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https://issues.apache.org/jira/browse/KYLIN-4305?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17000698#comment-17000698
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Xiaoxiang Yu edited comment on KYLIN-4305 at 12/20/19 7:59 AM:
---------------------------------------------------------------
After apply my patch, after load test, the receiver still in health state.
1. Load of current node has decreased to normal level.
2. Following query can be answered correctly.
3. There are no more unused thread, the jstack is clear, please check in
https://issues.apache.org/jira/secure/attachment/12989252/after_repair_receiver.jstack
was (Author: hit_lacus):
After apply my patch, the jstack is shown in
https://issues.apache.org/jira/secure/attachment/12989252/after_repair_receiver.jstack
> Streaming Receiver cannot limit income query request or cancel long-running
> query
> ---------------------------------------------------------------------------------
>
> Key: KYLIN-4305
> URL: https://issues.apache.org/jira/browse/KYLIN-4305
> Project: Kylin
> Issue Type: Improvement
> Components: Real-time Streaming
> Reporter: Xiaoxiang Yu
> Priority: Major
> Attachments: Jietu20191217-221025.png, after_repair_receiver.jstack,
> image-2019-12-17-22-12-01-098.png, streaming_receiver_jstack.log
>
>
> When under heavy load(high rate of query request), receiver can not stand it,
> and most quey may timeout, but the query processing thread cannot be
> cancelled in receiver side, which will cause receiver's crash. You have to
> restart it.
> kylin.log
> {code:java}
> Caused by: java.lang.RuntimeException: timeout when call stream rpc
> at
> org.apache.kylin.storage.stream.rpc.HttpStreamDataSearchClient$QueuedStreamingTupleIterator.hasNext(HttpStreamDataSearchClient.java:298)
> at com.google.common.collect.Iterators$5.hasNext(Iterators.java:596)
> at
> org.apache.kylin.metadata.tuple.CompoundTupleIterator.hasNext(CompoundTupleIterator.java:52)
> at
> org.apache.kylin.query.enumerator.OLAPEnumerator.moveNext(OLAPEnumerator.java:63)
> at Baz$1$1.moveNext(Unknown Source)
> at
> org.apache.calcite.linq4j.EnumerableDefaults.groupBy_(EnumerableDefaults.java:825)
> at
> org.apache.calcite.linq4j.EnumerableDefaults.groupBy(EnumerableDefaults.java:761)
> at
> org.apache.calcite.linq4j.DefaultEnumerable.groupBy(DefaultEnumerable.java:302)
> at Baz.bind(Unknown Source)
> at
> org.apache.calcite.jdbc.CalcitePrepare$CalciteSignature.enumerable(CalcitePrepare.java:365)
> at
> org.apache.calcite.jdbc.CalciteConnectionImpl.enumerable(CalciteConnectionImpl.java:301)
> at
> org.apache.calcite.jdbc.CalciteMetaImpl._createIterable(CalciteMetaImpl.java:559)
> at
> org.apache.calcite.jdbc.CalciteMetaImpl.createIterable(CalciteMetaImpl.java:550)
> at
> org.apache.calcite.avatica.AvaticaResultSet.execute(AvaticaResultSet.java:182)
> at
> org.apache.calcite.jdbc.CalciteResultSet.execute(CalciteResultSet.java:67)
> at
> org.apache.calcite.jdbc.CalciteResultSet.execute(CalciteResultSet.java:44)
> at
> org.apache.calcite.avatica.AvaticaConnection$1.execute(AvaticaConnection.java:667)
> at
> org.apache.calcite.jdbc.CalciteMetaImpl.prepareAndExecute(CalciteMetaImpl.java:619)
> at
> org.apache.calcite.avatica.AvaticaConnection.prepareAndExecuteInternal(AvaticaConnection.java:675)
> at
> org.apache.calcite.avatica.AvaticaStatement.executeInternal(AvaticaStatement.java:156)
> ... 83 more
> {code}
> jstack
> {code:java}
> "qtp1901663135-48" #48 prio=5 os_prio=0 tid=0x00007f839995f800 nid=0x3cdd
> runnable [0x00007f83674fe000]
> java.lang.Thread.State: RUNNABLE
> at java.lang.Thread.yield(Native Method)
> at
> org.apache.kylin.stream.core.query.MultiThreadsResultCollector$1.hasNext(MultiThreadsResultCollector.java:75)
> at
> org.apache.kylin.stream.core.query.RecordsAggregator.aggregate(RecordsAggregator.java:100)
> at
> org.apache.kylin.stream.core.query.StreamingCubeDataSearcher$StreamAggregateSearchResult.iterator(StreamingCubeDataSearcher.java:191)
> at
> org.apache.kylin.stream.server.rest.controller.DataController.query(DataController.java:119)
> at sun.reflect.GeneratedMethodAccessor87.invoke(Unknown Source)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at
> org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205)
> at
> org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:133)
> at
> org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:97)
> at
> org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827)
> at
> org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738)
> at
> org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
> at
> org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:967)
> at
> org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:901)
> at
> org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
> at
> org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
> at
> org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
> at
> org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:848)
> at
> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:584)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1180)
> at
> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:512)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1112)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
> at
> org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:213)
> at
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134)
> at org.eclipse.jetty.server.Server.handle(Server.java:534)
> at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:333)
> at
> org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:251)
> at
> org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:283)
> at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:108)
> at
> org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:93)
> at
> org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:303)
> at
> org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148)
> at
> org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)
> at java.lang.Thread.run(Thread.java:748)
> {code}
> {code}
> [root@cdh-worker-1 apache-kylin-3.0.0-SNAPSHOT-bin]# jstack 15512 | grep
> org.apache.kylin.stream.core.query.MultiThreadsResultCollector | wc -l
> 81
> {code}
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