http://git-wip-us.apache.org/repos/asf/hbase-site/blob/abb69192/devapidocs/src-html/org/apache/hadoop/hbase/client/AsyncRequestFutureImpl.SingleServerRequestRunnable.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/client/AsyncRequestFutureImpl.SingleServerRequestRunnable.html b/devapidocs/src-html/org/apache/hadoop/hbase/client/AsyncRequestFutureImpl.SingleServerRequestRunnable.html index 3fa16c1..d3a1e91 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/client/AsyncRequestFutureImpl.SingleServerRequestRunnable.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/client/AsyncRequestFutureImpl.SingleServerRequestRunnable.html @@ -56,1228 +56,1235 @@ <span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.RetryImmediatelyException;<a name="line.48"></a> <span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.ServerName;<a name="line.49"></a> <span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.TableName;<a name="line.50"></a> -<span class="sourceLineNo">051</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.51"></a> -<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.client.backoff.ServerStatistics;<a name="line.52"></a> -<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.client.coprocessor.Batch;<a name="line.53"></a> -<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.exceptions.ClientExceptionsUtil;<a name="line.54"></a> -<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.55"></a> -<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos;<a name="line.56"></a> -<span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.57"></a> -<span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.58"></a> -<span class="sourceLineNo">059</span>import org.apache.htrace.Trace;<a name="line.59"></a> -<span class="sourceLineNo">060</span><a name="line.60"></a> -<span class="sourceLineNo">061</span>/**<a name="line.61"></a> -<span class="sourceLineNo">062</span> * The context, and return value, for a single submit/submitAll call.<a name="line.62"></a> -<span class="sourceLineNo">063</span> * Note on how this class (one AP submit) works. Initially, all requests are split into groups<a name="line.63"></a> -<span class="sourceLineNo">064</span> * by server; request is sent to each server in parallel; the RPC calls are not async so a<a name="line.64"></a> -<span class="sourceLineNo">065</span> * thread per server is used. Every time some actions fail, regions/locations might have<a name="line.65"></a> -<span class="sourceLineNo">066</span> * changed, so we re-group them by server and region again and send these groups in parallel<a name="line.66"></a> -<span class="sourceLineNo">067</span> * too. The result, in case of retries, is a "tree" of threads, with parent exiting after<a name="line.67"></a> -<span class="sourceLineNo">068</span> * scheduling children. This is why lots of code doesn't require any synchronization.<a name="line.68"></a> -<span class="sourceLineNo">069</span> */<a name="line.69"></a> -<span class="sourceLineNo">070</span>@InterfaceAudience.Private<a name="line.70"></a> -<span class="sourceLineNo">071</span>class AsyncRequestFutureImpl<CResult> implements AsyncRequestFuture {<a name="line.71"></a> -<span class="sourceLineNo">072</span><a name="line.72"></a> -<span class="sourceLineNo">073</span> private static final Log LOG = LogFactory.getLog(AsyncRequestFutureImpl.class);<a name="line.73"></a> -<span class="sourceLineNo">074</span><a name="line.74"></a> -<span class="sourceLineNo">075</span> private RetryingTimeTracker tracker;<a name="line.75"></a> -<span class="sourceLineNo">076</span><a name="line.76"></a> -<span class="sourceLineNo">077</span> /**<a name="line.77"></a> -<span class="sourceLineNo">078</span> * Runnable (that can be submitted to thread pool) that waits for when it's time<a name="line.78"></a> -<span class="sourceLineNo">079</span> * to issue replica calls, finds region replicas, groups the requests by replica and<a name="line.79"></a> -<span class="sourceLineNo">080</span> * issues the calls (on separate threads, via sendMultiAction).<a name="line.80"></a> -<span class="sourceLineNo">081</span> * This is done on a separate thread because we don't want to wait on user thread for<a name="line.81"></a> -<span class="sourceLineNo">082</span> * our asynchronous call, and usually we have to wait before making replica calls.<a name="line.82"></a> -<span class="sourceLineNo">083</span> */<a name="line.83"></a> -<span class="sourceLineNo">084</span> private final class ReplicaCallIssuingRunnable implements Runnable {<a name="line.84"></a> -<span class="sourceLineNo">085</span> private final long startTime;<a name="line.85"></a> -<span class="sourceLineNo">086</span> private final List<Action> initialActions;<a name="line.86"></a> -<span class="sourceLineNo">087</span><a name="line.87"></a> -<span class="sourceLineNo">088</span> public ReplicaCallIssuingRunnable(List<Action> initialActions, long startTime) {<a name="line.88"></a> -<span class="sourceLineNo">089</span> this.initialActions = initialActions;<a name="line.89"></a> -<span class="sourceLineNo">090</span> this.startTime = startTime;<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> @Override<a name="line.93"></a> -<span class="sourceLineNo">094</span> public void run() {<a name="line.94"></a> -<span class="sourceLineNo">095</span> boolean done = false;<a name="line.95"></a> -<span class="sourceLineNo">096</span> if (asyncProcess.primaryCallTimeoutMicroseconds > 0) {<a name="line.96"></a> -<span class="sourceLineNo">097</span> try {<a name="line.97"></a> -<span class="sourceLineNo">098</span> done = waitUntilDone(startTime * 1000L + asyncProcess.primaryCallTimeoutMicroseconds);<a name="line.98"></a> -<span class="sourceLineNo">099</span> } catch (InterruptedException ex) {<a name="line.99"></a> -<span class="sourceLineNo">100</span> LOG.error("Replica thread was interrupted - no replica calls: " + ex.getMessage());<a name="line.100"></a> -<span class="sourceLineNo">101</span> return;<a name="line.101"></a> -<span class="sourceLineNo">102</span> }<a name="line.102"></a> -<span class="sourceLineNo">103</span> }<a name="line.103"></a> -<span class="sourceLineNo">104</span> if (done) return; // Done within primary timeout<a name="line.104"></a> -<span class="sourceLineNo">105</span> Map<ServerName, MultiAction> actionsByServer = new HashMap<>();<a name="line.105"></a> -<span class="sourceLineNo">106</span> List<Action> unknownLocActions = new ArrayList<>();<a name="line.106"></a> -<span class="sourceLineNo">107</span> if (replicaGetIndices == null) {<a name="line.107"></a> -<span class="sourceLineNo">108</span> for (int i = 0; i < results.length; ++i) {<a name="line.108"></a> -<span class="sourceLineNo">109</span> addReplicaActions(i, actionsByServer, unknownLocActions);<a name="line.109"></a> -<span class="sourceLineNo">110</span> }<a name="line.110"></a> -<span class="sourceLineNo">111</span> } else {<a name="line.111"></a> -<span class="sourceLineNo">112</span> for (int replicaGetIndice : replicaGetIndices) {<a name="line.112"></a> -<span class="sourceLineNo">113</span> addReplicaActions(replicaGetIndice, actionsByServer, unknownLocActions);<a name="line.113"></a> -<span class="sourceLineNo">114</span> }<a name="line.114"></a> -<span class="sourceLineNo">115</span> }<a name="line.115"></a> -<span class="sourceLineNo">116</span> if (!actionsByServer.isEmpty()) {<a name="line.116"></a> -<span class="sourceLineNo">117</span> sendMultiAction(actionsByServer, 1, null, unknownLocActions.isEmpty());<a name="line.117"></a> -<span class="sourceLineNo">118</span> }<a name="line.118"></a> -<span class="sourceLineNo">119</span> if (!unknownLocActions.isEmpty()) {<a name="line.119"></a> -<span class="sourceLineNo">120</span> actionsByServer = new HashMap<>();<a name="line.120"></a> -<span class="sourceLineNo">121</span> for (Action action : unknownLocActions) {<a name="line.121"></a> -<span class="sourceLineNo">122</span> addReplicaActionsAgain(action, actionsByServer);<a name="line.122"></a> -<span class="sourceLineNo">123</span> }<a name="line.123"></a> -<span class="sourceLineNo">124</span> // Some actions may have completely failed, they are handled inside addAgain.<a name="line.124"></a> -<span class="sourceLineNo">125</span> if (!actionsByServer.isEmpty()) {<a name="line.125"></a> -<span class="sourceLineNo">126</span> sendMultiAction(actionsByServer, 1, null, true);<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> }<a name="line.129"></a> -<span class="sourceLineNo">130</span><a name="line.130"></a> -<span class="sourceLineNo">131</span> /**<a name="line.131"></a> -<span class="sourceLineNo">132</span> * Add replica actions to action map by server.<a name="line.132"></a> -<span class="sourceLineNo">133</span> * @param index Index of the original action.<a name="line.133"></a> -<span class="sourceLineNo">134</span> * @param actionsByServer The map by server to add it to.<a name="line.134"></a> -<span class="sourceLineNo">135</span> */<a name="line.135"></a> -<span class="sourceLineNo">136</span> private void addReplicaActions(int index, Map<ServerName, MultiAction> actionsByServer,<a name="line.136"></a> -<span class="sourceLineNo">137</span> List<Action> unknownReplicaActions) {<a name="line.137"></a> -<span class="sourceLineNo">138</span> if (results[index] != null) return; // opportunistic. Never goes from non-null to null.<a name="line.138"></a> -<span class="sourceLineNo">139</span> Action action = initialActions.get(index);<a name="line.139"></a> -<span class="sourceLineNo">140</span> RegionLocations loc = findAllLocationsOrFail(action, true);<a name="line.140"></a> -<span class="sourceLineNo">141</span> if (loc == null) return;<a name="line.141"></a> -<span class="sourceLineNo">142</span> HRegionLocation[] locs = loc.getRegionLocations();<a name="line.142"></a> -<span class="sourceLineNo">143</span> if (locs.length == 1) {<a name="line.143"></a> -<span class="sourceLineNo">144</span> LOG.warn("No replicas found for " + action.getAction());<a name="line.144"></a> -<span class="sourceLineNo">145</span> return;<a name="line.145"></a> -<span class="sourceLineNo">146</span> }<a name="line.146"></a> -<span class="sourceLineNo">147</span> synchronized (replicaResultLock) {<a name="line.147"></a> -<span class="sourceLineNo">148</span> // Don't run replica calls if the original has finished. We could do it e.g. if<a name="line.148"></a> -<span class="sourceLineNo">149</span> // original has already failed before first replica call (unlikely given retries),<a name="line.149"></a> -<span class="sourceLineNo">150</span> // but that would require additional synchronization w.r.t. returning to caller.<a name="line.150"></a> -<span class="sourceLineNo">151</span> if (results[index] != null) return;<a name="line.151"></a> -<span class="sourceLineNo">152</span> // We set the number of calls here. After that any path must call setResult/setError.<a name="line.152"></a> -<span class="sourceLineNo">153</span> // True even for replicas that are not found - if we refuse to send we MUST set error.<a name="line.153"></a> -<span class="sourceLineNo">154</span> results[index] = new ReplicaResultState(locs.length);<a name="line.154"></a> -<span class="sourceLineNo">155</span> }<a name="line.155"></a> -<span class="sourceLineNo">156</span> for (int i = 1; i < locs.length; ++i) {<a name="line.156"></a> -<span class="sourceLineNo">157</span> Action replicaAction = new Action(action, i);<a name="line.157"></a> -<span class="sourceLineNo">158</span> if (locs[i] != null) {<a name="line.158"></a> -<span class="sourceLineNo">159</span> asyncProcess.addAction(locs[i].getServerName(), locs[i].getRegionInfo().getRegionName(),<a name="line.159"></a> -<span class="sourceLineNo">160</span> replicaAction, actionsByServer, nonceGroup);<a name="line.160"></a> -<span class="sourceLineNo">161</span> } else {<a name="line.161"></a> -<span class="sourceLineNo">162</span> unknownReplicaActions.add(replicaAction);<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> }<a name="line.165"></a> -<span class="sourceLineNo">166</span><a name="line.166"></a> -<span class="sourceLineNo">167</span> private void addReplicaActionsAgain(<a name="line.167"></a> -<span class="sourceLineNo">168</span> Action action, Map<ServerName, MultiAction> actionsByServer) {<a name="line.168"></a> -<span class="sourceLineNo">169</span> if (action.getReplicaId() == RegionReplicaUtil.DEFAULT_REPLICA_ID) {<a name="line.169"></a> -<span class="sourceLineNo">170</span> throw new AssertionError("Cannot have default replica here");<a name="line.170"></a> -<span class="sourceLineNo">171</span> }<a name="line.171"></a> -<span class="sourceLineNo">172</span> HRegionLocation loc = getReplicaLocationOrFail(action);<a name="line.172"></a> -<span class="sourceLineNo">173</span> if (loc == null) return;<a name="line.173"></a> -<span class="sourceLineNo">174</span> asyncProcess.addAction(loc.getServerName(), loc.getRegionInfo().getRegionName(),<a name="line.174"></a> -<span class="sourceLineNo">175</span> action, actionsByServer, nonceGroup);<a name="line.175"></a> -<span class="sourceLineNo">176</span> }<a name="line.176"></a> -<span class="sourceLineNo">177</span> }<a name="line.177"></a> -<span class="sourceLineNo">178</span><a name="line.178"></a> -<span class="sourceLineNo">179</span> /**<a name="line.179"></a> -<span class="sourceLineNo">180</span> * Runnable (that can be submitted to thread pool) that submits MultiAction to a<a name="line.180"></a> -<span class="sourceLineNo">181</span> * single server. The server call is synchronous, therefore we do it on a thread pool.<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> final class SingleServerRequestRunnable implements Runnable {<a name="line.184"></a> -<span class="sourceLineNo">185</span> private final MultiAction multiAction;<a name="line.185"></a> -<span class="sourceLineNo">186</span> private final int numAttempt;<a name="line.186"></a> -<span class="sourceLineNo">187</span> private final ServerName server;<a name="line.187"></a> -<span class="sourceLineNo">188</span> private final Set<CancellableRegionServerCallable> callsInProgress;<a name="line.188"></a> -<span class="sourceLineNo">189</span> @VisibleForTesting<a name="line.189"></a> -<span class="sourceLineNo">190</span> SingleServerRequestRunnable(<a name="line.190"></a> -<span class="sourceLineNo">191</span> MultiAction multiAction, int numAttempt, ServerName server,<a name="line.191"></a> -<span class="sourceLineNo">192</span> Set<CancellableRegionServerCallable> callsInProgress) {<a name="line.192"></a> -<span class="sourceLineNo">193</span> this.multiAction = multiAction;<a name="line.193"></a> -<span class="sourceLineNo">194</span> this.numAttempt = numAttempt;<a name="line.194"></a> -<span class="sourceLineNo">195</span> this.server = server;<a name="line.195"></a> -<span class="sourceLineNo">196</span> this.callsInProgress = callsInProgress;<a name="line.196"></a> -<span class="sourceLineNo">197</span> }<a name="line.197"></a> -<span class="sourceLineNo">198</span><a name="line.198"></a> -<span class="sourceLineNo">199</span> @Override<a name="line.199"></a> -<span class="sourceLineNo">200</span> public void run() {<a name="line.200"></a> -<span class="sourceLineNo">201</span> AbstractResponse res = null;<a name="line.201"></a> -<span class="sourceLineNo">202</span> CancellableRegionServerCallable callable = currentCallable;<a name="line.202"></a> -<span class="sourceLineNo">203</span> try {<a name="line.203"></a> -<span class="sourceLineNo">204</span> // setup the callable based on the actions, if we don't have one already from the request<a name="line.204"></a> -<span class="sourceLineNo">205</span> if (callable == null) {<a name="line.205"></a> -<span class="sourceLineNo">206</span> callable = createCallable(server, tableName, multiAction);<a name="line.206"></a> -<span class="sourceLineNo">207</span> }<a name="line.207"></a> -<span class="sourceLineNo">208</span> RpcRetryingCaller<AbstractResponse> caller = asyncProcess.createCaller(callable,rpcTimeout);<a name="line.208"></a> -<span class="sourceLineNo">209</span> try {<a name="line.209"></a> -<span class="sourceLineNo">210</span> if (callsInProgress != null) {<a name="line.210"></a> -<span class="sourceLineNo">211</span> callsInProgress.add(callable);<a name="line.211"></a> -<span class="sourceLineNo">212</span> }<a name="line.212"></a> -<span class="sourceLineNo">213</span> res = caller.callWithoutRetries(callable, operationTimeout);<a name="line.213"></a> -<span class="sourceLineNo">214</span> if (res == null) {<a name="line.214"></a> -<span class="sourceLineNo">215</span> // Cancelled<a name="line.215"></a> -<span class="sourceLineNo">216</span> return;<a name="line.216"></a> -<span class="sourceLineNo">217</span> }<a name="line.217"></a> -<span class="sourceLineNo">218</span> } catch (IOException e) {<a name="line.218"></a> -<span class="sourceLineNo">219</span> // The service itself failed . It may be an error coming from the communication<a name="line.219"></a> -<span class="sourceLineNo">220</span> // layer, but, as well, a functional error raised by the server.<a name="line.220"></a> -<span class="sourceLineNo">221</span> receiveGlobalFailure(multiAction, server, numAttempt, e);<a name="line.221"></a> -<span class="sourceLineNo">222</span> return;<a name="line.222"></a> -<span class="sourceLineNo">223</span> } catch (Throwable t) {<a name="line.223"></a> -<span class="sourceLineNo">224</span> // This should not happen. Let's log & retry anyway.<a name="line.224"></a> -<span class="sourceLineNo">225</span> LOG.error("#" + asyncProcess.id + ", Caught throwable while calling. This is unexpected." +<a name="line.225"></a> -<span class="sourceLineNo">226</span> " Retrying. Server is " + server + ", tableName=" + tableName, t);<a name="line.226"></a> -<span class="sourceLineNo">227</span> receiveGlobalFailure(multiAction, server, numAttempt, t);<a name="line.227"></a> -<span class="sourceLineNo">228</span> return;<a name="line.228"></a> -<span class="sourceLineNo">229</span> }<a name="line.229"></a> -<span class="sourceLineNo">230</span> if (res.type() == AbstractResponse.ResponseType.MULTI) {<a name="line.230"></a> -<span class="sourceLineNo">231</span> // Normal case: we received an answer from the server, and it's not an exception.<a name="line.231"></a> -<span class="sourceLineNo">232</span> receiveMultiAction(multiAction, server, (MultiResponse) res, numAttempt);<a name="line.232"></a> -<span class="sourceLineNo">233</span> } else {<a name="line.233"></a> -<span class="sourceLineNo">234</span> if (results != null) {<a name="line.234"></a> -<span class="sourceLineNo">235</span> SingleResponse singleResponse = (SingleResponse) res;<a name="line.235"></a> -<span class="sourceLineNo">236</span> results[0] = singleResponse.getEntry();<a name="line.236"></a> -<span class="sourceLineNo">237</span> }<a name="line.237"></a> -<span class="sourceLineNo">238</span> decActionCounter(1);<a name="line.238"></a> -<span class="sourceLineNo">239</span> }<a name="line.239"></a> -<span class="sourceLineNo">240</span> } catch (Throwable t) {<a name="line.240"></a> -<span class="sourceLineNo">241</span> // Something really bad happened. We are on the send thread that will now die.<a name="line.241"></a> -<span class="sourceLineNo">242</span> LOG.error("Internal AsyncProcess #" + asyncProcess.id + " error for "<a name="line.242"></a> -<span class="sourceLineNo">243</span> + tableName + " processing for " + server, t);<a name="line.243"></a> -<span class="sourceLineNo">244</span> throw new RuntimeException(t);<a name="line.244"></a> -<span class="sourceLineNo">245</span> } finally {<a name="line.245"></a> -<span class="sourceLineNo">246</span> asyncProcess.decTaskCounters(multiAction.getRegions(), server);<a name="line.246"></a> -<span class="sourceLineNo">247</span> if (callsInProgress != null && callable != null && res != null) {<a name="line.247"></a> -<span class="sourceLineNo">248</span> callsInProgress.remove(callable);<a name="line.248"></a> -<span class="sourceLineNo">249</span> }<a name="line.249"></a> -<span class="sourceLineNo">250</span> }<a name="line.250"></a> -<span class="sourceLineNo">251</span> }<a name="line.251"></a> -<span class="sourceLineNo">252</span> }<a name="line.252"></a> -<span class="sourceLineNo">253</span><a name="line.253"></a> -<span class="sourceLineNo">254</span> private final Batch.Callback<CResult> callback;<a name="line.254"></a> -<span class="sourceLineNo">255</span> private final BatchErrors errors;<a name="line.255"></a> -<span class="sourceLineNo">256</span> private final ConnectionImplementation.ServerErrorTracker errorsByServer;<a name="line.256"></a> -<span class="sourceLineNo">257</span> private final ExecutorService pool;<a name="line.257"></a> -<span class="sourceLineNo">258</span> private final Set<CancellableRegionServerCallable> callsInProgress;<a name="line.258"></a> -<span class="sourceLineNo">259</span><a name="line.259"></a> +<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.trace.TraceUtil;<a name="line.51"></a> +<span class="sourceLineNo">052</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.52"></a> +<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.client.backoff.ServerStatistics;<a name="line.53"></a> +<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.client.coprocessor.Batch;<a name="line.54"></a> +<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.exceptions.ClientExceptionsUtil;<a name="line.55"></a> +<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.56"></a> +<span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos;<a name="line.57"></a> +<span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.58"></a> +<span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.59"></a> +<span class="sourceLineNo">060</span>import org.apache.htrace.core.Tracer;<a name="line.60"></a> +<span class="sourceLineNo">061</span><a name="line.61"></a> +<span class="sourceLineNo">062</span>/**<a name="line.62"></a> +<span class="sourceLineNo">063</span> * The context, and return value, for a single submit/submitAll call.<a name="line.63"></a> +<span class="sourceLineNo">064</span> * Note on how this class (one AP submit) works. Initially, all requests are split into groups<a name="line.64"></a> +<span class="sourceLineNo">065</span> * by server; request is sent to each server in parallel; the RPC calls are not async so a<a name="line.65"></a> +<span class="sourceLineNo">066</span> * thread per server is used. Every time some actions fail, regions/locations might have<a name="line.66"></a> +<span class="sourceLineNo">067</span> * changed, so we re-group them by server and region again and send these groups in parallel<a name="line.67"></a> +<span class="sourceLineNo">068</span> * too. The result, in case of retries, is a "tree" of threads, with parent exiting after<a name="line.68"></a> +<span class="sourceLineNo">069</span> * scheduling children. This is why lots of code doesn't require any synchronization.<a name="line.69"></a> +<span class="sourceLineNo">070</span> */<a name="line.70"></a> +<span class="sourceLineNo">071</span>@InterfaceAudience.Private<a name="line.71"></a> +<span class="sourceLineNo">072</span>class AsyncRequestFutureImpl<CResult> implements AsyncRequestFuture {<a name="line.72"></a> +<span class="sourceLineNo">073</span><a name="line.73"></a> +<span class="sourceLineNo">074</span> private static final Log LOG = LogFactory.getLog(AsyncRequestFutureImpl.class);<a name="line.74"></a> +<span class="sourceLineNo">075</span><a name="line.75"></a> +<span class="sourceLineNo">076</span> private RetryingTimeTracker tracker;<a name="line.76"></a> +<span class="sourceLineNo">077</span><a name="line.77"></a> +<span class="sourceLineNo">078</span> /**<a name="line.78"></a> +<span class="sourceLineNo">079</span> * Runnable (that can be submitted to thread pool) that waits for when it's time<a name="line.79"></a> +<span class="sourceLineNo">080</span> * to issue replica calls, finds region replicas, groups the requests by replica and<a name="line.80"></a> +<span class="sourceLineNo">081</span> * issues the calls (on separate threads, via sendMultiAction).<a name="line.81"></a> +<span class="sourceLineNo">082</span> * This is done on a separate thread because we don't want to wait on user thread for<a name="line.82"></a> +<span class="sourceLineNo">083</span> * our asynchronous call, and usually we have to wait before making replica calls.<a name="line.83"></a> +<span class="sourceLineNo">084</span> */<a name="line.84"></a> +<span class="sourceLineNo">085</span> private final class ReplicaCallIssuingRunnable implements Runnable {<a name="line.85"></a> +<span class="sourceLineNo">086</span> private final long startTime;<a name="line.86"></a> +<span class="sourceLineNo">087</span> private final List<Action> initialActions;<a name="line.87"></a> +<span class="sourceLineNo">088</span><a name="line.88"></a> +<span class="sourceLineNo">089</span> public ReplicaCallIssuingRunnable(List<Action> initialActions, long startTime) {<a name="line.89"></a> +<span class="sourceLineNo">090</span> this.initialActions = initialActions;<a name="line.90"></a> +<span class="sourceLineNo">091</span> this.startTime = startTime;<a name="line.91"></a> +<span class="sourceLineNo">092</span> }<a name="line.92"></a> +<span class="sourceLineNo">093</span><a name="line.93"></a> +<span class="sourceLineNo">094</span> @Override<a name="line.94"></a> +<span class="sourceLineNo">095</span> public void run() {<a name="line.95"></a> +<span class="sourceLineNo">096</span> boolean done = false;<a name="line.96"></a> +<span class="sourceLineNo">097</span> if (asyncProcess.primaryCallTimeoutMicroseconds > 0) {<a name="line.97"></a> +<span class="sourceLineNo">098</span> try {<a name="line.98"></a> +<span class="sourceLineNo">099</span> done = waitUntilDone(startTime * 1000L + asyncProcess.primaryCallTimeoutMicroseconds);<a name="line.99"></a> +<span class="sourceLineNo">100</span> } catch (InterruptedException ex) {<a name="line.100"></a> +<span class="sourceLineNo">101</span> LOG.error("Replica thread was interrupted - no replica calls: " + ex.getMessage());<a name="line.101"></a> +<span class="sourceLineNo">102</span> return;<a name="line.102"></a> +<span class="sourceLineNo">103</span> }<a name="line.103"></a> +<span class="sourceLineNo">104</span> }<a name="line.104"></a> +<span class="sourceLineNo">105</span> if (done) return; // Done within primary timeout<a name="line.105"></a> +<span class="sourceLineNo">106</span> Map<ServerName, MultiAction> actionsByServer = new HashMap<>();<a name="line.106"></a> +<span class="sourceLineNo">107</span> List<Action> unknownLocActions = new ArrayList<>();<a name="line.107"></a> +<span class="sourceLineNo">108</span> if (replicaGetIndices == null) {<a name="line.108"></a> +<span class="sourceLineNo">109</span> for (int i = 0; i < results.length; ++i) {<a name="line.109"></a> +<span class="sourceLineNo">110</span> addReplicaActions(i, actionsByServer, unknownLocActions);<a name="line.110"></a> +<span class="sourceLineNo">111</span> }<a name="line.111"></a> +<span class="sourceLineNo">112</span> } else {<a name="line.112"></a> +<span class="sourceLineNo">113</span> for (int replicaGetIndice : replicaGetIndices) {<a name="line.113"></a> +<span class="sourceLineNo">114</span> addReplicaActions(replicaGetIndice, actionsByServer, unknownLocActions);<a name="line.114"></a> +<span class="sourceLineNo">115</span> }<a name="line.115"></a> +<span class="sourceLineNo">116</span> }<a name="line.116"></a> +<span class="sourceLineNo">117</span> if (!actionsByServer.isEmpty()) {<a name="line.117"></a> +<span class="sourceLineNo">118</span> sendMultiAction(actionsByServer, 1, null, unknownLocActions.isEmpty());<a name="line.118"></a> +<span class="sourceLineNo">119</span> }<a name="line.119"></a> +<span class="sourceLineNo">120</span> if (!unknownLocActions.isEmpty()) {<a name="line.120"></a> +<span class="sourceLineNo">121</span> actionsByServer = new HashMap<>();<a name="line.121"></a> +<span class="sourceLineNo">122</span> for (Action action : unknownLocActions) {<a name="line.122"></a> +<span class="sourceLineNo">123</span> addReplicaActionsAgain(action, actionsByServer);<a name="line.123"></a> +<span class="sourceLineNo">124</span> }<a name="line.124"></a> +<span class="sourceLineNo">125</span> // Some actions may have completely failed, they are handled inside addAgain.<a name="line.125"></a> +<span class="sourceLineNo">126</span> if (!actionsByServer.isEmpty()) {<a name="line.126"></a> +<span class="sourceLineNo">127</span> sendMultiAction(actionsByServer, 1, null, true);<a name="line.127"></a> +<span class="sourceLineNo">128</span> }<a name="line.128"></a> +<span class="sourceLineNo">129</span> }<a name="line.129"></a> +<span class="sourceLineNo">130</span> }<a name="line.130"></a> +<span class="sourceLineNo">131</span><a name="line.131"></a> +<span class="sourceLineNo">132</span> /**<a name="line.132"></a> +<span class="sourceLineNo">133</span> * Add replica actions to action map by server.<a name="line.133"></a> +<span class="sourceLineNo">134</span> * @param index Index of the original action.<a name="line.134"></a> +<span class="sourceLineNo">135</span> * @param actionsByServer The map by server to add it to.<a name="line.135"></a> +<span class="sourceLineNo">136</span> */<a name="line.136"></a> +<span class="sourceLineNo">137</span> private void addReplicaActions(int index, Map<ServerName, MultiAction> actionsByServer,<a name="line.137"></a> +<span class="sourceLineNo">138</span> List<Action> unknownReplicaActions) {<a name="line.138"></a> +<span class="sourceLineNo">139</span> if (results[index] != null) return; // opportunistic. Never goes from non-null to null.<a name="line.139"></a> +<span class="sourceLineNo">140</span> Action action = initialActions.get(index);<a name="line.140"></a> +<span class="sourceLineNo">141</span> RegionLocations loc = findAllLocationsOrFail(action, true);<a name="line.141"></a> +<span class="sourceLineNo">142</span> if (loc == null) return;<a name="line.142"></a> +<span class="sourceLineNo">143</span> HRegionLocation[] locs = loc.getRegionLocations();<a name="line.143"></a> +<span class="sourceLineNo">144</span> if (locs.length == 1) {<a name="line.144"></a> +<span class="sourceLineNo">145</span> LOG.warn("No replicas found for " + action.getAction());<a name="line.145"></a> +<span class="sourceLineNo">146</span> return;<a name="line.146"></a> +<span class="sourceLineNo">147</span> }<a name="line.147"></a> +<span class="sourceLineNo">148</span> synchronized (replicaResultLock) {<a name="line.148"></a> +<span class="sourceLineNo">149</span> // Don't run replica calls if the original has finished. We could do it e.g. if<a name="line.149"></a> +<span class="sourceLineNo">150</span> // original has already failed before first replica call (unlikely given retries),<a name="line.150"></a> +<span class="sourceLineNo">151</span> // but that would require additional synchronization w.r.t. returning to caller.<a name="line.151"></a> +<span class="sourceLineNo">152</span> if (results[index] != null) return;<a name="line.152"></a> +<span class="sourceLineNo">153</span> // We set the number of calls here. After that any path must call setResult/setError.<a name="line.153"></a> +<span class="sourceLineNo">154</span> // True even for replicas that are not found - if we refuse to send we MUST set error.<a name="line.154"></a> +<span class="sourceLineNo">155</span> results[index] = new ReplicaResultState(locs.length);<a name="line.155"></a> +<span class="sourceLineNo">156</span> }<a name="line.156"></a> +<span class="sourceLineNo">157</span> for (int i = 1; i < locs.length; ++i) {<a name="line.157"></a> +<span class="sourceLineNo">158</span> Action replicaAction = new Action(action, i);<a name="line.158"></a> +<span class="sourceLineNo">159</span> if (locs[i] != null) {<a name="line.159"></a> +<span class="sourceLineNo">160</span> asyncProcess.addAction(locs[i].getServerName(), locs[i].getRegionInfo().getRegionName(),<a name="line.160"></a> +<span class="sourceLineNo">161</span> replicaAction, actionsByServer, nonceGroup);<a name="line.161"></a> +<span class="sourceLineNo">162</span> } else {<a name="line.162"></a> +<span class="sourceLineNo">163</span> unknownReplicaActions.add(replicaAction);<a name="line.163"></a> +<span class="sourceLineNo">164</span> }<a name="line.164"></a> +<span class="sourceLineNo">165</span> }<a name="line.165"></a> +<span class="sourceLineNo">166</span> }<a name="line.166"></a> +<span class="sourceLineNo">167</span><a name="line.167"></a> +<span class="sourceLineNo">168</span> private void addReplicaActionsAgain(<a name="line.168"></a> +<span class="sourceLineNo">169</span> Action action, Map<ServerName, MultiAction> actionsByServer) {<a name="line.169"></a> +<span class="sourceLineNo">170</span> if (action.getReplicaId() == RegionReplicaUtil.DEFAULT_REPLICA_ID) {<a name="line.170"></a> +<span class="sourceLineNo">171</span> throw new AssertionError("Cannot have default replica here");<a name="line.171"></a> +<span class="sourceLineNo">172</span> }<a name="line.172"></a> +<span class="sourceLineNo">173</span> HRegionLocation loc = getReplicaLocationOrFail(action);<a name="line.173"></a> +<span class="sourceLineNo">174</span> if (loc == null) return;<a name="line.174"></a> +<span class="sourceLineNo">175</span> asyncProcess.addAction(loc.getServerName(), loc.getRegionInfo().getRegionName(),<a name="line.175"></a> +<span class="sourceLineNo">176</span> action, actionsByServer, nonceGroup);<a name="line.176"></a> +<span class="sourceLineNo">177</span> }<a name="line.177"></a> +<span class="sourceLineNo">178</span> }<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> * Runnable (that can be submitted to thread pool) that submits MultiAction to a<a name="line.181"></a> +<span class="sourceLineNo">182</span> * single server. The server call is synchronous, therefore we do it on a thread pool.<a name="line.182"></a> +<span class="sourceLineNo">183</span> */<a name="line.183"></a> +<span class="sourceLineNo">184</span> @VisibleForTesting<a name="line.184"></a> +<span class="sourceLineNo">185</span> final class SingleServerRequestRunnable implements Runnable {<a name="line.185"></a> +<span class="sourceLineNo">186</span> private final MultiAction multiAction;<a name="line.186"></a> +<span class="sourceLineNo">187</span> private final int numAttempt;<a name="line.187"></a> +<span class="sourceLineNo">188</span> private final ServerName server;<a name="line.188"></a> +<span class="sourceLineNo">189</span> private final Set<CancellableRegionServerCallable> callsInProgress;<a name="line.189"></a> +<span class="sourceLineNo">190</span> @VisibleForTesting<a name="line.190"></a> +<span class="sourceLineNo">191</span> SingleServerRequestRunnable(<a name="line.191"></a> +<span class="sourceLineNo">192</span> MultiAction multiAction, int numAttempt, ServerName server,<a name="line.192"></a> +<span class="sourceLineNo">193</span> Set<CancellableRegionServerCallable> callsInProgress) {<a name="line.193"></a> +<span class="sourceLineNo">194</span> this.multiAction = multiAction;<a name="line.194"></a> +<span class="sourceLineNo">195</span> this.numAttempt = numAttempt;<a name="line.195"></a> +<span class="sourceLineNo">196</span> this.server = server;<a name="line.196"></a> +<span class="sourceLineNo">197</span> this.callsInProgress = callsInProgress;<a name="line.197"></a> +<span class="sourceLineNo">198</span> }<a name="line.198"></a> +<span class="sourceLineNo">199</span><a name="line.199"></a> +<span class="sourceLineNo">200</span> @Override<a name="line.200"></a> +<span class="sourceLineNo">201</span> public void run() {<a name="line.201"></a> +<span class="sourceLineNo">202</span> AbstractResponse res = null;<a name="line.202"></a> +<span class="sourceLineNo">203</span> CancellableRegionServerCallable callable = currentCallable;<a name="line.203"></a> +<span class="sourceLineNo">204</span> try {<a name="line.204"></a> +<span class="sourceLineNo">205</span> // setup the callable based on the actions, if we don't have one already from the request<a name="line.205"></a> +<span class="sourceLineNo">206</span> if (callable == null) {<a name="line.206"></a> +<span class="sourceLineNo">207</span> callable = createCallable(server, tableName, multiAction);<a name="line.207"></a> +<span class="sourceLineNo">208</span> }<a name="line.208"></a> +<span class="sourceLineNo">209</span> RpcRetryingCaller<AbstractResponse> caller = asyncProcess.createCaller(callable,rpcTimeout);<a name="line.209"></a> +<span class="sourceLineNo">210</span> try {<a name="line.210"></a> +<span class="sourceLineNo">211</span> if (callsInProgress != null) {<a name="line.211"></a> +<span class="sourceLineNo">212</span> callsInProgress.add(callable);<a name="line.212"></a> +<span class="sourceLineNo">213</span> }<a name="line.213"></a> +<span class="sourceLineNo">214</span> res = caller.callWithoutRetries(callable, operationTimeout);<a name="line.214"></a> +<span class="sourceLineNo">215</span> if (res == null) {<a name="line.215"></a> +<span class="sourceLineNo">216</span> // Cancelled<a name="line.216"></a> +<span class="sourceLineNo">217</span> return;<a name="line.217"></a> +<span class="sourceLineNo">218</span> }<a name="line.218"></a> +<span class="sourceLineNo">219</span> } catch (IOException e) {<a name="line.219"></a> +<span class="sourceLineNo">220</span> // The service itself failed . It may be an error coming from the communication<a name="line.220"></a> +<span class="sourceLineNo">221</span> // layer, but, as well, a functional error raised by the server.<a name="line.221"></a> +<span class="sourceLineNo">222</span> receiveGlobalFailure(multiAction, server, numAttempt, e);<a name="line.222"></a> +<span class="sourceLineNo">223</span> return;<a name="line.223"></a> +<span class="sourceLineNo">224</span> } catch (Throwable t) {<a name="line.224"></a> +<span class="sourceLineNo">225</span> // This should not happen. Let's log & retry anyway.<a name="line.225"></a> +<span class="sourceLineNo">226</span> LOG.error("#" + asyncProcess.id + ", Caught throwable while calling. This is unexpected." +<a name="line.226"></a> +<span class="sourceLineNo">227</span> " Retrying. Server is " + server + ", tableName=" + tableName, t);<a name="line.227"></a> +<span class="sourceLineNo">228</span> receiveGlobalFailure(multiAction, server, numAttempt, t);<a name="line.228"></a> +<span class="sourceLineNo">229</span> return;<a name="line.229"></a> +<span class="sourceLineNo">230</span> }<a name="line.230"></a> +<span class="sourceLineNo">231</span> if (res.type() == AbstractResponse.ResponseType.MULTI) {<a name="line.231"></a> +<span class="sourceLineNo">232</span> // Normal case: we received an answer from the server, and it's not an exception.<a name="line.232"></a> +<span class="sourceLineNo">233</span> receiveMultiAction(multiAction, server, (MultiResponse) res, numAttempt);<a name="line.233"></a> +<span class="sourceLineNo">234</span> } else {<a name="line.234"></a> +<span class="sourceLineNo">235</span> if (results != null) {<a name="line.235"></a> +<span class="sourceLineNo">236</span> SingleResponse singleResponse = (SingleResponse) res;<a name="line.236"></a> +<span class="sourceLineNo">237</span> results[0] = singleResponse.getEntry();<a name="line.237"></a> +<span class="sourceLineNo">238</span> }<a name="line.238"></a> +<span class="sourceLineNo">239</span> decActionCounter(1);<a name="line.239"></a> +<span class="sourceLineNo">240</span> }<a name="line.240"></a> +<span class="sourceLineNo">241</span> } catch (Throwable t) {<a name="line.241"></a> +<span class="sourceLineNo">242</span> // Something really bad happened. We are on the send thread that will now die.<a name="line.242"></a> +<span class="sourceLineNo">243</span> LOG.error("Internal AsyncProcess #" + asyncProcess.id + " error for "<a name="line.243"></a> +<span class="sourceLineNo">244</span> + tableName + " processing for " + server, t);<a name="line.244"></a> +<span class="sourceLineNo">245</span> throw new RuntimeException(t);<a name="line.245"></a> +<span class="sourceLineNo">246</span> } finally {<a name="line.246"></a> +<span class="sourceLineNo">247</span> asyncProcess.decTaskCounters(multiAction.getRegions(), server);<a name="line.247"></a> +<span class="sourceLineNo">248</span> if (callsInProgress != null && callable != null && res != null) {<a name="line.248"></a> +<span class="sourceLineNo">249</span> callsInProgress.remove(callable);<a name="line.249"></a> +<span class="sourceLineNo">250</span> }<a name="line.250"></a> +<span class="sourceLineNo">251</span> }<a name="line.251"></a> +<span class="sourceLineNo">252</span> }<a name="line.252"></a> +<span class="sourceLineNo">253</span> }<a name="line.253"></a> +<span class="sourceLineNo">254</span><a name="line.254"></a> +<span class="sourceLineNo">255</span> private final Batch.Callback<CResult> callback;<a name="line.255"></a> +<span class="sourceLineNo">256</span> private final BatchErrors errors;<a name="line.256"></a> +<span class="sourceLineNo">257</span> private final ConnectionImplementation.ServerErrorTracker errorsByServer;<a name="line.257"></a> +<span class="sourceLineNo">258</span> private final ExecutorService pool;<a name="line.258"></a> +<span class="sourceLineNo">259</span> private final Set<CancellableRegionServerCallable> callsInProgress;<a name="line.259"></a> <span class="sourceLineNo">260</span><a name="line.260"></a> -<span class="sourceLineNo">261</span> private final TableName tableName;<a name="line.261"></a> -<span class="sourceLineNo">262</span> private final AtomicLong actionsInProgress = new AtomicLong(-1);<a name="line.262"></a> -<span class="sourceLineNo">263</span> /**<a name="line.263"></a> -<span class="sourceLineNo">264</span> * The lock controls access to results. It is only held when populating results where<a name="line.264"></a> -<span class="sourceLineNo">265</span> * there might be several callers (eventual consistency gets). For other requests,<a name="line.265"></a> -<span class="sourceLineNo">266</span> * there's one unique call going on per result index.<a name="line.266"></a> -<span class="sourceLineNo">267</span> */<a name="line.267"></a> -<span class="sourceLineNo">268</span> private final Object replicaResultLock = new Object();<a name="line.268"></a> -<span class="sourceLineNo">269</span> /**<a name="line.269"></a> -<span class="sourceLineNo">270</span> * Result array. Null if results are not needed. Otherwise, each index corresponds to<a name="line.270"></a> -<span class="sourceLineNo">271</span> * the action index in initial actions submitted. For most request types, has null-s for<a name="line.271"></a> -<span class="sourceLineNo">272</span> * requests that are not done, and result/exception for those that are done.<a name="line.272"></a> -<span class="sourceLineNo">273</span> * For eventual-consistency gets, initially the same applies; at some point, replica calls<a name="line.273"></a> -<span class="sourceLineNo">274</span> * might be started, and ReplicaResultState is put at the corresponding indices. The<a name="line.274"></a> -<span class="sourceLineNo">275</span> * returning calls check the type to detect when this is the case. After all calls are done,<a name="line.275"></a> -<span class="sourceLineNo">276</span> * ReplicaResultState-s are replaced with results for the user.<a name="line.276"></a> -<span class="sourceLineNo">277</span> */<a name="line.277"></a> -<span class="sourceLineNo">278</span> private final Object[] results;<a name="line.278"></a> -<span class="sourceLineNo">279</span> /**<a name="line.279"></a> -<span class="sourceLineNo">280</span> * Indices of replica gets in results. 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Only<a name="line.291"></a> -<span class="sourceLineNo">292</span> * used to make logging more clear, we don't actually care why we don't retry.<a name="line.292"></a> -<span class="sourceLineNo">293</span> */<a name="line.293"></a> -<span class="sourceLineNo">294</span> public enum Retry {<a name="line.294"></a> -<span class="sourceLineNo">295</span> YES,<a name="line.295"></a> -<span class="sourceLineNo">296</span> NO_LOCATION_PROBLEM,<a name="line.296"></a> -<span class="sourceLineNo">297</span> NO_NOT_RETRIABLE,<a name="line.297"></a> -<span class="sourceLineNo">298</span> NO_RETRIES_EXHAUSTED,<a name="line.298"></a> -<span class="sourceLineNo">299</span> NO_OTHER_SUCCEEDED<a name="line.299"></a> -<span class="sourceLineNo">300</span> }<a name="line.300"></a> -<span class="sourceLineNo">301</span><a name="line.301"></a> -<span class="sourceLineNo">302</span> /** Sync point for calls to multiple replicas for the same user request (Get).<a name="line.302"></a> -<span class="sourceLineNo">303</span> * Created and put in the results array (we assume replica calls require results) when<a name="line.303"></a> -<span class="sourceLineNo">304</span> * the replica calls are launched. See results for details of this process.<a name="line.304"></a> -<span class="sourceLineNo">305</span> * POJO, all fields are public. To modify them, the object itself is locked. */<a name="line.305"></a> -<span class="sourceLineNo">306</span> private static class ReplicaResultState {<a name="line.306"></a> -<span class="sourceLineNo">307</span> public ReplicaResultState(int callCount) {<a name="line.307"></a> -<span class="sourceLineNo">308</span> this.callCount = callCount;<a name="line.308"></a> -<span class="sourceLineNo">309</span> }<a name="line.309"></a> -<span class="sourceLineNo">310</span><a name="line.310"></a> -<span class="sourceLineNo">311</span> /** Number of calls outstanding, or 0 if a call succeeded (even with others outstanding). */<a name="line.311"></a> -<span class="sourceLineNo">312</span> int callCount;<a name="line.312"></a> -<span class="sourceLineNo">313</span> /** Errors for which it is not decided whether we will report them to user. 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class="sourceLineNo">388</span> new ConcurrentHashMap<CancellableRegionServerCallable, Boolean>());<a name="line.388"></a> -<span class="sourceLineNo">389</span> this.asyncProcess = asyncProcess;<a name="line.389"></a> -<span class="sourceLineNo">390</span> this.errorsByServer = createServerErrorTracker();<a name="line.390"></a> -<span class="sourceLineNo">391</span> this.errors = (asyncProcess.globalErrors != null)<a name="line.391"></a> -<span class="sourceLineNo">392</span> ? asyncProcess.globalErrors : new BatchErrors();<a name="line.392"></a> -<span class="sourceLineNo">393</span> this.operationTimeout = task.getOperationTimeout();<a name="line.393"></a> -<span class="sourceLineNo">394</span> this.rpcTimeout = task.getRpcTimeout();<a name="line.394"></a> -<span class="sourceLineNo">395</span> this.currentCallable = task.getCallable();<a name="line.395"></a> -<span class="sourceLineNo">396</span> if (task.getCallable() == null) {<a name="line.396"></a> -<span 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class="sourceLineNo">408</span> Set<CancellableRegionServerCallable> callsInProgress) {<a name="line.408"></a> -<span class="sourceLineNo">409</span> return new SingleServerRequestRunnable(multiAction, numAttempt, server, callsInProgress);<a name="line.409"></a> -<span class="sourceLineNo">410</span> }<a name="line.410"></a> -<span class="sourceLineNo">411</span><a name="line.411"></a> -<span class="sourceLineNo">412</span> /**<a name="line.412"></a> -<span class="sourceLineNo">413</span> * Group a list of actions per region servers, and send them.<a name="line.413"></a> -<span class="sourceLineNo">414</span> *<a name="line.414"></a> -<span class="sourceLineNo">415</span> * @param currentActions - the list of row to submit<a name="line.415"></a> -<span class="sourceLineNo">416</span> * @param numAttempt - the current numAttempt (first attempt is 1)<a name="line.416"></a> -<span class="sourceLineNo">417</span> */<a name="line.417"></a> -<span class="sourceLineNo">418</span> void groupAndSendMultiAction(List<Action> currentActions, int numAttempt) {<a name="line.418"></a> -<span class="sourceLineNo">419</span> Map<ServerName, MultiAction> actionsByServer = new HashMap<>();<a name="line.419"></a> -<span class="sourceLineNo">420</span><a name="line.420"></a> -<span class="sourceLineNo">421</span> boolean isReplica = false;<a name="line.421"></a> -<span class="sourceLineNo">422</span> List<Action> unknownReplicaActions = null;<a name="line.422"></a> -<span class="sourceLineNo">423</span> for (Action action : currentActions) {<a name="line.423"></a> -<span class="sourceLineNo">424</span> RegionLocations locs = findAllLocationsOrFail(action, true);<a name="line.424"></a> -<span class="sourceLineNo">425</span> if (locs == null) continue;<a name="line.425"></a> -<span class="sourceLineNo">426</span> boolean isReplicaAction = !RegionReplicaUtil.isDefaultReplica(action.getReplicaId());<a name="line.426"></a> -<span class="sourceLineNo">427</span> if (isReplica && !isReplicaAction) {<a name="line.427"></a> -<span class="sourceLineNo">428</span> // This is the property of the current implementation, not a requirement.<a name="line.428"></a> -<span class="sourceLineNo">429</span> throw new AssertionError("Replica and non-replica actions in the same retry");<a name="line.429"></a> -<span class="sourceLineNo">430</span> }<a name="line.430"></a> -<span class="sourceLineNo">431</span> isReplica = isReplicaAction;<a name="line.431"></a> -<span class="sourceLineNo">432</span> HRegionLocation loc = locs.getRegionLocation(action.getReplicaId());<a name="line.432"></a> -<span class="sourceLineNo">433</span> if (loc == null || loc.getServerName() == null) {<a name="line.433"></a> -<span class="sourceLineNo">434</span> if (isReplica) {<a name="line.434"></a> -<span class="sourceLineNo">435</span> if (unknownReplicaActions == null) {<a name="line.435"></a> -<span class="sourceLineNo">436</span> unknownReplicaActions = new ArrayList<>(1);<a name="line.436"></a> -<span class="sourceLineNo">437</span> }<a name="line.437"></a> -<span class="sourceLineNo">438</span> unknownReplicaActions.add(action);<a name="line.438"></a> -<span class="sourceLineNo">439</span> } else {<a name="line.439"></a> -<span class="sourceLineNo">440</span> // TODO: relies on primary location always being fetched<a name="line.440"></a> -<span class="sourceLineNo">441</span> manageLocationError(action, null);<a name="line.441"></a> -<span class="sourceLineNo">442</span> }<a name="line.442"></a> -<span class="sourceLineNo">443</span> } else {<a name="line.443"></a> -<span class="sourceLineNo">444</span> byte[] regionName = loc.getRegionInfo().getRegionName();<a name="line.444"></a> -<span class="sourceLineNo">445</span> AsyncProcess.addAction(loc.getServerName(), regionName, action, actionsByServer, nonceGroup);<a name="line.445"></a> -<span class="sourceLineNo">446</span> }<a name="line.446"></a> -<span class="sourceLineNo">447</span> }<a name="line.447"></a> -<span class="sourceLineNo">448</span> boolean doStartReplica = (numAttempt == 1 && !isReplica && hasAnyReplicaGets);<a name="line.448"></a> -<span class="sourceLineNo">449</span> boolean hasUnknown = unknownReplicaActions != null && !unknownReplicaActions.isEmpty();<a name="line.449"></a> -<span class="sourceLineNo">450</span><a name="line.450"></a> -<span class="sourceLineNo">451</span> if (!actionsByServer.isEmpty()) {<a name="line.451"></a> -<span class="sourceLineNo">452</span> // If this is a first attempt to group and send, no replicas, we need replica thread.<a name="line.452"></a> -<span class="sourceLineNo">453</span> sendMultiAction(actionsByServer, numAttempt, (doStartReplica && !hasUnknown)<a name="line.453"></a> -<span class="sourceLineNo">454</span> ? currentActions : null, numAttempt > 1 && !hasUnknown);<a name="line.454"></a> -<span class="sourceLineNo">455</span> }<a name="line.455"></a> -<span class="sourceLineNo">456</span><a name="line.456"></a> -<span class="sourceLineNo">457</span> if (hasUnknown) {<a name="line.457"></a> -<span class="sourceLineNo">458</span> actionsByServer = new HashMap<>();<a name="line.458"></a> -<span class="sourceLineNo">459</span> for (Action action : unknownReplicaActions) {<a name="line.459"></a> -<span class="sourceLineNo">460</span> HRegionLocation loc = getReplicaLocationOrFail(action);<a name="line.460"></a> -<span class="sourceLineNo">461</span> if (loc == null) continue;<a name="line.461"></a> -<span class="sourceLineNo">462</span> byte[] regionName = loc.getRegionInfo().getRegionName();<a name="line.462"></a> -<span class="sourceLineNo">463</span> AsyncProcess.addAction(loc.getServerName(), regionName, action, actionsByServer, nonceGroup);<a name="line.463"></a> -<span class="sourceLineNo">464</span> }<a name="line.464"></a> -<span class="sourceLineNo">465</span> if (!actionsByServer.isEmpty()) {<a name="line.465"></a> -<span class="sourceLineNo">466</span> sendMultiAction(<a name="line.466"></a> -<span class="sourceLineNo">467</span> actionsByServer, numAttempt, doStartReplica ? currentActions : null, true);<a name="line.467"></a> -<span class="sourceLineNo">468</span> }<a name="line.468"></a> -<span class="sourceLineNo">469</span> }<a name="line.469"></a> -<span class="sourceLineNo">470</span> }<a name="line.470"></a> -<span class="sourceLineNo">471</span><a name="line.471"></a> -<span class="sourceLineNo">472</span> private HRegionLocation getReplicaLocationOrFail(Action action) {<a name="line.472"></a> -<span class="sourceLineNo">473</span> // We are going to try get location once again. 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This is unexpected." +<a name="line.554"></a> -<span class="sourceLineNo">555</span> " Server is " + server.getServerName(), t);<a name="line.555"></a> -<span class="sourceLineNo">556</span> } else {<a name="line.556"></a> -<span class="sourceLineNo">557</span> // see #HBASE-14359 for more details<a name="line.557"></a> -<span class="sourceLineNo">558</span> LOG.warn("Caught unexpected exception/error: ", t);<a name="line.558"></a> -<span class="sourceLineNo">559</span> }<a name="line.559"></a> -<span class="sourceLineNo">560</span> asyncProcess.decTaskCounters(multiAction.getRegions(), server);<a name="line.560"></a> -<span class="sourceLineNo">561</span> // We're likely to fail again, but this will increment the attempt counter,<a name="line.561"></a> -<span class="sourceLineNo">562</span> // so it will finish.<a name="line.562"></a> -<span class="sourceLineNo">563</span> receiveGlobalFailure(multiAction, server, numAttempt, t);<a name="line.563"></a> -<span class="sourceLineNo">564</span> }<a name="line.564"></a> -<span class="sourceLineNo">565</span> }<a name="line.565"></a> -<span class="sourceLineNo">566</span> }<a name="line.566"></a> -<span class="sourceLineNo">567</span> }<a name="line.567"></a> -<span class="sourceLineNo">568</span><a name="line.568"></a> -<span class="sourceLineNo">569</span> if (actionsForReplicaThread != null) {<a name="line.569"></a> -<span class="sourceLineNo">570</span> startWaitingForReplicaCalls(actionsForReplicaThread);<a name="line.570"></a> -<span class="sourceLineNo">571</span> }<a name="line.571"></a> -<span class="sourceLineNo">572</span> }<a name="line.572"></a> -<span class="sourceLineNo">573</span><a name="line.573"></a> -<span class="sourceLineNo">574</span> private Collection<? extends Runnable> getNewMultiActionRunnable(ServerName server,<a name="line.574"></a> -<span class="sourceLineNo">575</span> MultiAction multiAction,<a name="line.575"></a> -<span class="sourceLineNo">576</span> int numAttempt) {<a name="line.576"></a> -<span class="sourceLineNo">577</span> // no stats to manage, just do the standard action<a name="line.577"></a> -<span class="sourceLineNo">578</span> if (asyncProcess.connection.getStatisticsTracker() == null) {<a name="line.578"></a> -<span class="sourceLineNo">579</span> if (asyncProcess.connection.getConnectionMetrics() != null) {<a name="line.579"></a> -<span class="sourceLineNo">580</span> asyncProcess.connection.getConnectionMetrics().incrNormalRunners();<a name="line.580"></a> -<span class="sourceLineNo">581</span> }<a name="line.581"></a> -<span class="sourceLineNo">582</span> asyncProcess.incTaskCounters(multiAction.getRegions(), server);<a name="line.582"></a> -<span class="sourceLineNo">583</span> SingleServerRequestRunnable runnable = createSingleServerRequest(<a name="line.583"></a> -<span class="sourceLineNo">584</span> multiAction, numAttempt, server, callsInProgress);<a name="line.584"></a> -<span class="sourceLineNo">585</span> return Collections.singletonList(Trace.wrap("AsyncProcess.sendMultiAction", runnable));<a name="line.585"></a> -<span class="sourceLineNo">586</span> }<a name="line.586"></a> +<span class="sourceLineNo">261</span><a name="line.261"></a> +<span class="sourceLineNo">262</span> private final TableName tableName;<a name="line.262"></a> +<span class="sourceLineNo">263</span> private final AtomicLong actionsInProgress = new AtomicLong(-1);<a name="line.263"></a> +<span class="sourceLineNo">264</span> /**<a name="line.264"></a> +<span class="sourceLineNo">265</span> * The lock controls access to results. It is only held when populating results where<a name="line.265"></a> +<span class="sourceLineNo">266</span> * there might be several callers (eventual consistency gets). For other requests,<a name="line.266"></a> +<span class="sourceLineNo">267</span> * there's one unique call going on per result index.<a name="line.267"></a> +<span class="sourceLineNo">268</span> */<a name="line.268"></a> +<span class="sourceLineNo">269</span> private final Object replicaResultLock = new Object();<a name="line.269"></a> +<span class="sourceLineNo">270</span> /**<a name="line.270"></a> +<span class="sourceLineNo">271</span> * Result array. Null if results are not needed. Otherwise, each index corresponds to<a name="line.271"></a> +<span class="sourceLineNo">272</span> * the action index in initial actions submitted. 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If null, all or no actions are replica-gets.<a name="line.281"></a> +<span class="sourceLineNo">282</span> */<a name="line.282"></a> +<span class="sourceLineNo">283</span> private final int[] replicaGetIndices;<a name="line.283"></a> +<span class="sourceLineNo">284</span> private final boolean hasAnyReplicaGets;<a name="line.284"></a> +<span class="sourceLineNo">285</span> private final long nonceGroup;<a name="line.285"></a> +<span class="sourceLineNo">286</span> private final CancellableRegionServerCallable currentCallable;<a name="line.286"></a> +<span class="sourceLineNo">287</span> private final int operationTimeout;<a name="line.287"></a> +<span class="sourceLineNo">288</span> private final int rpcTimeout;<a name="line.288"></a> +<span class="sourceLineNo">289</span> private final AsyncProcess asyncProcess;<a name="line.289"></a> +<span class="sourceLineNo">290</span><a name="line.290"></a> +<span class="sourceLineNo">291</span> /**<a name="line.291"></a> +<span class="sourceLineNo">292</span> * For {@link AsyncRequestFutureImpl#manageError(int, Row, Retry, Throwable, ServerName)}. Only<a name="line.292"></a> +<span class="sourceLineNo">293</span> * used to make logging more clear, we don't actually care why we don't retry.<a name="line.293"></a> +<span class="sourceLineNo">294</span> */<a name="line.294"></a> +<span class="sourceLineNo">295</span> public enum Retry {<a name="line.295"></a> +<span class="sourceLineNo">296</span> YES,<a name="line.296"></a> +<span class="sourceLineNo">297</span> NO_LOCATION_PROBLEM,<a name="line.297"></a> +<span class="sourceLineNo">298</span> NO_NOT_RETRIABLE,<a name="line.298"></a> +<span class="sourceLineNo">299</span> NO_RETRIES_EXHAUSTED,<a name="line.299"></a> +<span class="sourceLineNo">300</span> NO_OTHER_SUCCEEDED<a name="line.300"></a> +<span class="sourceLineNo">301</span> }<a name="line.301"></a> +<span class="sourceLineNo">302</span><a name="line.302"></a> +<span class="sourceLineNo">303</span> /** Sync point for calls to multiple replicas for the same user request (Get).<a name="line.303"></a> +<span class="sourceLineNo">304</span> * Created and put in the results array (we assume replica calls require results) when<a name="line.304"></a> +<span class="sourceLineNo">305</span> * the replica calls are launched. See results for details of this process.<a name="line.305"></a> +<span class="sourceLineNo">306</span> * POJO, all fields are public. To modify them, the object itself is locked. */<a name="line.306"></a> +<span class="sourceLineNo">307</span> private static class ReplicaResultState {<a name="line.307"></a> +<span class="sourceLineNo">308</span> public ReplicaResultState(int callCount) {<a name="line.308"></a> +<span class="sourceLineNo">309</span> this.callCount = callCount;<a name="line.309"></a> +<span class="sourceLineNo">310</span> }<a name="line.310"></a> +<span class="sourceLineNo">311</span><a name="line.311"></a> +<span class="sourceLineNo">312</span> /** Number of calls outstanding, or 0 if a call succeeded (even with others outstanding). */<a name="line.312"></a> +<span class="sourceLineNo">313</span> int callCount;<a name="line.313"></a> +<span class="sourceLineNo">314</span> /** Errors for which it is not decided whether we will report them to user. If one of the<a name="line.314"></a> +<span class="sourceLineNo">315</span> * calls succeeds, we will discard the errors that may have happened in the other calls. */<a name="line.315"></a> +<span class="sourceLineNo">316</span> BatchErrors replicaErrors = null;<a name="line.316"></a> +<span class="sourceLineNo">317</span><a name="line.317"></a> +<span class="sourceLineNo">318</span> @Override<a name="line.318"></a> +<span class="sourceLineNo">319</span> public String toString() {<a name="line.319"></a> +<span class="sourceLineNo">320</span> return "[call count " + callCount + "; errors " + replicaErrors + "]";<a name="line.320"></a> +<span class="sourceLineNo">321</span> }<a name="line.321"></a> +<span class="sourceLineNo">322</span> }<a name="line.322"></a> +<span class="sourceLineNo">323</span><a name="line.323"></a> +<span class="sourceLineNo">324</span> public AsyncRequestFutureImpl(AsyncProcessTask task, List<Action> actions,<a name="line.324"></a> +<span class="sourceLineNo">325</span> long nonceGroup, AsyncProcess asyncProcess) {<a name="line.325"></a> +<span class="sourceLineNo">326</span> this.pool = task.getPool();<a name="line.326"></a> +<span class="sourceLineNo">327</span> this.callback = task.getCallback();<a name="line.327"></a> +<span class="sourceLineNo">328</span> this.nonceGroup = nonceGroup;<a name="line.328"></a> +<span class="sourceLineNo">329</span> this.tableName = task.getTableName();<a name="line.329"></a> +<span class="sourceLineNo">330</span> this.actionsInProgress.set(actions.size());<a name="line.330"></a> +<span class="sourceLineNo">331</span> if (task.getResults() == null) {<a name="line.331"></a> +<span class="sourceLineNo">332</span> results = task.getNeedResults() ? new Object[actions.size()] : null;<a name="line.332"></a> +<span class="sourceLineNo">333</span> } else {<a name="line.333"></a> +<span class="sourceLineNo">334</span> if (task.getResults().length != actions.size()) {<a name="line.334"></a> +<span class="sourceLineNo">335</span> throw new AssertionError("results.length");<a name="line.335"></a> +<span class="sourceLineNo">336</span> }<a name="line.336"></a> +<span class="sourceLineNo">337</span> this.results = task.getResults();<a name="line.337"></a> +<span class="sourceLineNo">338</span> for (int i = 0; i != this.results.length; ++i) {<a name="line.338"></a> +<span class="sourceLineNo">339</span> results[i] = null;<a name="line.339"></a> +<span class="sourceLineNo">340</span> }<a name="line.340"></a> +<span class="sourceLineNo">341</span> }<a name="line.341"></a> +<span class="sourceLineNo">342</span> List<Integer> replicaGetIndices = null;<a name="line.342"></a> +<span class="sourceLineNo">343</span> boolean hasAnyReplicaGets = false;<a name="line.343"></a> +<span class="sourceLineNo">344</span> if (results != null) {<a name="line.344"></a> +<span class="sourceLineNo">345</span> // Check to see if any requests might require replica calls.<a name="line.345"></a> +<span class="sourceLineNo">346</span> // We expect that many requests will consist of all or no multi-replica gets; in such<a name="line.346"></a> +<span class="sourceLineNo">347</span> // cases we would just use a boolean (hasAnyReplicaGets). If there's a mix, we will<a name="line.347"></a> +<span class="sourceLineNo">348</span> // store the list of action indexes for which replica gets are possible, and set<a name="line.348"></a> +<span class="sourceLineNo">349</span> // hasAnyReplicaGets to true.<a name="line.349"></a> +<span class="sourceLineNo">350</span> boolean hasAnyNonReplicaReqs = false;<a name="line.350"></a> +<span class="sourceLineNo">351</span> int posInList = 0;<a name="line.351"></a> +<span class="sourceLineNo">352</span> for (Action action : actions) {<a name="line.352"></a> +<span class="sourceLineNo">353</span> bool
<TRUNCATED>
