http://git-wip-us.apache.org/repos/asf/hbase-site/blob/8b1eaec1/devapidocs/src-html/org/apache/hadoop/hbase/util/FSTableDescriptors.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/util/FSTableDescriptors.html b/devapidocs/src-html/org/apache/hadoop/hbase/util/FSTableDescriptors.html index 7226d18..f065ddb 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/util/FSTableDescriptors.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/util/FSTableDescriptors.html @@ -45,733 +45,736 @@ <span class="sourceLineNo">037</span>import org.apache.hadoop.fs.FileSystem;<a name="line.37"></a> <span class="sourceLineNo">038</span>import org.apache.hadoop.fs.Path;<a name="line.38"></a> <span class="sourceLineNo">039</span>import org.apache.hadoop.fs.PathFilter;<a name="line.39"></a> -<span class="sourceLineNo">040</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.40"></a> -<span class="sourceLineNo">041</span>import org.slf4j.Logger;<a name="line.41"></a> -<span class="sourceLineNo">042</span>import org.slf4j.LoggerFactory;<a name="line.42"></a> -<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.client.ColumnFamilyDescriptorBuilder;<a name="line.43"></a> -<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.client.TableDescriptor;<a name="line.44"></a> -<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.client.TableDescriptorBuilder;<a name="line.45"></a> -<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.Coprocessor;<a name="line.46"></a> -<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.exceptions.DeserializationException;<a name="line.47"></a> -<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.HConstants;<a name="line.48"></a> -<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.regionserver.BloomType;<a name="line.49"></a> -<span class="sourceLineNo">050</span>import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;<a name="line.50"></a> -<span class="sourceLineNo">051</span>import org.apache.hbase.thirdparty.com.google.common.primitives.Ints;<a name="line.51"></a> -<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.TableDescriptors;<a name="line.52"></a> -<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.TableInfoMissingException;<a name="line.53"></a> -<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.TableName;<a name="line.54"></a> -<span class="sourceLineNo">055</span><a name="line.55"></a> -<span class="sourceLineNo">056</span>/**<a name="line.56"></a> -<span class="sourceLineNo">057</span> * Implementation of {@link TableDescriptors} that reads descriptors from the<a name="line.57"></a> -<span class="sourceLineNo">058</span> * passed filesystem. It expects descriptors to be in a file in the<a name="line.58"></a> -<span class="sourceLineNo">059</span> * {@link #TABLEINFO_DIR} subdir of the table's directory in FS. Can be read-only<a name="line.59"></a> -<span class="sourceLineNo">060</span> * -- i.e. does not modify the filesystem or can be read and write.<a name="line.60"></a> -<span class="sourceLineNo">061</span> *<a name="line.61"></a> -<span class="sourceLineNo">062</span> * <p>Also has utility for keeping up the table descriptors tableinfo file.<a name="line.62"></a> -<span class="sourceLineNo">063</span> * The table schema file is kept in the {@link #TABLEINFO_DIR} subdir<a name="line.63"></a> -<span class="sourceLineNo">064</span> * of the table directory in the filesystem.<a name="line.64"></a> -<span class="sourceLineNo">065</span> * It has a {@link #TABLEINFO_FILE_PREFIX} and then a suffix that is the<a name="line.65"></a> -<span class="sourceLineNo">066</span> * edit sequenceid: e.g. <code>.tableinfo.0000000003</code>. This sequenceid<a name="line.66"></a> -<span class="sourceLineNo">067</span> * is always increasing. It starts at zero. The table schema file with the<a name="line.67"></a> -<span class="sourceLineNo">068</span> * highest sequenceid has the most recent schema edit. Usually there is one file<a name="line.68"></a> -<span class="sourceLineNo">069</span> * only, the most recent but there may be short periods where there are more<a name="line.69"></a> -<span class="sourceLineNo">070</span> * than one file. Old files are eventually cleaned. Presumption is that there<a name="line.70"></a> -<span class="sourceLineNo">071</span> * will not be lots of concurrent clients making table schema edits. If so,<a name="line.71"></a> -<span class="sourceLineNo">072</span> * the below needs a bit of a reworking and perhaps some supporting api in hdfs.<a name="line.72"></a> -<span class="sourceLineNo">073</span> */<a name="line.73"></a> -<span class="sourceLineNo">074</span>@InterfaceAudience.Private<a name="line.74"></a> -<span class="sourceLineNo">075</span>public class FSTableDescriptors implements TableDescriptors {<a name="line.75"></a> -<span class="sourceLineNo">076</span> private static final Logger LOG = LoggerFactory.getLogger(FSTableDescriptors.class);<a name="line.76"></a> -<span class="sourceLineNo">077</span> private final FileSystem fs;<a name="line.77"></a> -<span class="sourceLineNo">078</span> private final Path rootdir;<a name="line.78"></a> -<span class="sourceLineNo">079</span> private final boolean fsreadonly;<a name="line.79"></a> -<span class="sourceLineNo">080</span> private volatile boolean usecache;<a name="line.80"></a> -<span class="sourceLineNo">081</span> private volatile boolean fsvisited;<a name="line.81"></a> -<span class="sourceLineNo">082</span><a name="line.82"></a> -<span class="sourceLineNo">083</span> @VisibleForTesting<a name="line.83"></a> -<span class="sourceLineNo">084</span> long cachehits = 0;<a name="line.84"></a> +<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.client.CoprocessorDescriptorBuilder;<a name="line.40"></a> +<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.coprocessor.MultiRowMutationEndpoint;<a name="line.41"></a> +<span class="sourceLineNo">042</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.42"></a> +<span class="sourceLineNo">043</span>import org.slf4j.Logger;<a name="line.43"></a> +<span class="sourceLineNo">044</span>import org.slf4j.LoggerFactory;<a name="line.44"></a> +<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.client.ColumnFamilyDescriptorBuilder;<a name="line.45"></a> +<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.client.TableDescriptor;<a name="line.46"></a> +<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.client.TableDescriptorBuilder;<a name="line.47"></a> +<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.Coprocessor;<a name="line.48"></a> +<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.exceptions.DeserializationException;<a name="line.49"></a> +<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.HConstants;<a name="line.50"></a> +<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.regionserver.BloomType;<a name="line.51"></a> +<span class="sourceLineNo">052</span>import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;<a name="line.52"></a> +<span class="sourceLineNo">053</span>import org.apache.hbase.thirdparty.com.google.common.primitives.Ints;<a name="line.53"></a> +<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.TableDescriptors;<a name="line.54"></a> +<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.TableInfoMissingException;<a name="line.55"></a> +<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.TableName;<a name="line.56"></a> +<span class="sourceLineNo">057</span><a name="line.57"></a> +<span class="sourceLineNo">058</span>/**<a name="line.58"></a> +<span class="sourceLineNo">059</span> * Implementation of {@link TableDescriptors} that reads descriptors from the<a name="line.59"></a> +<span class="sourceLineNo">060</span> * passed filesystem. It expects descriptors to be in a file in the<a name="line.60"></a> +<span class="sourceLineNo">061</span> * {@link #TABLEINFO_DIR} subdir of the table's directory in FS. Can be read-only<a name="line.61"></a> +<span class="sourceLineNo">062</span> * -- i.e. does not modify the filesystem or can be read and write.<a name="line.62"></a> +<span class="sourceLineNo">063</span> *<a name="line.63"></a> +<span class="sourceLineNo">064</span> * <p>Also has utility for keeping up the table descriptors tableinfo file.<a name="line.64"></a> +<span class="sourceLineNo">065</span> * The table schema file is kept in the {@link #TABLEINFO_DIR} subdir<a name="line.65"></a> +<span class="sourceLineNo">066</span> * of the table directory in the filesystem.<a name="line.66"></a> +<span class="sourceLineNo">067</span> * It has a {@link #TABLEINFO_FILE_PREFIX} and then a suffix that is the<a name="line.67"></a> +<span class="sourceLineNo">068</span> * edit sequenceid: e.g. <code>.tableinfo.0000000003</code>. This sequenceid<a name="line.68"></a> +<span class="sourceLineNo">069</span> * is always increasing. It starts at zero. The table schema file with the<a name="line.69"></a> +<span class="sourceLineNo">070</span> * highest sequenceid has the most recent schema edit. Usually there is one file<a name="line.70"></a> +<span class="sourceLineNo">071</span> * only, the most recent but there may be short periods where there are more<a name="line.71"></a> +<span class="sourceLineNo">072</span> * than one file. Old files are eventually cleaned. Presumption is that there<a name="line.72"></a> +<span class="sourceLineNo">073</span> * will not be lots of concurrent clients making table schema edits. If so,<a name="line.73"></a> +<span class="sourceLineNo">074</span> * the below needs a bit of a reworking and perhaps some supporting api in hdfs.<a name="line.74"></a> +<span class="sourceLineNo">075</span> */<a name="line.75"></a> +<span class="sourceLineNo">076</span>@InterfaceAudience.Private<a name="line.76"></a> +<span class="sourceLineNo">077</span>public class FSTableDescriptors implements TableDescriptors {<a name="line.77"></a> +<span class="sourceLineNo">078</span> private static final Logger LOG = LoggerFactory.getLogger(FSTableDescriptors.class);<a name="line.78"></a> +<span class="sourceLineNo">079</span> private final FileSystem fs;<a name="line.79"></a> +<span class="sourceLineNo">080</span> private final Path rootdir;<a name="line.80"></a> +<span class="sourceLineNo">081</span> private final boolean fsreadonly;<a name="line.81"></a> +<span class="sourceLineNo">082</span> private volatile boolean usecache;<a name="line.82"></a> +<span class="sourceLineNo">083</span> private volatile boolean fsvisited;<a name="line.83"></a> +<span class="sourceLineNo">084</span><a name="line.84"></a> <span class="sourceLineNo">085</span> @VisibleForTesting<a name="line.85"></a> -<span class="sourceLineNo">086</span> long invocations = 0;<a name="line.86"></a> -<span class="sourceLineNo">087</span><a name="line.87"></a> -<span class="sourceLineNo">088</span> /**<a name="line.88"></a> -<span class="sourceLineNo">089</span> * The file name prefix used to store HTD in HDFS<a name="line.89"></a> -<span class="sourceLineNo">090</span> */<a name="line.90"></a> -<span class="sourceLineNo">091</span> public static final String TABLEINFO_FILE_PREFIX = ".tableinfo";<a name="line.91"></a> -<span class="sourceLineNo">092</span> public static final String TABLEINFO_DIR = ".tabledesc";<a name="line.92"></a> -<span class="sourceLineNo">093</span> public static final String TMP_DIR = ".tmp";<a name="line.93"></a> -<span class="sourceLineNo">094</span><a name="line.94"></a> -<span class="sourceLineNo">095</span> // This cache does not age out the old stuff. Thinking is that the amount<a name="line.95"></a> -<span class="sourceLineNo">096</span> // of data we keep up in here is so small, no need to do occasional purge.<a name="line.96"></a> -<span class="sourceLineNo">097</span> // TODO.<a name="line.97"></a> -<span class="sourceLineNo">098</span> private final Map<TableName, TableDescriptor> cache = new ConcurrentHashMap<>();<a name="line.98"></a> -<span class="sourceLineNo">099</span><a name="line.99"></a> -<span class="sourceLineNo">100</span> /**<a name="line.100"></a> -<span class="sourceLineNo">101</span> * Table descriptor for <code>hbase:meta</code> catalog table<a name="line.101"></a> -<span class="sourceLineNo">102</span> */<a name="line.102"></a> -<span class="sourceLineNo">103</span> private final TableDescriptor metaTableDescriptor;<a name="line.103"></a> -<span class="sourceLineNo">104</span><a name="line.104"></a> -<span class="sourceLineNo">105</span> /**<a name="line.105"></a> -<span class="sourceLineNo">106</span> * Construct a FSTableDescriptors instance using the hbase root dir of the given<a name="line.106"></a> -<span class="sourceLineNo">107</span> * conf and the filesystem where that root dir lives.<a name="line.107"></a> -<span class="sourceLineNo">108</span> * This instance can do write operations (is not read only).<a name="line.108"></a> -<span class="sourceLineNo">109</span> */<a name="line.109"></a> -<span class="sourceLineNo">110</span> public FSTableDescriptors(final Configuration conf) throws IOException {<a name="line.110"></a> -<span class="sourceLineNo">111</span> this(conf, FSUtils.getCurrentFileSystem(conf), FSUtils.getRootDir(conf));<a name="line.111"></a> -<span class="sourceLineNo">112</span> }<a name="line.112"></a> -<span class="sourceLineNo">113</span><a name="line.113"></a> -<span class="sourceLineNo">114</span> public FSTableDescriptors(final Configuration conf, final FileSystem fs, final Path rootdir)<a name="line.114"></a> -<span class="sourceLineNo">115</span> throws IOException {<a name="line.115"></a> -<span class="sourceLineNo">116</span> this(conf, fs, rootdir, false, true);<a name="line.116"></a> -<span class="sourceLineNo">117</span> }<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> * @param fsreadonly True if we are read-only when it comes to filesystem<a name="line.120"></a> -<span class="sourceLineNo">121</span> * operations; i.e. on remove, we do not do delete in fs.<a name="line.121"></a> -<span class="sourceLineNo">122</span> */<a name="line.122"></a> -<span class="sourceLineNo">123</span> public FSTableDescriptors(final Configuration conf, final FileSystem fs,<a name="line.123"></a> -<span class="sourceLineNo">124</span> final Path rootdir, final boolean fsreadonly, final boolean usecache) throws IOException {<a name="line.124"></a> -<span class="sourceLineNo">125</span> this(conf, fs, rootdir, fsreadonly, usecache, null);<a name="line.125"></a> -<span class="sourceLineNo">126</span> }<a name="line.126"></a> -<span class="sourceLineNo">127</span><a name="line.127"></a> -<span class="sourceLineNo">128</span> /**<a name="line.128"></a> -<span class="sourceLineNo">129</span> * @param fsreadonly True if we are read-only when it comes to filesystem<a name="line.129"></a> -<span class="sourceLineNo">130</span> * operations; i.e. on remove, we do not do delete in fs.<a name="line.130"></a> -<span class="sourceLineNo">131</span> * @param metaObserver Used by HMaster. It need to modify the META_REPLICAS_NUM for meta table descriptor.<a name="line.131"></a> -<span class="sourceLineNo">132</span> * see HMaster#finishActiveMasterInitialization<a name="line.132"></a> -<span class="sourceLineNo">133</span> * TODO: This is a workaround. Should remove this ugly code...<a name="line.133"></a> -<span class="sourceLineNo">134</span> */<a name="line.134"></a> -<span class="sourceLineNo">135</span> public FSTableDescriptors(final Configuration conf, final FileSystem fs,<a name="line.135"></a> -<span class="sourceLineNo">136</span> final Path rootdir, final boolean fsreadonly, final boolean usecache,<a name="line.136"></a> -<span class="sourceLineNo">137</span> Function<TableDescriptorBuilder, TableDescriptorBuilder> metaObserver) throws IOException {<a name="line.137"></a> -<span class="sourceLineNo">138</span> this.fs = fs;<a name="line.138"></a> -<span class="sourceLineNo">139</span> this.rootdir = rootdir;<a name="line.139"></a> -<span class="sourceLineNo">140</span> this.fsreadonly = fsreadonly;<a name="line.140"></a> -<span class="sourceLineNo">141</span> this.usecache = usecache;<a name="line.141"></a> -<span class="sourceLineNo">142</span> this.metaTableDescriptor = metaObserver == null ? createMetaTableDescriptor(conf)<a name="line.142"></a> -<span class="sourceLineNo">143</span> : metaObserver.apply(createMetaTableDescriptorBuilder(conf)).build();<a name="line.143"></a> -<span class="sourceLineNo">144</span> }<a name="line.144"></a> -<span class="sourceLineNo">145</span><a name="line.145"></a> -<span class="sourceLineNo">146</span> @VisibleForTesting<a name="line.146"></a> -<span class="sourceLineNo">147</span> public static TableDescriptorBuilder createMetaTableDescriptorBuilder(final Configuration conf) throws IOException {<a name="line.147"></a> -<span class="sourceLineNo">148</span> // TODO We used to set CacheDataInL1 for META table. When we have BucketCache in file mode, now<a name="line.148"></a> -<span class="sourceLineNo">149</span> // the META table data goes to File mode BC only. Test how that affect the system. If too much,<a name="line.149"></a> -<span class="sourceLineNo">150</span> // we have to rethink about adding back the setCacheDataInL1 for META table CFs.<a name="line.150"></a> -<span class="sourceLineNo">151</span> return TableDescriptorBuilder.newBuilder(TableName.META_TABLE_NAME)<a name="line.151"></a> -<span class="sourceLineNo">152</span> .addColumnFamily(ColumnFamilyDescriptorBuilder.newBuilder(HConstants.CATALOG_FAMILY)<a name="line.152"></a> -<span class="sourceLineNo">153</span> .setMaxVersions(conf.getInt(HConstants.HBASE_META_VERSIONS,<a name="line.153"></a> -<span class="sourceLineNo">154</span> HConstants.DEFAULT_HBASE_META_VERSIONS))<a name="line.154"></a> -<span class="sourceLineNo">155</span> .setInMemory(true)<a name="line.155"></a> -<span class="sourceLineNo">156</span> .setBlocksize(conf.getInt(HConstants.HBASE_META_BLOCK_SIZE,<a name="line.156"></a> -<span class="sourceLineNo">157</span> HConstants.DEFAULT_HBASE_META_BLOCK_SIZE))<a name="line.157"></a> -<span class="sourceLineNo">158</span> .setScope(HConstants.REPLICATION_SCOPE_LOCAL)<a name="line.158"></a> -<span class="sourceLineNo">159</span> // Disable blooms for meta. Needs work. Seems to mess w/ getClosestOrBefore.<a name="line.159"></a> -<span class="sourceLineNo">160</span> .setBloomFilterType(BloomType.NONE)<a name="line.160"></a> -<span class="sourceLineNo">161</span> .build())<a name="line.161"></a> -<span class="sourceLineNo">162</span> .addColumnFamily(ColumnFamilyDescriptorBuilder.newBuilder(HConstants.TABLE_FAMILY)<a name="line.162"></a> -<span class="sourceLineNo">163</span> .setMaxVersions(conf.getInt(HConstants.HBASE_META_VERSIONS,<a name="line.163"></a> -<span class="sourceLineNo">164</span> HConstants.DEFAULT_HBASE_META_VERSIONS))<a name="line.164"></a> -<span class="sourceLineNo">165</span> .setInMemory(true)<a name="line.165"></a> -<span class="sourceLineNo">166</span> .setBlocksize(8 * 1024)<a name="line.166"></a> -<span class="sourceLineNo">167</span> .setScope(HConstants.REPLICATION_SCOPE_LOCAL)<a name="line.167"></a> -<span class="sourceLineNo">168</span> // Disable blooms for meta. Needs work. Seems to mess w/ getClosestOrBefore.<a name="line.168"></a> -<span class="sourceLineNo">169</span> .setBloomFilterType(BloomType.NONE)<a name="line.169"></a> -<span class="sourceLineNo">170</span> .build())<a name="line.170"></a> -<span class="sourceLineNo">171</span> .addColumnFamily(ColumnFamilyDescriptorBuilder<a name="line.171"></a> -<span class="sourceLineNo">172</span> .newBuilder(HConstants.REPLICATION_BARRIER_FAMILY)<a name="line.172"></a> -<span class="sourceLineNo">173</span> .setMaxVersions(HConstants.ALL_VERSIONS)<a name="line.173"></a> -<span class="sourceLineNo">174</span> .setInMemory(true)<a name="line.174"></a> -<span class="sourceLineNo">175</span> .setScope(HConstants.REPLICATION_SCOPE_LOCAL)<a name="line.175"></a> -<span class="sourceLineNo">176</span> // Disable blooms for meta. Needs work. Seems to mess w/ getClosestOrBefore.<a name="line.176"></a> -<span class="sourceLineNo">177</span> .setBloomFilterType(BloomType.NONE)<a name="line.177"></a> -<span class="sourceLineNo">178</span> .build())<a name="line.178"></a> -<span class="sourceLineNo">179</span> .addCoprocessor("org.apache.hadoop.hbase.coprocessor.MultiRowMutationEndpoint",<a name="line.179"></a> -<span class="sourceLineNo">180</span> null, Coprocessor.PRIORITY_SYSTEM, null);<a name="line.180"></a> -<span class="sourceLineNo">181</span> }<a name="line.181"></a> -<span class="sourceLineNo">182</span><a name="line.182"></a> -<span class="sourceLineNo">183</span> @VisibleForTesting<a name="line.183"></a> -<span class="sourceLineNo">184</span> public static TableDescriptor createMetaTableDescriptor(final Configuration conf)<a name="line.184"></a> -<span class="sourceLineNo">185</span> throws IOException {<a name="line.185"></a> -<span class="sourceLineNo">186</span> return createMetaTableDescriptorBuilder(conf).build();<a name="line.186"></a> -<span class="sourceLineNo">187</span> }<a name="line.187"></a> -<span class="sourceLineNo">188</span><a name="line.188"></a> -<span class="sourceLineNo">189</span> @Override<a name="line.189"></a> -<span class="sourceLineNo">190</span> public void setCacheOn() throws IOException {<a name="line.190"></a> -<span class="sourceLineNo">191</span> this.cache.clear();<a name="line.191"></a> -<span class="sourceLineNo">192</span> this.usecache = true;<a name="line.192"></a> -<span class="sourceLineNo">193</span> }<a name="line.193"></a> -<span class="sourceLineNo">194</span><a name="line.194"></a> -<span class="sourceLineNo">195</span> @Override<a name="line.195"></a> -<span class="sourceLineNo">196</span> public void setCacheOff() throws IOException {<a name="line.196"></a> -<span class="sourceLineNo">197</span> this.usecache = false;<a name="line.197"></a> -<span class="sourceLineNo">198</span> this.cache.clear();<a name="line.198"></a> -<span class="sourceLineNo">199</span> }<a name="line.199"></a> -<span class="sourceLineNo">200</span><a name="line.200"></a> -<span class="sourceLineNo">201</span> @VisibleForTesting<a name="line.201"></a> -<span class="sourceLineNo">202</span> public boolean isUsecache() {<a name="line.202"></a> -<span class="sourceLineNo">203</span> return this.usecache;<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> /**<a name="line.206"></a> -<span class="sourceLineNo">207</span> * Get the current table descriptor for the given table, or null if none exists.<a name="line.207"></a> -<span class="sourceLineNo">208</span> *<a name="line.208"></a> -<span class="sourceLineNo">209</span> * Uses a local cache of the descriptor but still checks the filesystem on each call<a name="line.209"></a> -<span class="sourceLineNo">210</span> * to see if a newer file has been created since the cached one was read.<a name="line.210"></a> -<span class="sourceLineNo">211</span> */<a name="line.211"></a> -<span class="sourceLineNo">212</span> @Override<a name="line.212"></a> -<span class="sourceLineNo">213</span> @Nullable<a name="line.213"></a> -<span class="sourceLineNo">214</span> public TableDescriptor get(final TableName tablename)<a name="line.214"></a> -<span class="sourceLineNo">215</span> throws IOException {<a name="line.215"></a> -<span class="sourceLineNo">216</span> invocations++;<a name="line.216"></a> -<span class="sourceLineNo">217</span> if (TableName.META_TABLE_NAME.equals(tablename)) {<a name="line.217"></a> -<span class="sourceLineNo">218</span> cachehits++;<a name="line.218"></a> -<span class="sourceLineNo">219</span> return metaTableDescriptor;<a name="line.219"></a> -<span class="sourceLineNo">220</span> }<a name="line.220"></a> -<span class="sourceLineNo">221</span> // hbase:meta is already handled. 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Current table name = "<a name="line.239"></a> -<span class="sourceLineNo">240</span> + tablename, e);<a name="line.240"></a> -<span class="sourceLineNo">241</span> } catch (TableInfoMissingException e) {<a name="line.241"></a> -<span class="sourceLineNo">242</span> // ignore. This is regular operation<a name="line.242"></a> -<span class="sourceLineNo">243</span> } catch (IOException ioe) {<a name="line.243"></a> -<span class="sourceLineNo">244</span> LOG.debug("Exception during readTableDecriptor. 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Should remove this ugly code...<a name="line.135"></a> +<span class="sourceLineNo">136</span> */<a name="line.136"></a> +<span class="sourceLineNo">137</span> public FSTableDescriptors(final Configuration conf, final FileSystem fs,<a name="line.137"></a> +<span class="sourceLineNo">138</span> final Path rootdir, final boolean fsreadonly, final boolean usecache,<a name="line.138"></a> +<span class="sourceLineNo">139</span> Function<TableDescriptorBuilder, TableDescriptorBuilder> metaObserver) throws IOException {<a name="line.139"></a> +<span class="sourceLineNo">140</span> this.fs = fs;<a name="line.140"></a> +<span class="sourceLineNo">141</span> this.rootdir = rootdir;<a name="line.141"></a> +<span class="sourceLineNo">142</span> this.fsreadonly = fsreadonly;<a name="line.142"></a> +<span class="sourceLineNo">143</span> this.usecache = usecache;<a name="line.143"></a> +<span class="sourceLineNo">144</span> this.metaTableDescriptor = metaObserver == null ? createMetaTableDescriptor(conf)<a name="line.144"></a> +<span class="sourceLineNo">145</span> : metaObserver.apply(createMetaTableDescriptorBuilder(conf)).build();<a name="line.145"></a> +<span class="sourceLineNo">146</span> }<a name="line.146"></a> +<span class="sourceLineNo">147</span><a name="line.147"></a> +<span class="sourceLineNo">148</span> @VisibleForTesting<a name="line.148"></a> +<span class="sourceLineNo">149</span> public static TableDescriptorBuilder createMetaTableDescriptorBuilder(final Configuration conf) throws IOException {<a name="line.149"></a> +<span class="sourceLineNo">150</span> // TODO We used to set CacheDataInL1 for META table. When we have BucketCache in file mode, now<a name="line.150"></a> +<span class="sourceLineNo">151</span> // the META table data goes to File mode BC only. Test how that affect the system. 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Needs work. Seems to mess w/ getClosestOrBefore.<a name="line.161"></a> +<span class="sourceLineNo">162</span> .setBloomFilterType(BloomType.NONE)<a name="line.162"></a> +<span class="sourceLineNo">163</span> .build())<a name="line.163"></a> +<span class="sourceLineNo">164</span> .setColumnFamily(ColumnFamilyDescriptorBuilder.newBuilder(HConstants.TABLE_FAMILY)<a name="line.164"></a> +<span class="sourceLineNo">165</span> .setMaxVersions(conf.getInt(HConstants.HBASE_META_VERSIONS,<a name="line.165"></a> +<span class="sourceLineNo">166</span> HConstants.DEFAULT_HBASE_META_VERSIONS))<a name="line.166"></a> +<span class="sourceLineNo">167</span> .setInMemory(true)<a name="line.167"></a> +<span class="sourceLineNo">168</span> .setBlocksize(8 * 1024)<a name="line.168"></a> +<span class="sourceLineNo">169</span> .setScope(HConstants.REPLICATION_SCOPE_LOCAL)<a name="line.169"></a> +<span class="sourceLineNo">170</span> // Disable blooms for meta. Needs work. 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Seems to mess w/ getClosestOrBefore.<a name="line.178"></a> +<span class="sourceLineNo">179</span> .setBloomFilterType(BloomType.NONE)<a name="line.179"></a> +<span class="sourceLineNo">180</span> .build())<a name="line.180"></a> +<span class="sourceLineNo">181</span> .setCoprocessor(CoprocessorDescriptorBuilder.newBuilder(<a name="line.181"></a> +<span class="sourceLineNo">182</span> MultiRowMutationEndpoint.class.getName())<a name="line.182"></a> +<span class="sourceLineNo">183</span> .setPriority(Coprocessor.PRIORITY_SYSTEM).build());<a name="line.183"></a> +<span class="sourceLineNo">184</span> }<a name="line.184"></a> +<span class="sourceLineNo">185</span><a name="line.185"></a> +<span class="sourceLineNo">186</span> @VisibleForTesting<a name="line.186"></a> +<span class="sourceLineNo">187</span> public static TableDescriptor createMetaTableDescriptor(final Configuration conf)<a name="line.187"></a> +<span class="sourceLineNo">188</span> throws IOException {<a name="line.188"></a> +<span class="sourceLineNo">189</span> return createMetaTableDescriptorBuilder(conf).build();<a name="line.189"></a> +<span class="sourceLineNo">190</span> }<a name="line.190"></a> +<span class="sourceLineNo">191</span><a name="line.191"></a> +<span class="sourceLineNo">192</span> @Override<a name="line.192"></a> +<span class="sourceLineNo">193</span> public void setCacheOn() throws IOException {<a name="line.193"></a> +<span class="sourceLineNo">194</span> this.cache.clear();<a name="line.194"></a> +<span class="sourceLineNo">195</span> this.usecache = true;<a name="line.195"></a> +<span class="sourceLineNo">196</span> }<a name="line.196"></a> +<span class="sourceLineNo">197</span><a name="line.197"></a> +<span class="sourceLineNo">198</span> @Override<a name="line.198"></a> +<span class="sourceLineNo">199</span> public void setCacheOff() throws IOException {<a name="line.199"></a> +<span class="sourceLineNo">200</span> this.usecache = false;<a name="line.200"></a> +<span class="sourceLineNo">201</span> this.cache.clear();<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> @VisibleForTesting<a name="line.204"></a> +<span class="sourceLineNo">205</span> public boolean isUsecache() {<a name="line.205"></a> +<span class="sourceLineNo">206</span> return this.usecache;<a name="line.206"></a> +<span class="sourceLineNo">207</span> }<a name="line.207"></a> +<span class="sourceLineNo">208</span><a name="line.208"></a> +<span class="sourceLineNo">209</span> /**<a name="line.209"></a> +<span class="sourceLineNo">210</span> * Get the current table descriptor for the given table, or null if none exists.<a name="line.210"></a> +<span class="sourceLineNo">211</span> *<a name="line.211"></a> +<span class="sourceLineNo">212</span> * Uses a local cache of the descriptor but still checks the filesystem on each call<a name="line.212"></a> +<span class="sourceLineNo">213</span> * to see if a newer file has been created since the cached one was read.<a name="line.213"></a> +<span class="sourceLineNo">214</span> */<a name="line.214"></a> +<span class="sourceLineNo">215</span> @Override<a name="line.215"></a> +<span class="sourceLineNo">216</span> @Nullable<a name="line.216"></a> +<span class="sourceLineNo">217</span> public TableDescriptor get(final TableName tablename)<a name="line.217"></a> +<span class="sourceLineNo">218</span> throws IOException {<a name="line.218"></a> +<span class="sourceLineNo">219</span> invocations++;<a name="line.219"></a> +<span class="sourceLineNo">220</span> if (TableName.META_TABLE_NAME.equals(tablename)) {<a name="line.220"></a> +<span class="sourceLineNo">221</span> cachehits++;<a name="line.221"></a> +<span class="sourceLineNo">222</span> return metaTableDescriptor;<a name="line.222"></a> +<span class="sourceLineNo">223</span> }<a name="line.223"></a> +<span class="sourceLineNo">224</span> // hbase:meta is already handled. If some one tries to get the descriptor for<a name="line.224"></a> +<span class="sourceLineNo">225</span> // .logs, .oldlogs or .corrupt throw an exception.<a name="line.225"></a> +<span class="sourceLineNo">226</span> if (HConstants.HBASE_NON_USER_TABLE_DIRS.contains(tablename.getNameAsString())) {<a name="line.226"></a> +<span class="sourceLineNo">227</span> throw new IOException("No descriptor found for non table = " + tablename);<a name="line.227"></a> +<span class="sourceLineNo">228</span> }<a name="line.228"></a> +<span class="sourceLineNo">229</span><a name="line.229"></a> +<span class="sourceLineNo">230</span> if (usecache) {<a name="line.230"></a> +<span class="sourceLineNo">231</span> // Look in cache of descriptors.<a name="line.231"></a> +<span class="sourceLineNo">232</span> TableDescriptor cachedtdm = this.cache.get(tablename);<a name="line.232"></a> +<span class="sourceLineNo">233</span> if (cachedtdm != null) {<a name="line.233"></a> +<span class="sourceLineNo">234</span> cachehits++;<a name="line.234"></a> +<span class="sourceLineNo">235</span> return cachedtdm;<a name="line.235"></a> +<span class="sourceLineNo">236</span> }<a name="line.236"></a> +<span class="sourceLineNo">237</span> }<a name="line.237"></a> +<span class="sourceLineNo">238</span> TableDescriptor tdmt = null;<a name="line.238"></a> +<span class="sourceLineNo">239</span> try {<a name="line.239"></a> +<span class="sourceLineNo">240</span> tdmt = getTableDescriptorFromFs(fs, rootdir, tablename);<a name="line.240"></a> +<span class="sourceLineNo">241</span> } catch (NullPointerException e) {<a name="line.241"></a> +<span class="sourceLineNo">242</span> LOG.debug("Exception during readTableDecriptor. Current table name = "<a name="line.242"></a> +<span class="sourceLineNo">243</span> + tablename, e);<a name="line.243"></a> +<span class="sourceLineNo">244</span> } catch (TableInfoMissingException e) {<a name="line.244"></a> +<span class="sourceLineNo">245</span> // ignore. This is regular operation<a name="line.245"></a> +<span class="sourceLineNo">246</span> } catch (IOException ioe) {<a name="line.246"></a> +<span class="sourceLineNo">247</span> LOG.debug("Exception during readTableDecriptor. 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<TRUNCATED>
