturn(Size.ZERO);<a name="line.123"></a> +<span class="sourceLineNo">124</span> when(rl.getStoreFileSize()).thenReturn(new Size(i, Size.Unit.MEGABYTE));<a name="line.124"></a> +<span class="sourceLineNo">125</span><a name="line.125"></a> +<span class="sourceLineNo">126</span> Map<byte[], RegionMetrics> regionLoadMap = new TreeMap<>(Bytes.BYTES_COMPARATOR);<a name="line.126"></a> +<span class="sourceLineNo">127</span> regionLoadMap.put(Bytes.toBytes(REGION_KEY), rl);<a name="line.127"></a> +<span class="sourceLineNo">128</span> when(sl.getRegionMetrics()).thenReturn(regionLoadMap);<a name="line.128"></a> <span class="sourceLineNo">129</span><a name="line.129"></a> -<span class="sourceLineNo">130</span> RegionMetrics rl = mock(RegionMetrics.class);<a name="line.130"></a> -<span class="sourceLineNo">131</span> when(rl.getReadRequestCount()).thenReturn(0L);<a name="line.131"></a> -<span class="sourceLineNo">132</span> when(rl.getWriteRequestCount()).thenReturn(0L);<a name="line.132"></a> -<span class="sourceLineNo">133</span> when(rl.getMemStoreSize()).thenReturn(Size.ZERO);<a name="line.133"></a> -<span class="sourceLineNo">134</span> when(rl.getStoreFileSize()).thenReturn(new Size(i, Size.Unit.MEGABYTE));<a name="line.134"></a> +<span class="sourceLineNo">130</span> ClusterMetrics clusterStatus = mock(ClusterMetrics.class);<a name="line.130"></a> +<span class="sourceLineNo">131</span> Map<ServerName, ServerMetrics> serverMetricsMap = new TreeMap<>();<a name="line.131"></a> +<span class="sourceLineNo">132</span> serverMetricsMap.put(sn, sl);<a name="line.132"></a> +<span class="sourceLineNo">133</span> when(clusterStatus.getLiveServerMetrics()).thenReturn(serverMetricsMap);<a name="line.133"></a> +<span class="sourceLineNo">134</span>// when(clusterStatus.getLoad(sn)).thenReturn(sl);<a name="line.134"></a> <span class="sourceLineNo">135</span><a name="line.135"></a> -<span class="sourceLineNo">136</span> Map<byte[], RegionMetrics> regionLoadMap = new TreeMap<>(Bytes.BYTES_COMPARATOR);<a name="line.136"></a> -<span class="sourceLineNo">137</span> regionLoadMap.put(Bytes.toBytes(REGION_KEY), rl);<a name="line.137"></a> -<span class="sourceLineNo">138</span> when(sl.getRegionMetrics()).thenReturn(regionLoadMap);<a name="line.138"></a> -<span class="sourceLineNo">139</span><a name="line.139"></a> -<span class="sourceLineNo">140</span> ClusterMetrics clusterStatus = mock(ClusterMetrics.class);<a name="line.140"></a> -<span class="sourceLineNo">141</span> Map<ServerName, ServerMetrics> serverMetricsMap = new TreeMap<>();<a name="line.141"></a> -<span class="sourceLineNo">142</span> serverMetricsMap.put(sn, sl);<a name="line.142"></a> -<span class="sourceLineNo">143</span> when(clusterStatus.getLiveServerMetrics()).thenReturn(serverMetricsMap);<a name="line.143"></a> -<span class="sourceLineNo">144</span>// when(clusterStatus.getLoad(sn)).thenReturn(sl);<a name="line.144"></a> -<span class="sourceLineNo">145</span><a name="line.145"></a> -<span class="sourceLineNo">146</span> loadBalancer.setClusterMetrics(clusterStatus);<a name="line.146"></a> +<span class="sourceLineNo">136</span> loadBalancer.setClusterMetrics(clusterStatus);<a name="line.136"></a> +<span class="sourceLineNo">137</span> }<a name="line.137"></a> +<span class="sourceLineNo">138</span> assertTrue(loadBalancer.loads.get(REGION_KEY) != null);<a name="line.138"></a> +<span class="sourceLineNo">139</span> assertTrue(loadBalancer.loads.get(REGION_KEY).size() == 15);<a name="line.139"></a> +<span class="sourceLineNo">140</span><a name="line.140"></a> +<span class="sourceLineNo">141</span> Queue<BalancerRegionLoad> loads = loadBalancer.loads.get(REGION_KEY);<a name="line.141"></a> +<span class="sourceLineNo">142</span> int i = 0;<a name="line.142"></a> +<span class="sourceLineNo">143</span> while(loads.size() > 0) {<a name="line.143"></a> +<span class="sourceLineNo">144</span> BalancerRegionLoad rl = loads.remove();<a name="line.144"></a> +<span class="sourceLineNo">145</span> assertEquals(i + (numClusterStatusToAdd - 15), rl.getStorefileSizeMB());<a name="line.145"></a> +<span class="sourceLineNo">146</span> i ++;<a name="line.146"></a> <span class="sourceLineNo">147</span> }<a name="line.147"></a> -<span class="sourceLineNo">148</span> assertTrue(loadBalancer.loads.get(REGION_KEY) != null);<a name="line.148"></a> -<span class="sourceLineNo">149</span> assertTrue(loadBalancer.loads.get(REGION_KEY).size() == 15);<a name="line.149"></a> -<span class="sourceLineNo">150</span><a name="line.150"></a> -<span class="sourceLineNo">151</span> Queue<BalancerRegionLoad> loads = loadBalancer.loads.get(REGION_KEY);<a name="line.151"></a> -<span class="sourceLineNo">152</span> int i = 0;<a name="line.152"></a> -<span class="sourceLineNo">153</span> while(loads.size() > 0) {<a name="line.153"></a> -<span class="sourceLineNo">154</span> BalancerRegionLoad rl = loads.remove();<a name="line.154"></a> -<span class="sourceLineNo">155</span> assertEquals(i + (numClusterStatusToAdd - 15), rl.getStorefileSizeMB());<a name="line.155"></a> -<span class="sourceLineNo">156</span> i ++;<a name="line.156"></a> -<span class="sourceLineNo">157</span> }<a name="line.157"></a> -<span class="sourceLineNo">158</span> }<a name="line.158"></a> -<span class="sourceLineNo">159</span><a name="line.159"></a> -<span class="sourceLineNo">160</span> @Test<a name="line.160"></a> -<span class="sourceLineNo">161</span> public void testNeedBalance() {<a name="line.161"></a> -<span class="sourceLineNo">162</span> float minCost = conf.getFloat("hbase.master.balancer.stochastic.minCostNeedBalance", 0.05f);<a name="line.162"></a> -<span class="sourceLineNo">163</span> conf.setFloat("hbase.master.balancer.stochastic.minCostNeedBalance", 1.0f);<a name="line.163"></a> -<span class="sourceLineNo">164</span> loadBalancer.setConf(conf);<a name="line.164"></a> -<span class="sourceLineNo">165</span> for (int[] mockCluster : clusterStateMocks) {<a name="line.165"></a> -<span class="sourceLineNo">166</span> Map<ServerName, List<RegionInfo>> servers = mockClusterServers(mockCluster);<a name="line.166"></a> -<span class="sourceLineNo">167</span> List<RegionPlan> plans = loadBalancer.balanceCluster(servers);<a name="line.167"></a> -<span class="sourceLineNo">168</span> assertNull(plans);<a name="line.168"></a> -<span class="sourceLineNo">169</span> }<a name="line.169"></a> -<span class="sourceLineNo">170</span> // reset config<a name="line.170"></a> -<span class="sourceLineNo">171</span> conf.setFloat("hbase.master.balancer.stochastic.minCostNeedBalance", minCost);<a name="line.171"></a> -<span class="sourceLineNo">172</span> loadBalancer.setConf(conf);<a name="line.172"></a> -<span class="sourceLineNo">173</span> }<a name="line.173"></a> -<span class="sourceLineNo">174</span><a name="line.174"></a> -<span class="sourceLineNo">175</span> /**<a name="line.175"></a> -<span class="sourceLineNo">176</span> * Test the load balancing algorithm.<a name="line.176"></a> -<span class="sourceLineNo">177</span> *<a name="line.177"></a> -<span class="sourceLineNo">178</span> * Invariant is that all servers should be hosting either floor(average) or<a name="line.178"></a> -<span class="sourceLineNo">179</span> * ceiling(average)<a name="line.179"></a> -<span class="sourceLineNo">180</span> *<a name="line.180"></a> -<span class="sourceLineNo">181</span> * @throws Exception<a name="line.181"></a> -<span class="sourceLineNo">182</span> */<a name="line.182"></a> -<span class="sourceLineNo">183</span> @Test<a name="line.183"></a> -<span class="sourceLineNo">184</span> public void testBalanceCluster() throws Exception {<a name="line.184"></a> -<span class="sourceLineNo">185</span> conf.setLong(StochasticLoadBalancer.MAX_STEPS_KEY, 2000000L);<a name="line.185"></a> -<span class="sourceLineNo">186</span> conf.setLong("hbase.master.balancer.stochastic.maxRunningTime", 90 * 1000); // 90 sec<a name="line.186"></a> -<span class="sourceLineNo">187</span> conf.setFloat("hbase.master.balancer.stochastic.maxMovePercent", 1.0f);<a name="line.187"></a> -<span class="sourceLineNo">188</span> loadBalancer.setConf(conf);<a name="line.188"></a> -<span class="sourceLineNo">189</span> for (int[] mockCluster : clusterStateMocks) {<a name="line.189"></a> -<span class="sourceLineNo">190</span> Map<ServerName, List<RegionInfo>> servers = mockClusterServers(mockCluster);<a name="line.190"></a> -<span class="sourceLineNo">191</span> List<ServerAndLoad> list = convertToList(servers);<a name="line.191"></a> -<span class="sourceLineNo">192</span> LOG.info("Mock Cluster : " + printMock(list) + " " + printStats(list));<a name="line.192"></a> -<span class="sourceLineNo">193</span> List<RegionPlan> plans = loadBalancer.balanceCluster(servers);<a name="line.193"></a> -<span class="sourceLineNo">194</span> List<ServerAndLoad> balancedCluster = reconcile(list, plans, servers);<a name="line.194"></a> -<span class="sourceLineNo">195</span> LOG.info("Mock Balance : " + printMock(balancedCluster));<a name="line.195"></a> -<span class="sourceLineNo">196</span> assertClusterAsBalanced(balancedCluster);<a name="line.196"></a> -<span class="sourceLineNo">197</span> List<RegionPlan> secondPlans = loadBalancer.balanceCluster(servers);<a name="line.197"></a> -<span class="sourceLineNo">198</span> assertNull(secondPlans);<a name="line.198"></a> -<span class="sourceLineNo">199</span> for (Map.Entry<ServerName, List<RegionInfo>> entry : servers.entrySet()) {<a name="line.199"></a> -<span class="sourceLineNo">200</span> returnRegions(entry.getValue());<a name="line.200"></a> -<span class="sourceLineNo">201</span> returnServer(entry.getKey());<a name="line.201"></a> -<span class="sourceLineNo">202</span> }<a name="line.202"></a> -<span class="sourceLineNo">203</span> }<a name="line.203"></a> -<span class="sourceLineNo">204</span> }<a name="line.204"></a> +<span class="sourceLineNo">148</span> }<a name="line.148"></a> +<span class="sourceLineNo">149</span><a name="line.149"></a> +<span class="sourceLineNo">150</span> @Test<a name="line.150"></a> +<span class="sourceLineNo">151</span> public void testNeedBalance() {<a name="line.151"></a> +<span class="sourceLineNo">152</span> float minCost = conf.getFloat("hbase.master.balancer.stochastic.minCostNeedBalance", 0.05f);<a name="line.152"></a> +<span class="sourceLineNo">153</span> conf.setFloat("hbase.master.balancer.stochastic.minCostNeedBalance", 1.0f);<a name="line.153"></a> +<span class="sourceLineNo">154</span> loadBalancer.setConf(conf);<a name="line.154"></a> +<span class="sourceLineNo">155</span> for (int[] mockCluster : clusterStateMocks) {<a name="line.155"></a> +<span class="sourceLineNo">156</span> Map<ServerName, List<RegionInfo>> servers = mockClusterServers(mockCluster);<a name="line.156"></a> +<span class="sourceLineNo">157</span> List<RegionPlan> plans = loadBalancer.balanceCluster(servers);<a name="line.157"></a> +<span class="sourceLineNo">158</span> assertNull(plans);<a name="line.158"></a> +<span class="sourceLineNo">159</span> }<a name="line.159"></a> +<span class="sourceLineNo">160</span> // reset config<a name="line.160"></a> +<span class="sourceLineNo">161</span> conf.setFloat("hbase.master.balancer.stochastic.minCostNeedBalance", minCost);<a name="line.161"></a> +<span class="sourceLineNo">162</span> loadBalancer.setConf(conf);<a name="line.162"></a> +<span class="sourceLineNo">163</span> }<a name="line.163"></a> +<span class="sourceLineNo">164</span><a name="line.164"></a> +<span class="sourceLineNo">165</span> @Test<a name="line.165"></a> +<span class="sourceLineNo">166</span> public void testLocalityCost() throws Exception {<a name="line.166"></a> +<span class="sourceLineNo">167</span> Configuration conf = HBaseConfiguration.create();<a name="line.167"></a> +<span class="sourceLineNo">168</span> MockNoopMasterServices master = new MockNoopMasterServices();<a name="line.168"></a> +<span class="sourceLineNo">169</span> StochasticLoadBalancer.CostFunction<a name="line.169"></a> +<span class="sourceLineNo">170</span> costFunction = new ServerLocalityCostFunction(conf, master);<a name="line.170"></a> +<span class="sourceLineNo">171</span><a name="line.171"></a> +<span class="sourceLineNo">172</span> for (int test = 0; test < clusterRegionLocationMocks.length; test++) {<a name="line.172"></a> +<span class="sourceLineNo">173</span> int[][] clusterRegionLocations = clusterRegionLocationMocks[test];<a name="line.173"></a> +<span class="sourceLineNo">174</span> MockCluster cluster = new MockCluster(clusterRegionLocations);<a name="line.174"></a> +<span class="sourceLineNo">175</span> costFunction.init(cluster);<a name="line.175"></a> +<span class="sourceLineNo">176</span> double cost = costFunction.cost();<a name="line.176"></a> +<span class="sourceLineNo">177</span> double expected = 1 - expectedLocalities[test];<a name="line.177"></a> +<span class="sourceLineNo">178</span> assertEquals(expected, cost, 0.001);<a name="line.178"></a> +<span class="sourceLineNo">179</span> }<a name="line.179"></a> +<span class="sourceLineNo">180</span> }<a name="line.180"></a> +<span class="sourceLineNo">181</span><a name="line.181"></a> +<span class="sourceLineNo">182</span> @Test<a name="line.182"></a> +<span class="sourceLineNo">183</span> public void testMoveCost() throws Exception {<a name="line.183"></a> +<span class="sourceLineNo">184</span> Configuration conf = HBaseConfiguration.create();<a name="line.184"></a> +<span class="sourceLineNo">185</span> StochasticLoadBalancer.CostFunction<a name="line.185"></a> +<span class="sourceLineNo">186</span> costFunction = new StochasticLoadBalancer.MoveCostFunction(conf);<a name="line.186"></a> +<span class="sourceLineNo">187</span> for (int[] mockCluster : clusterStateMocks) {<a name="line.187"></a> +<span class="sourceLineNo">188</span> BaseLoadBalancer.Cluster cluster = mockCluster(mockCluster);<a name="line.188"></a> +<span class="sourceLineNo">189</span> costFunction.init(cluster);<a name="line.189"></a> +<span class="sourceLineNo">190</span> double cost = costFunction.cost();<a name="line.190"></a> +<span class="sourceLineNo">191</span> assertEquals(0.0f, cost, 0.001);<a name="line.191"></a> +<span class="sourceLineNo">192</span><a name="line.192"></a> +<span class="sourceLineNo">193</span> // cluster region number is smaller than maxMoves=600<a name="line.193"></a> +<span class="sourceLineNo">194</span> cluster.setNumRegions(200);<a name="line.194"></a> +<span class="sourceLineNo">195</span> cluster.setNumMovedRegions(10);<a name="line.195"></a> +<span class="sourceLineNo">196</span> cost = costFunction.cost();<a name="line.196"></a> +<span class="sourceLineNo">197</span> assertEquals(0.05f, cost, 0.001);<a name="line.197"></a> +<span class="sourceLineNo">198</span> cluster.setNumMovedRegions(100);<a name="line.198"></a> +<span class="sourceLineNo">199</span> cost = costFunction.cost();<a name="line.199"></a> +<span class="sourceLineNo">200</span> assertEquals(0.5f, cost, 0.001);<a name="line.200"></a> +<span class="sourceLineNo">201</span> cluster.setNumMovedRegions(200);<a name="line.201"></a> +<span class="sourceLineNo">202</span> cost = costFunction.cost();<a name="line.202"></a> +<span class="sourceLineNo">203</span> assertEquals(1.0f, cost, 0.001);<a name="line.203"></a> +<span class="sourceLineNo">204</span><a name="line.204"></a> <span class="sourceLineNo">205</span><a name="line.205"></a> -<span class="sourceLineNo">206</span> @Test<a name="line.206"></a> -<span class="sourceLineNo">207</span> public void testLocalityCost() throws Exception {<a name="line.207"></a> -<span class="sourceLineNo">208</span> Configuration conf = HBaseConfiguration.create();<a name="line.208"></a> -<span class="sourceLineNo">209</span> MockNoopMasterServices master = new MockNoopMasterServices();<a name="line.209"></a> -<span class="sourceLineNo">210</span> StochasticLoadBalancer.CostFunction<a name="line.210"></a> -<span class="sourceLineNo">211</span> costFunction = new ServerLocalityCostFunction(conf, master);<a name="line.211"></a> -<span class="sourceLineNo">212</span><a name="line.212"></a> -<span class="sourceLineNo">213</span> for (int test = 0; test < clusterRegionLocationMocks.length; test++) {<a name="line.213"></a> -<span class="sourceLineNo">214</span> int[][] clusterRegionLocations = clusterRegionLocationMocks[test];<a name="line.214"></a> -<span class="sourceLineNo">215</span> MockCluster cluster = new MockCluster(clusterRegionLocations);<a name="line.215"></a> -<span class="sourceLineNo">216</span> costFunction.init(cluster);<a name="line.216"></a> -<span class="sourceLineNo">217</span> double cost = costFunction.cost();<a name="line.217"></a> -<span class="sourceLineNo">218</span> double expected = 1 - expectedLocalities[test];<a name="line.218"></a> -<span class="sourceLineNo">219</span> assertEquals(expected, cost, 0.001);<a name="line.219"></a> -<span class="sourceLineNo">220</span> }<a name="line.220"></a> -<span class="sourceLineNo">221</span> }<a name="line.221"></a> -<span class="sourceLineNo">222</span><a name="line.222"></a> -<span class="sourceLineNo">223</span> @Test<a name="line.223"></a> -<span class="sourceLineNo">224</span> public void testMoveCost() throws Exception {<a name="line.224"></a> -<span class="sourceLineNo">225</span> Configuration conf = HBaseConfiguration.create();<a name="line.225"></a> -<span class="sourceLineNo">226</span> StochasticLoadBalancer.CostFunction<a name="line.226"></a> -<span class="sourceLineNo">227</span> costFunction = new StochasticLoadBalancer.MoveCostFunction(conf);<a name="line.227"></a> -<span class="sourceLineNo">228</span> for (int[] mockCluster : clusterStateMocks) {<a name="line.228"></a> -<span class="sourceLineNo">229</span> BaseLoadBalancer.Cluster cluster = mockCluster(mockCluster);<a name="line.229"></a> -<span class="sourceLineNo">230</span> costFunction.init(cluster);<a name="line.230"></a> -<span class="sourceLineNo">231</span> double cost = costFunction.cost();<a name="line.231"></a> -<span class="sourceLineNo">232</span> assertEquals(0.0f, cost, 0.001);<a name="line.232"></a> -<span class="sourceLineNo">233</span><a name="line.233"></a> -<span class="sourceLineNo">234</span> // cluster region number is smaller than maxMoves=600<a name="line.234"></a> -<span class="sourceLineNo">235</span> cluster.setNumRegions(200);<a name="line.235"></a> -<span class="sourceLineNo">236</span> cluster.setNumMovedRegions(10);<a name="line.236"></a> -<span class="sourceLineNo">237</span> cost = costFunction.cost();<a name="line.237"></a> -<span class="sourceLineNo">238</span> assertEquals(0.05f, cost, 0.001);<a name="line.238"></a> -<span class="sourceLineNo">239</span> cluster.setNumMovedRegions(100);<a name="line.239"></a> -<span class="sourceLineNo">240</span> cost = costFunction.cost();<a name="line.240"></a> -<span class="sourceLineNo">241</span> assertEquals(0.5f, cost, 0.001);<a name="line.241"></a> -<span class="sourceLineNo">242</span> cluster.setNumMovedRegions(200);<a name="line.242"></a> -<span class="sourceLineNo">243</span> cost = costFunction.cost();<a name="line.243"></a> -<span class="sourceLineNo">244</span> assertEquals(1.0f, cost, 0.001);<a name="line.244"></a> +<span class="sourceLineNo">206</span> // cluster region number is bigger than maxMoves=2500<a name="line.206"></a> +<span class="sourceLineNo">207</span> cluster.setNumRegions(10000);<a name="line.207"></a> +<span class="sourceLineNo">208</span> cluster.setNumMovedRegions(250);<a name="line.208"></a> +<span class="sourceLineNo">209</span> cost = costFunction.cost();<a name="line.209"></a> +<span class="sourceLineNo">210</span> assertEquals(0.1f, cost, 0.001);<a name="line.210"></a> +<span class="sourceLineNo">211</span> cluster.setNumMovedRegions(1250);<a name="line.211"></a> +<span class="sourceLineNo">212</span> cost = costFunction.cost();<a name="line.212"></a> +<span class="sourceLineNo">213</span> assertEquals(0.5f, cost, 0.001);<a name="line.213"></a> +<span class="sourceLineNo">214</span> cluster.setNumMovedRegions(2500);<a name="line.214"></a> +<span class="sourceLineNo">215</span> cost = costFunction.cost();<a name="line.215"></a> +<span class="sourceLineNo">216</span> assertEquals(1.0f, cost, 0.01);<a name="line.216"></a> +<span class="sourceLineNo">217</span> }<a name="line.217"></a> +<span class="sourceLineNo">218</span> }<a name="line.218"></a> +<span class="sourceLineNo">219</span><a name="line.219"></a> +<span class="sourceLineNo">220</span> @Test<a name="line.220"></a> +<span class="sourceLineNo">221</span> public void testSkewCost() {<a name="line.221"></a> +<span class="sourceLineNo">222</span> Configuration conf = HBaseConfiguration.create();<a name="line.222"></a> +<span class="sourceLineNo">223</span> StochasticLoadBalancer.CostFunction<a name="line.223"></a> +<span class="sourceLineNo">224</span> costFunction = new StochasticLoadBalancer.RegionCountSkewCostFunction(conf);<a name="line.224"></a> +<span class="sourceLineNo">225</span> for (int[] mockCluster : clusterStateMocks) {<a name="line.225"></a> +<span class="sourceLineNo">226</span> costFunction.init(mockCluster(mockCluster));<a name="line.226"></a> +<span class="sourceLineNo">227</span> double cost = costFunction.cost();<a name="line.227"></a> +<span class="sourceLineNo">228</span> assertTrue(cost >= 0);<a name="line.228"></a> +<span class="sourceLineNo">229</span> assertTrue(cost <= 1.01);<a name="line.229"></a> +<span class="sourceLineNo">230</span> }<a name="line.230"></a> +<span class="sourceLineNo">231</span><a name="line.231"></a> +<span class="sourceLineNo">232</span> costFunction.init(mockCluster(new int[]{0, 0, 0, 0, 1}));<a name="line.232"></a> +<span class="sourceLineNo">233</span> assertEquals(0,costFunction.cost(), 0.01);<a name="line.233"></a> +<span class="sourceLineNo">234</span> costFunction.init(mockCluster(new int[]{0, 0, 0, 1, 1}));<a name="line.234"></a> +<span class="sourceLineNo">235</span> assertEquals(0, costFunction.cost(), 0.01);<a name="line.235"></a> +<span class="sourceLineNo">236</span> costFunction.init(mockCluster(new int[]{0, 0, 1, 1, 1}));<a name="line.236"></a> +<span class="sourceLineNo">237</span> assertEquals(0, costFunction.cost(), 0.01);<a name="line.237"></a> +<span class="sourceLineNo">238</span> costFunction.init(mockCluster(new int[]{0, 1, 1, 1, 1}));<a name="line.238"></a> +<span class="sourceLineNo">239</span> assertEquals(0, costFunction.cost(), 0.01);<a name="line.239"></a> +<span class="sourceLineNo">240</span> costFunction.init(mockCluster(new int[]{1, 1, 1, 1, 1}));<a name="line.240"></a> +<span class="sourceLineNo">241</span> assertEquals(0, costFunction.cost(), 0.01);<a name="line.241"></a> +<span class="sourceLineNo">242</span> costFunction.init(mockCluster(new int[]{10000, 0, 0, 0, 0}));<a name="line.242"></a> +<span class="sourceLineNo">243</span> assertEquals(1, costFunction.cost(), 0.01);<a name="line.243"></a> +<span class="sourceLineNo">244</span> }<a name="line.244"></a> <span class="sourceLineNo">245</span><a name="line.245"></a> -<span class="sourceLineNo">246</span><a name="line.246"></a> -<span class="sourceLineNo">247</span> // cluster region number is bigger than maxMoves=2500<a name="line.247"></a> -<span class="sourceLineNo">248</span> cluster.setNumRegions(10000);<a name="line.248"></a> -<span class="sourceLineNo">249</span> cluster.setNumMovedRegions(250);<a name="line.249"></a> -<span class="sourceLineNo">250</span> cost = costFunction.cost();<a name="line.250"></a> -<span class="sourceLineNo">251</span> assertEquals(0.1f, cost, 0.001);<a name="line.251"></a> -<span class="sourceLineNo">252</span> cluster.setNumMovedRegions(1250);<a name="line.252"></a> -<span class="sourceLineNo">253</span> cost = costFunction.cost();<a name="line.253"></a> -<span class="sourceLineNo">254</span> assertEquals(0.5f, cost, 0.001);<a name="line.254"></a> -<span class="sourceLineNo">255</span> cluster.setNumMovedRegions(2500);<a name="line.255"></a> -<span class="sourceLineNo">256</span> cost = costFunction.cost();<a name="line.256"></a> -<span class="sourceLineNo">257</span> assertEquals(1.0f, cost, 0.01);<a name="line.257"></a> -<span class="sourceLineNo">258</span> }<a name="line.258"></a> -<span class="sourceLineNo">259</span> }<a name="line.259"></a> -<span class="sourceLineNo">260</span><a name="line.260"></a> -<span class="sourceLineNo">261</span> @Test<a name="line.261"></a> -<span class="sourceLineNo">262</span> public void testSkewCost() {<a name="line.262"></a> -<span class="sourceLineNo">263</span> Configuration conf = HBaseConfiguration.create();<a name="line.263"></a> -<span class="sourceLineNo">264</span> StochasticLoadBalancer.CostFunction<a name="line.264"></a> -<span class="sourceLineNo">265</span> costFunction = new StochasticLoadBalancer.RegionCountSkewCostFunction(conf);<a name="line.265"></a> -<span class="sourceLineNo">266</span> for (int[] mockCluster : clusterStateMocks) {<a name="line.266"></a> -<span class="sourceLineNo">267</span> costFunction.init(mockCluster(mockCluster));<a name="line.267"></a> -<span class="sourceLineNo">268</span> double cost = costFunction.cost();<a name="line.268"></a> -<span class="sourceLineNo">269</span> assertTrue(cost >= 0);<a name="line.269"></a> -<span class="sourceLineNo">270</span> assertTrue(cost <= 1.01);<a name="line.270"></a> -<span class="sourceLineNo">271</span> }<a name="line.271"></a> -<span class="sourceLineNo">272</span><a name="line.272"></a> -<span class="sourceLineNo">273</span> costFunction.init(mockCluster(new int[]{0, 0, 0, 0, 1}));<a name="line.273"></a> -<span class="sourceLineNo">274</span> assertEquals(0,costFunction.cost(), 0.01);<a name="line.274"></a> -<span class="sourceLineNo">275</span> costFunction.init(mockCluster(new int[]{0, 0, 0, 1, 1}));<a name="line.275"></a> -<span class="sourceLineNo">276</span> assertEquals(0, costFunction.cost(), 0.01);<a name="line.276"></a> -<span class="sourceLineNo">277</span> costFunction.init(mockCluster(new int[]{0, 0, 1, 1, 1}));<a name="line.277"></a> -<span class="sourceLineNo">278</span> assertEquals(0, costFunction.cost(), 0.01);<a name="line.278"></a> -<span class="sourceLineNo">279</span> costFunction.init(mockCluster(new int[]{0, 1, 1, 1, 1}));<a name="line.279"></a> -<span class="sourceLineNo">280</span> assertEquals(0, costFunction.cost(), 0.01);<a name="line.280"></a> -<span class="sourceLineNo">281</span> costFunction.init(mockCluster(new int[]{1, 1, 1, 1, 1}));<a name="line.281"></a> -<span class="sourceLineNo">282</span> assertEquals(0, costFunction.cost(), 0.01);<a name="line.282"></a> -<span class="sourceLineNo">283</span> costFunction.init(mockCluster(new int[]{10000, 0, 0, 0, 0}));<a name="line.283"></a> -<span class="sourceLineNo">284</span> assertEquals(1, costFunction.cost(), 0.01);<a name="line.284"></a> -<span class="sourceLineNo">285</span> }<a name="line.285"></a> -<span class="sourceLineNo">286</span><a name="line.286"></a> -<span class="sourceLineNo">287</span> @Test<a name="line.287"></a> -<span class="sourceLineNo">288</span> public void testCostAfterUndoAction() {<a name="line.288"></a> -<span class="sourceLineNo">289</span> final int runs = 10;<a name="line.289"></a> -<span class="sourceLineNo">290</span> loadBalancer.setConf(conf);<a name="line.290"></a> -<span class="sourceLineNo">291</span> for (int[] mockCluster : clusterStateMocks) {<a name="line.291"></a> -<span class="sourceLineNo">292</span> BaseLoadBalancer.Cluster cluster = mockCluster(mockCluster);<a name="line.292"></a> -<span class="sourceLineNo">293</span> loadBalancer.initCosts(cluster);<a name="line.293"></a> -<span class="sourceLineNo">294</span> for (int i = 0; i != runs; ++i) {<a name="line.294"></a> -<span class="sourceLineNo">295</span> final double expectedCost = loadBalancer.computeCost(cluster, Double.MAX_VALUE);<a name="line.295"></a> -<span class="sourceLineNo">296</span> Cluster.Action action = loadBalancer.nextAction(cluster);<a name="line.296"></a> -<span class="sourceLineNo">297</span> cluster.doAction(action);<a name="line.297"></a> -<span class="sourceLineNo">298</span> loadBalancer.updateCostsWithAction(cluster, action);<a name="line.298"></a> -<span class="sourceLineNo">299</span> Cluster.Action undoAction = action.undoAction();<a name="line.299"></a> -<span class="sourceLineNo">300</span> cluster.doAction(undoAction);<a name="line.300"></a> -<span class="sourceLineNo">301</span> loadBalancer.updateCostsWithAction(cluster, undoAction);<a name="line.301"></a> -<span class="sourceLineNo">302</span> final double actualCost = loadBalancer.computeCost(cluster, Double.MAX_VALUE);<a name="line.302"></a> -<span class="sourceLineNo">303</span> assertEquals(expectedCost, actualCost, 0);<a name="line.303"></a> -<span class="sourceLineNo">304</span> }<a name="line.304"></a> -<span class="sourceLineNo">305</span> }<a name="line.305"></a> -<span class="sourceLineNo">306</span> }<a name="line.306"></a> -<span class="sourceLineNo">307</span><a name="line.307"></a> -<span class="sourceLineNo">308</span> @Test<a name="line.308"></a> -<span class="sourceLineNo">309</span> public void testTableSkewCost() {<a name="line.309"></a> -<span class="sourceLineNo">310</span> Configuration conf = HBaseConfiguration.create();<a name="line.310"></a> -<span class="sourceLineNo">311</span> StochasticLoadBalancer.CostFunction<a name="line.311"></a> -<span class="sourceLineNo">312</span> costFunction = new StochasticLoadBalancer.TableSkewCostFunction(conf);<a name="line.312"></a> -<span class="sourceLineNo">313</span> for (int[] mockCluster : clusterStateMocks) {<a name="line.313"></a> -<span class="sourceLineNo">314</span> BaseLoadBalancer.Cluster cluster = mockCluster(mockCluster);<a name="line.314"></a> -<span class="sourceLineNo">315</span> costFunction.init(cluster);<a name="line.315"></a> -<span class="sourceLineNo">316</span> double cost = costFunction.cost();<a name="line.316"></a> -<span class="sourceLineNo">317</span> assertTrue(cost >= 0);<a name="line.317"></a> -<span class="sourceLineNo">318</span> assertTrue(cost <= 1.01);<a name="line.318"></a> -<span class="sourceLineNo">319</span> }<a name="line.319"></a> -<span class="sourceLineNo">320</span> }<a name="line.320"></a> -<span class="sourceLineNo">321</span><a name="line.321"></a> -<span class="sourceLineNo">322</span> @Test<a name="line.322"></a> -<span class="sourceLineNo">323</span> public void testRegionLoadCost() {<a name="line.323"></a> -<span class="sourceLineNo">324</span> List<BalancerRegionLoad> regionLoads = new ArrayList<>();<a name="line.324"></a> -<span class="sourceLineNo">325</span> for (int i = 1; i < 5; i++) {<a name="line.325"></a> -<span class="sourceLineNo">326</span> BalancerRegionLoad regionLoad = mock(BalancerRegionLoad.class);<a name="line.326"></a> -<span class="sourceLineNo">327</span> when(regionLoad.getReadRequestsCount()).thenReturn(new Long(i));<a name="line.327"></a> -<span class="sourceLineNo">328</span> when(regionLoad.getStorefileSizeMB()).thenReturn(i);<a name="line.328"></a> -<span class="sourceLineNo">329</span> regionLoads.add(regionLoad);<a name="line.329"></a> -<span class="sourceLineNo">330</span> }<a name="line.330"></a> -<span class="sourceLineNo">331</span><a name="line.331"></a> -<span class="sourceLineNo">332</span> Configuration conf = HBaseConfiguration.create();<a name="line.332"></a> -<span class="sourceLineNo">333</span> StochasticLoadBalancer.ReadRequestCostFunction readCostFunction =<a name="line.333"></a> -<span class="sourceLineNo">334</span> new StochasticLoadBalancer.ReadRequestCostFunction(conf);<a name="line.334"></a> -<span class="sourceLineNo">335</span> double rateResult = readCostFunction.getRegionLoadCost(regionLoads);<a name="line.335"></a> -<span class="sourceLineNo">336</span> // read requests are treated as a rate so the average rate here is simply 1<a name="line.336"></a> -<span class="sourceLineNo">337</span> assertEquals(1, rateResult, 0.01);<a name="line.337"></a> -<span class="sourceLineNo">338</span><a name="line.338"></a> -<span class="sourceLineNo">339</span> StochasticLoadBalancer.StoreFileCostFunction storeFileCostFunction =<a name="line.339"></a> -<span class="sourceLineNo">340</span> new StochasticLoadBalancer.StoreFileCostFunction(conf);<a name="line.340"></a> -<span class="sourceLineNo">341</span> double result = storeFileCostFunction.getRegionLoadCost(regionLoads);<a name="line.341"></a> -<span class="sourceLineNo">342</span> // storefile size cost is simply an average of it's value over time<a name="line.342"></a> -<span class="sourceLineNo">343</span> assertEquals(2.5, result, 0.01);<a name="line.343"></a> -<span class="sourceLineNo">344</span> }<a name="line.344"></a> +<span class="sourceLineNo">246</span> @Test<a name="line.246"></a> +<span class="sourceLineNo">247</span> public void testCostAfterUndoAction() {<a name="line.247"></a> +<span class="sourceLineNo">248</span> final int runs = 10;<a name="line.248"></a> +<span class="sourceLineNo">249</span> loadBalancer.setConf(conf);<a name="line.249"></a> +<span class="sourceLineNo">250</span> for (int[] mockCluster : clusterStateMocks) {<a name="line.250"></a> +<span class="sourceLineNo">251</span> BaseLoadBalancer.Cluster cluster = mockCluster(mockCluster);<a name="line.251"></a> +<span class="sourceLineNo">252</span> loadBalancer.initCosts(cluster);<a name="line.252"></a> +<span class="sourceLineNo">253</span> for (int i = 0; i != runs; ++i) {<a name="line.253"></a> +<span class="sourceLineNo">254</span> final double expectedCost = loadBalancer.computeCost(cluster, Double.MAX_VALUE);<a name="line.254"></a> +<span class="sourceLineNo">255</span> Cluster.Action action = loadBalancer.nextAction(cluster);<a name="line.255"></a> +<span class="sourceLineNo">256</span> cluster.doAction(action);<a name="line.256"></a> +<span class="sourceLineNo">257</span> loadBalancer.updateCostsWithAction(cluster, action);<a name="line.257"></a> +<span class="sourceLineNo">258</span> Cluster.Action undoAction = action.undoAction();<a name="line.258"></a> +<span class="sourceLineNo">259</span> cluster.doAction(undoAction);<a name="line.259"></a> +<span class="sourceLineNo">260</span> loadBalancer.updateCostsWithAction(cluster, undoAction);<a name="line.260"></a> +<span class="sourceLineNo">261</span> final double actualCost = loadBalancer.computeCost(cluster, Double.MAX_VALUE);<a name="line.261"></a> +<span class="sourceLineNo">262</span> assertEquals(expectedCost, actualCost, 0);<a name="line.262"></a> +<span class="sourceLineNo">263</span> }<a name="line.263"></a> +<span class="sourceLineNo">264</span> }<a name="line.264"></a> +<span class="sourceLineNo">265</span> }<a name="line.265"></a> +<span class="sourceLineNo">266</span><a name="line.266"></a> +<span class="sourceLineNo">267</span> @Test<a name="line.267"></a> +<span class="sourceLineNo">268</span> public void testTableSkewCost() {<a name="line.268"></a> +<span class="sourceLineNo">269</span> Configuration conf = HBaseConfiguration.create();<a name="line.269"></a> +<span class="sourceLineNo">270</span> StochasticLoadBalancer.CostFunction<a name="line.270"></a> +<span class="sourceLineNo">271</span> costFunction = new StochasticLoadBalancer.TableSkewCostFunction(conf);<a name="line.271"></a> +<span class="sourceLineNo">272</span> for (int[] mockCluster : clusterStateMocks) {<a name="line.272"></a> +<span class="sourceLineNo">273</span> BaseLoadBalancer.Cluster cluster = mockCluster(mockCluster);<a name="line.273"></a> +<span class="sourceLineNo">274</span> costFunction.init(cluster);<a name="line.274"></a> +<span class="sourceLineNo">275</span> double cost = costFunction.cost();<a name="line.275"></a> +<span class="sourceLineNo">276</span> assertTrue(cost >= 0);<a name="line.276"></a> +<span class="sourceLineNo">277</span> assertTrue(cost <= 1.01);<a name="line.277"></a> +<span class="sourceLineNo">278</span> }<a name="line.278"></a> +<span class="sourceLineNo">279</span> }<a name="line.279"></a> +<span class="sourceLineNo">280</span><a name="line.280"></a> +<span class="sourceLineNo">281</span> @Test<a name="line.281"></a> +<span class="sourceLineNo">282</span> public void testRegionLoadCost() {<a name="line.282"></a> +<span class="sourceLineNo">283</span> List<BalancerRegionLoad> regionLoads = new ArrayList<>();<a name="line.283"></a> +<span class="sourceLineNo">284</span> for (int i = 1; i < 5; i++) {<a name="line.284"></a> +<span class="sourceLineNo">285</span> BalancerRegionLoad regionLoad = mock(BalancerRegionLoad.class);<a name="line.285"></a> +<span class="sourceLineNo">286</span> when(regionLoad.getReadRequestsCount()).thenReturn(new Long(i));<a name="line.286"></a> +<span class="sourceLineNo">287</span> when(regionLoad.getStorefileSizeMB()).thenReturn(i);<a name="line.287"></a> +<span class="sourceLineNo">288</span> regionLoads.add(regionLoad);<a name="line.288"></a> +<span class="sourceLineNo">289</span> }<a name="line.289"></a> +<span class="sourceLineNo">290</span><a name="line.290"></a> +<span class="sourceLineNo">291</span> Configuration conf = HBaseConfiguration.create();<a name="line.291"></a> +<span class="sourceLineNo">292</span> StochasticLoadBalancer.ReadRequestCostFunction readCostFunction =<a name="line.292"></a> +<span class="sourceLineNo">293</span> new StochasticLoadBalancer.ReadRequestCostFunction(conf);<a name="line.293"></a> +<span class="sourceLineNo">294</span> double rateResult = readCostFunction.getRegionLoadCost(regionLoads);<a name="line.294"></a> +<span class="sourceLineNo">295</span> // read requests are treated as a rate so the average rate here is simply 1<a name="line.295"></a> +<span class="sourceLineNo">296</span> assertEquals(1, rateResult, 0.01);<a name="line.296"></a> +<span class="sourceLineNo">297</span><a name="line.297"></a> +<span class="sourceLineNo">298</span> StochasticLoadBalancer.StoreFileCostFunction storeFileCostFunction =<a name="line.298"></a> +<span class="sourceLineNo">299</span> new StochasticLoadBalancer.StoreFileCostFunction(conf);<a name="line.299"></a> +<span class="sourceLineNo">300</span> double result = storeFileCostFunction.getRegionLoadCost(regionLoads);<a name="line.300"></a> +<span class="sourceLineNo">301</span> // storefile size cost is simply an average of it's value over time<a name="line.301"></a> +<span class="sourceLineNo">302</span> assertEquals(2.5, result, 0.01);<a name="line.302"></a> +<span class="sourceLineNo">303</span> }<a name="line.303"></a> +<span class="sourceLineNo">304</span><a name="line.304"></a> +<span class="sourceLineNo">305</span> @Test<a name="line.305"></a> +<span class="sourceLineNo">306</span> public void testCostFromArray() {<a name="line.306"></a> +<span class="sourceLineNo">307</span> Configuration conf = HBaseConfiguration.create();<a name="line.307"></a> +<span class="sourceLineNo">308</span> StochasticLoadBalancer.CostFromRegionLoadFunction<a name="line.308"></a> +<span class="sourceLineNo">309</span> costFunction = new StochasticLoadBalancer.MemStoreSizeCostFunction(conf);<a name="line.309"></a> +<span class="sourceLineNo">310</span> costFunction.init(mockCluster(new int[]{0, 0, 0, 0, 1}));<a name="line.310"></a> +<span class="sourceLineNo">311</span><a name="line.311"></a> +<span class="sourceLineNo">312</span> double[] statOne = new double[100];<a name="line.312"></a> +<span class="sourceLineNo">313</span> for (int i =0; i < 100; i++) {<a name="line.313"></a> +<span class="sourceLineNo">314</span> statOne[i] = 10;<a name="line.314"></a> +<span class="sourceLineNo">315</span> }<a name="line.315"></a> +<span class="sourceLineNo">316</span> assertEquals(0, costFunction.costFromArray(statOne), 0.01);<a name="line.316"></a> +<span class="sourceLineNo">317</span><a name="line.317"></a> +<span class="sourceLineNo">318</span> double[] statTwo= new double[101];<a name="line.318"></a> +<span class="sourceLineNo">319</span> for (int i =0; i < 100; i++) {<a name="line.319"></a> +<span class="sourceLineNo">320</span> statTwo[i] = 0;<a name="line.320"></a> +<span class="sourceLineNo">321</span> }<a name="line.321"></a> +<span class="sourceLineNo">322</span> statTwo[100] = 100;<a name="line.322"></a> +<span class="sourceLineNo">323</span> assertEquals(1, costFunction.costFromArray(statTwo), 0.01);<a name="line.323"></a> +<span class="sourceLineNo">324</span><a name="line.324"></a> +<span class="sourceLineNo">325</span> double[] statThree = new double[200];<a name="line.325"></a> +<span class="sourceLineNo">326</span> for (int i =0; i < 100; i++) {<a name="line.326"></a> +<span class="sourceLineNo">327</span> statThree[i] = (0);<a name="line.327"></a> +<span class="sourceLineNo">328</span> statThree[i+100] = 100;<a name="line.328"></a> +<span class="sourceLineNo">329</span> }<a name="line.329"></a> +<span class="sourceLineNo">330</span> assertEquals(0.5, costFunction.costFromArray(statThree), 0.01);<a name="line.330"></a> +<span class="sourceLineNo">331</span> }<a name="line.331"></a> +<span class="sourceLineNo">332</span><a name="line.332"></a> +<span class="sourceLineNo">333</span> @Test<a name="line.333"></a> +<span class="sourceLineNo">334</span> public void testLosingRs() throws Exception {<a name="line.334"></a> +<span class="sourceLineNo">335</span> int numNodes = 3;<a name="line.335"></a> +<span class="sourceLineNo">336</span> int numRegions = 20;<a name="line.336"></a> +<span class="sourceLineNo">337</span> int numRegionsPerServer = 3; //all servers except one<a name="line.337"></a> +<span class="sourceLineNo">338</span> int replication = 1;<a name="line.338"></a> +<span class="sourceLineNo">339</span> int numTables = 2;<a name="line.339"></a> +<span class="sourceLineNo">340</span><a name="line.340"></a> +<span class="sourceLineNo">341</span> Map<ServerName, List<RegionInfo>> serverMap =<a name="line.341"></a> +<span class="sourceLineNo">342</span> createServerMap(numNodes, numRegions, numRegionsPerServer, replication, numTables);<a name="line.342"></a> +<span class="sourceLineNo">343</span> List<ServerAndLoad> list = convertToList(serverMap);<a name="line.343"></a> +<span class="sourceLineNo">344</span><a name="line.344"></a> <span class="sourceLineNo">345</span><a name="line.345"></a> -<span class="sourceLineNo">346</span> @Test<a name="line.346"></a> -<span class="sourceLineNo">347</span> public void testCostFromArray() {<a name="line.347"></a> -<span class="sourceLineNo">348</span> Configuration conf = HBaseConfiguration.create();<a name="line.348"></a> -<span class="sourceLineNo">349</span> StochasticLoadBalancer.CostFromRegionLoadFunction<a name="line.349"></a> -<span class="sourceLineNo">350</span> costFunction = new StochasticLoadBalancer.MemStoreSizeCostFunction(conf);<a name="line.350"></a> -<span class="sourceLineNo">351</span> costFunction.init(mockCluster(new int[]{0, 0, 0, 0, 1}));<a name="line.351"></a> -<span class="sourceLineNo">352</span><a name="line.352"></a> -<span class="sourceLineNo">353</span> double[] statOne = new double[100];<a name="line.353"></a> -<span class="sourceLineNo">354</span> for (int i =0; i < 100; i++) {<a name="line.354"></a> -<span class="sourceLineNo">355</span> statOne[i] = 10;<a name="line.355"></a> -<span class="sourceLineNo">356</span> }<a name="line.356"></a> -<span class="sourceLineNo">357</span> assertEquals(0, costFunction.costFromArray(statOne), 0.01);<a name="line.357"></a> -<span class="sourceLineNo">358</span><a name="line.358"></a> -<span class="sourceLineNo">359</span> double[] statTwo= new double[101];<a name="line.359"></a> -<span class="sourceLineNo">360</span> for (int i =0; i < 100; i++) {<a name="line.360"></a> -<span class="sourceLineNo">361</span> statTwo[i] = 0;<a name="line.361"></a> -<span class="sourceLineNo">362</span> }<a name="line.362"></a> -<span class="sourceLineNo">363</span> statTwo[100] = 100;<a name="line.363"></a> -<span class="sourceLineNo">364</span> assertEquals(1, costFunction.costFromArray(statTwo), 0.01);<a name="line.364"></a> -<span class="sourceLineNo">365</span><a name="line.365"></a> -<span class="sourceLineNo">366</span> double[] statThree = new double[200];<a name="line.366"></a> -<span class="sourceLineNo">367</span> for (int i =0; i < 100; i++) {<a name="line.367"></a> -<span class="sourceLineNo">368</span> statThree[i] = (0);<a name="line.368"></a> -<span class="sourceLineNo">369</span> statThree[i+100] = 100;<a name="line.369"></a> -<span class="sourceLineNo">370</span> }<a name="line.370"></a> -<span class="sourceLineNo">371</span> assertEquals(0.5, costFunction.costFromArray(statThree), 0.01);<a name="line.371"></a> -<span class="sourceLineNo">372</span> }<a name="line.372"></a> +<span class="sourceLineNo">346</span> List<RegionPlan> plans = loadBalancer.balanceCluster(serverMap);<a name="line.346"></a> +<span class="sourceLineNo">347</span> assertNotNull(plans);<a name="line.347"></a> +<span class="sourceLineNo">348</span><a name="line.348"></a> +<span class="sourceLineNo">349</span> // Apply the plan to the mock cluster.<a name="line.349"></a> +<span class="sourceLineNo">350</span> List<ServerAndLoad> balancedCluster = reconcile(list, plans, serverMap);<a name="line.350"></a> +<span class="sourceLineNo">351</span><a name="line.351"></a> +<span class="sourceLineNo">352</span> assertClusterAsBalanced(balancedCluster);<a name="line.352"></a> +<span class="sourceLineNo">353</span><a name="line.353"></a> +<span class="sourceLineNo">354</span> ServerName sn = serverMap.keySet().toArray(new ServerName[serverMap.size()])[0];<a name="line.354"></a> +<span class="sourceLineNo">355</span><a name="line.355"></a> +<span class="sourceLineNo">356</span> ServerName deadSn = ServerName.valueOf(sn.getHostname(), sn.getPort(), sn.getStartcode() - 100);<a name="line.356"></a> +<span class="sourceLineNo">357</span><a name="line.357"></a> +<span class="sourceLineNo">358</span> serverMap.put(deadSn, new ArrayList<>(0));<a name="line.358"></a> +<span class="sourceLineNo">359</span><a name="line.359"></a> +<span class="sourceLineNo">360</span> plans = loadBalancer.balanceCluster(serverMap);<a name="line.360"></a> +<span class="sourceLineNo">361</span> assertNull(plans);<a name="line.361"></a> +<span class="sourceLineNo">362</span> }<a name="line.362"></a> +<span class="sourceLineNo">363</span><a name="line.363"></a> +<span class="sourceLineNo">364</span> // This mock allows us to test the LocalityCostFunction<a name="line.364"></a> +<span class="sourceLineNo">365</span> private class MockCluster extends BaseLoadBalancer.Cluster {<a name="line.365"></a> +<span class="sourceLineNo">366</span><a name="line.366"></a> +<span class="sourceLineNo">367</span> private int[][] localities = null; // [region][server] = percent of blocks<a name="line.367"></a> +<span class="sourceLineNo">368</span><a name="line.368"></a> +<span class="sourceLineNo">369</span> public MockCluster(int[][] regions) {<a name="line.369"></a> +<span class="sourceLineNo">370</span><a name="line.370"></a> +<span class="sourceLineNo">371</span> // regions[0] is an array where index = serverIndex an value = number of regions<a name="line.371"></a> +<span class="sourceLineNo">372</span> super(mockClusterServers(regions[0], 1), null, null, null);<a name="line.372"></a> <span class="sourceLineNo">373</span><a name="line.373"></a> -<span class="sourceLineNo">374</span> @Test(timeout = 60000)<a name="line.374"></a> -<span class="sourceLineNo">375</span> public void testLosingRs() throws Exception {<a name="line.375"></a> -<span class="sourceLineNo">376</span> int numNodes = 3;<a name="line.376"></a> -<span class="sourceLineNo">377</span> int numRegions = 20;<a name="line.377"></a> -<span class="sourceLineNo">378</span> int numRegionsPerServer = 3; //all servers except one<a name="line.378"></a> -<span class="sourceLineNo">379</span> int replication = 1;<a name="line.379"></a> -<span class="sourceLineNo">380</span> int numTables = 2;<a name="line.380"></a> -<span class="sourceLineNo">381</span><a name="line.381"></a> -<span class="sourceLineNo">382</span> Map<ServerName, List<RegionInfo>> serverMap =<a name="line.382"></a> -<span class="sourceLineNo">383</span> createServerMap(numNodes, numRegions, numRegionsPerServer, replication, numTables);<a name="line.383"></a> -<span class="sourceLineNo">384</span> List<ServerAndLoad> list = convertToList(serverMap);<a name="line.384"></a> +<span class="sourceLineNo">374</span> localities = new int[regions.length - 1][];<a name="line.374"></a> +<span class="sourceLineNo">375</span> for (int i = 1; i < regions.length; i++) {<a name="line.375"></a> +<span class="sourceLineNo">376</span> int regionIndex = i - 1;<a name="line.376"></a> +<span class="sourceLineNo">377</span> localities[regionIndex] = new int[regions[i].length - 1];<a name="line.377"></a> +<span class="sourceLineNo">378</span> regionIndexToServerIndex[regionIndex] = regions[i][0];<a name="line.378"></a> +<span class="sourceLineNo">379</span> for (int j = 1; j < regions[i].length; j++) {<a name="line.379"></a> +<span class="sourceLineNo">380</span> int serverIndex = j - 1;<a name="line.380"></a> +<span class="sourceLineNo">381</span> localities[regionIndex][serverIndex] = regions[i][j] > 100 ? regions[i][j] % 100 : regions[i][j];<a name="line.381"></a> +<span class="sourceLineNo">382</span> }<a name="line.382"></a> +<span class="sourceLineNo">383</span> }<a name="line.383"></a> +<span class="sourceLineNo">384</span> }<a name="line.384"></a> <span class="sourceLineNo">385</span><a name="line.385"></a> -<span class="sourceLineNo">386</span><a name="line.386"></a> -<span class="sourceLineNo">387</span> List<RegionPlan> plans = loadBalancer.balanceCluster(serverMap);<a name="line.387"></a> -<span class="sourceLineNo">388</span> assertNotNull(plans);<a name="line.388"></a> -<span class="sourceLineNo">389</span><a name="line.389"></a> -<span class="sourceLineNo">390</span> // Apply the plan to the mock cluster.<a name="line.390"></a> -<span class="sourceLineNo">391</span> List<ServerAndLoad> balancedCluster = reconcile(list, plans, serverMap);<a name="line.391"></a> -<span class="sourceLineNo">392</span><a name="line.392"></a> -<span class="sourceLineNo">393</span> assertClusterAsBalanced(balancedCluster);<a name="line.393"></a> -<span class="sourceLineNo">394</span><a name="line.394"></a> -<span class="sourceLineNo">395</span> ServerName sn = serverMap.keySet().toArray(new ServerName[serverMap.size()])[0];<a name="line.395"></a> -<span class="sourceLineNo">396</span><a name="line.396"></a> -<span class="sourceLineNo">397</span> ServerName deadSn = ServerName.valueOf(sn.getHostname(), sn.getPort(), sn.getStartcode() - 100);<a name="line.397"></a> -<span class="sourceLineNo">398</span><a name="line.398"></a> -<span class="sourceLineNo">399</span> serverMap.put(deadSn, new ArrayList<>(0));<a name="line.399"></a> -<span class="sourceLineNo">400</span><a name="line.400"></a> -<span class="sourceLineNo">401</span> plans = loadBalancer.balanceCluster(serverMap);<a name="line.401"></a> -<span class="sourceLineNo">402</span> assertNull(plans);<a name="line.402"></a> -<span class="sourceLineNo">403</span> }<a name="line.403"></a> -<span class="sourceLineNo">404</span><a name="line.404"></a> -<span class="sourceLineNo">405</span> @Test<a name="line.405"></a> -<span class="sourceLineNo">406</span> public void testReplicaCost() {<a name="line.406"></a> -<span class="sourceLineNo">407</span> Configuration conf = HBaseConfiguration.create();<a name="line.407"></a> -<span class="sourceLineNo">408</span> StochasticLoadBalancer.CostFunction<a name="line.408"></a> -<span class="sourceLineNo">409</span> costFunction = new StochasticLoadBalancer.RegionReplicaHostCostFunction(conf);<a name="line.409"></a> -<span class="sourceLineNo">410</span> for (int[] mockCluster : clusterStateMocks) {<a name="line.410"></a> -<span class="sourceLineNo">411</span> BaseLoadBalancer.Cluster cluster = mockCluster(mockCluster);<a name="line.411"></a> -<span class="sourceLineNo">412</span> costFunction.init(cluster);<a name="line.412"></a> -<span class="sourceLineNo">413</span> double cost = costFunction.cost();<a name="line.413"></a> -<span class="sourceLineNo">414</span> assertTrue(cost >= 0);<a name="line.414"></a> -<span class="sourceLineNo">415</span> assertTrue(cost <= 1.01);<a name="line.415"></a> -<span class="sourceLineNo">416</span> }<a name="line.416"></a> -<span class="sourceLineNo">417</span> }<a name="line.417"></a> -<span class="sourceLineNo">418</span><a name="line.418"></a> -<span class="sourceLineNo">419</span> @Test<a name="line.419"></a> -<span class="sourceLineNo">420</span> public void testReplicaCostForReplicas() {<a name="line.420"></a> -<span class="sourceLineNo">421</span> Configuration conf = HBaseConfiguration.create();<a name="line.421"></a> -<span class="sourceLineNo">422</span> StochasticLoadBalancer.CostFunction<a name="line.422"></a> -<span class="sourceLineNo">423</span> costFunction = new StochasticLoadBalancer.RegionReplicaHostCostFunction(conf);<a name="line.423"></a> -<span class="sourceLineNo">424</span><a name="line.424"></a> -<span class="sourceLineNo">425</span> int [] servers = new int[] {3,3,3,3,3};<a name="line.425"></a> -<span class="sourceLineNo">426</span> TreeMap<ServerName, List<RegionInfo>> clusterState = mockClusterServers(servers);<a name="line.426"></a> -<span class="sourceLineNo">427</span><a name="line.427"></a> -<span class="sourceLineNo">428</span> BaseLoadBalancer.Cluster cluster;<a name="line.428"></a> -<span class="sourceLineNo">429</span><a name="line.429"></a> -<span class="sourceLineNo">430</span> cluster = new BaseLoadBalancer.Cluster(clusterState, null, null, null);<a name="line.430"></a> -<span class="sourceLineNo">431</span> costFunction.init(cluster);<a name="line.431"></a> -<span class="sourceLineNo">432</span> double costWithoutReplicas = costFunction.cost();<a name="line.432"></a> -<span class="sourceLineNo">433</span> assertEquals(0, costWithoutReplicas, 0);<a name="line.433"></a> -<span class="sourceLineNo">434</span><a name="line.434"></a> -<span class="sourceLineNo">435</span> // replicate the region from first server to the last server<a name="line.435"></a> -<span class="sourceLineNo">436</span> RegionInfo replica1 = RegionReplicaUtil.getRegionInfoForReplica(<a name="line.436"></a> -<span class="sourceLineNo">437</span> clusterState.firstEntry().getValue().get(0),1);<a name="line.437"></a> -<span class="sourceLineNo">438</span> clusterState.lastEntry().getValue().add(replica1);<a name="line.438"></a> -<span class="sourceLineNo">439</span><a name="line.439"></a> -<span class="sourceLineNo">440</span> cluster = new BaseLoadBalancer.Cluster(clusterState, null, null, null);<a name="line.440"></a> -<span class="sourceLineNo">441</span> costFunction.init(cluster);<a name="line.441"></a> -<span class="sourceLineNo">442</span> double costWith1ReplicaDifferentServer = costFunction.cost();<a 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name="line.452"></a> -<span class="sourceLineNo">453</span><a name="line.453"></a> -<span class="sourceLineNo">454</span> assertTrue(costWith1ReplicaDifferentServer < costWith1ReplicaSameServer);<a name="line.454"></a> -<span class="sourceLineNo">455</span><a name="line.455"></a> -<span class="sourceLineNo">456</span> // test with replication = 4 for following:<a name="line.456"></a> -<span class="sourceLineNo">457</span><a name="line.457"></a> -<span class="sourceLineNo">458</span> RegionInfo replica3;<a name="line.458"></a> -<span class="sourceLineNo">459</span> Iterator<Entry<ServerName, List<RegionInfo>>> it;<a name="line.459"></a> -<span class="sourceLineNo">460</span> Entry<ServerName, List<RegionInfo>> entry;<a name="line.460"></a> -<span class="sourceLineNo">461</span><a name="line.461"></a> -<span class="sourceLineNo">462</span> clusterState = mockClusterServers(servers);<a name="line.462"></a> -<span class="sourceLineNo">463</span> it = clusterState.entrySet().iterator();<a name="line.463"></a> -<span class="sourceLineNo">464</span> entry = it.next(); //first server<a name="line.464"></a> -<span class="sourceLineNo">465</span> RegionInfo hri = entry.getValue().get(0);<a name="line.465"></a> -<span class="sourceLineNo">466</span> replica1 = RegionReplicaUtil.getRegionInfoForReplica(hri, 1);<a name="line.466"></a> -<span class="sourceLineNo">467</span> replica2 = RegionReplicaUtil.getRegionInfoForReplica(hri, 2);<a name="line.467"></a> -<span class="sourceLineNo">468</span> replica3 = RegionReplicaUtil.getRegionInfoForReplica(hri, 3);<a name="line.468"></a> -<span class="sourceLineNo">469</span> entry.getValue().add(replica1);<a name="line.469"></a> -<span class="sourceLineNo">470</span> entry.getValue().add(replica2);<a name="line.470"></a> -<span class="sourceLineNo">471</span> it.next().getValue().add(replica3); //2nd server<a name="line.471"></a> -<span class="sourceLineNo">472</span><a name="line.472"></a> -<span class="sourceLineNo">473</span> cluster = new BaseLoadBalancer.Cluster(clusterState, null, null, null);<a name="line.473"></a> -<span class="sourceLineNo">474</span> costFunction.init(cluster);<a name="line.474"></a> -<span class="sourceLineNo">475</span> double costWith3ReplicasSameServer = costFunction.cost();<a name="line.475"></a> -<span class="sourceLineNo">476</span><a name="line.476"></a> -<span class="sourceLineNo">477</span> clusterState = mockClusterServers(servers);<a name="line.477"></a> -<span class="sourceLineNo">478</span> hri = clusterState.firstEntry().getValue().get(0);<a name="line.478"></a> -<span class="sourceLineNo">479</span> replica1 = RegionReplicaUtil.getRegionInfoForReplica(hri, 1);<a name="line.479"></a> -<span class="sourceLineNo">480</span> replica2 = RegionReplicaUtil.getRegionInfoForReplica(hri, 2);<a name="line.480"></a> -<span class="sourceLineNo">481</span> replica3 = RegionReplicaUtil.getRegionInfoForReplica(hri, 3);<a name="line.481"></a> -<span class="sourceLineNo">482</span><a name="line.482"></a> -<span class="sourceLineNo">483</span> clusterState.firstEntry().getValue().add(replica1);<a name="line.483"></a> -<span class="sourceLineNo">484</span> clusterState.lastEntry().getValue().add(replica2);<a name="line.484"></a> -<span class="sourceLineNo">485</span> clusterState.lastEntry().getValue().add(replica3);<a name="line.485"></a> -<span class="sourceLineNo">486</span><a name="line.486"></a> -<span class="sourceLineNo">487</span> cluster = new BaseLoadBalancer.Cluster(clusterState, null, null, null);<a name="line.487"></a> -<span class="sourceLineNo">488</span> costFunction.init(cluster);<a name="line.488"></a> -<span class="sourceLineNo">489</span> double costWith2ReplicasOnTwoServers = costFunction.cost();<a name="line.489"></a> -<span class="sourceLineNo">490</span><a name="line.490"></a> -<span class="sourceLineNo">491</span> assertTrue(costWith2ReplicasOnTwoServers < costWith3ReplicasSameServer);<a name="line.491"></a> -<span class="sourceLineNo">492</span> }<a name="line.492"></a> -<span class="sourceLineNo">493</span><a name="line.493"></a> -<span class="sourceLineNo">494</span> @Test<a name="line.494"></a> -<span class="sourceLineNo">495</span> public void testNeedsBalanceForColocatedReplicas() {<a name="line.495"></a> -<span class="sourceLineNo">496</span> // check for the case where there are two hosts and with one rack, and where<a name="line.496"></a> -<span class="sourceLineNo">497</span> // both the replicas are hosted on the same server<a name="line.497"></a> -<span class="sourceLineNo">498</span> List<RegionInfo> regions = randomRegions(1);<a name="line.498"></a> -<span class="sourceLineNo">499</span> ServerName s1 = ServerName.valueOf("host1", 1000, 11111);<a name="line.499"></a> -<span class="sourceLineNo">500</span> ServerName s2 = ServerName.valueOf("host11", 1000, 11111);<a name="line.500"></a> -<span class="sourceLineNo">501</span> Map<ServerName, List<RegionInfo>> map = new HashMap<>();<a name="line.501"></a> -<span class="sourceLineNo">502</span> map.put(s1, regions);<a name="line.502"></a> -<span class="sourceLineNo">503</span> regions.add(RegionReplicaUtil.getRegionInfoForReplica(regions.get(0), 1));<a name="line.503"></a> -<span class="sourceLineNo">504</span> // until the step above s1 holds two replicas of a region<a name="line.504"></a> -<span class="sourceLineNo">505</span> regions = randomRegions(1);<a name="line.505"></a> -<span class="sourceLineNo">506</span> map.put(s2, regions);<a name="line.506"></a> -<span class="sourceLineNo">507</span> assertTrue(loadBalancer.needsBalance(new Cluster(map, null, null, null)));<a name="line.507"></a> -<span class="sourceLineNo">508</span> // check for the case where there are two hosts on the same rack and there are two racks<a name="line.508"></a> -<span class="sourceLineNo">509</span> // and both the replicas are on the same rack<a name="line.509"></a> -<span class="sourceLineNo">510</span> map.clear();<a name="line.510"></a> -<span class="sourceLineNo">511</span> regions = randomRegions(1);<a name="line.511"></a> -<span class="sourceLineNo">512</span> List<RegionInfo> regionsOnS2 = new ArrayList<>(1);<a name="line.512"></a> -<span class="sourceLineNo">513</span> regionsOnS2.add(RegionReplicaUtil.getRegionInfoForReplica(regions.get(0), 1));<a name="line.513"></a> -<span class="sourceLineNo">514</span> map.put(s1, regions);<a name="line.514"></a> -<span class="sourceLineNo">515</span> map.put(s2, regionsOnS2);<a name="line.515"></a> -<span class="sourceLineNo">516</span> // add another server so that the cluster has some host on another rack<a name="line.516"></a> -<span class="sourceLineNo">517</span> map.put(ServerName.valueOf("host2", 1000, 11111), randomRegions(1));<a name="line.517"></a> -<span class="sourceLineNo">518</span> assertTrue(loadBalancer.needsBalance(new Cluster(map, null, null,<a name="line.518"></a> -<span class="sourceLineNo">519</span> new 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class="sourceLineNo">530</span> }<a name="line.530"></a> -<span class="sourceLineNo">531</span><a name="line.531"></a> -<span class="sourceLineNo">532</span> @Test (timeout = 60000)<a name="line.532"></a> -<span class="sourceLineNo">533</span> public void testSmallCluster2() {<a name="line.533"></a> -<span class="sourceLineNo">534</span> int numNodes = 20;<a name="line.534"></a> -<span class="sourceLineNo">535</span> int numRegions = 2000;<a name="line.535"></a> -<span class="sourceLineNo">536</span> int numRegionsPerServer = 40; //all servers except one<a name="line.536"></a> -<span class="sourceLineNo">537</span> int replication = 1;<a name="line.537"></a> -<span class="sourceLineNo">538</span> int numTables = 10;<a name="line.538"></a> -<span class="sourceLineNo">539</span> testWithCluster(numNodes, numRegions, numRegionsPerServer, replication, numTables, true, true);<a name="line.539"></a> -<span class="sourceLineNo">540</span> }<a name="line.540"></a> -<span class="sourceLineNo">541</span><a name="line.541"></a> -<span class="sourceLineNo">542</span> @Test (timeout = 60000)<a name="line.542"></a> -<span class="sourceLineNo">543</span> public void testSmallCluster3() {<a name="line.543"></a> -<span class="sourceLineNo">544</span> int numNodes = 20;<a name="line.544"></a> -<span class="sourceLineNo">545</span> int numRegions = 2000;<a name="line.545"></a> -<span class="sourceLineNo">546</span> int numRegionsPerServer = 1; // all servers except one<a name="line.546"></a> -<span class="sourceLineNo">547</span> int replication = 1;<a name="line.547"></a> -<span class="sourceLineNo">548</span> int numTables = 10;<a name="line.548"></a> -<span class="sourceLineNo">549</span> /* fails because of max moves */<a name="line.549"></a> -<span class="sourceLineNo">550</span> testWithCluster(numNodes, numRegions, numRegionsPerServer, replication, numTables, false, false);<a name="line.550"></a> -<span class="sourceLineNo">551</span> }<a 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<TRUNCATED>
