Andrzej Bialecki created SOLR-12075:
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Summary: TestLargeCluster is too flaky
Key: SOLR-12075
URL: https://issues.apache.org/jira/browse/SOLR-12075
Project: Solr
Issue Type: Bug
Security Level: Public (Default Security Level. Issues are Public)
Components: AutoScaling
Reporter: Andrzej Bialecki
Assignee: Andrzej Bialecki
This test is failing a lot in jenkins builds, with two types of failures:
* specific test method failures - this may be caused by either bugs in the
autoscaling code, bugs in the simulator or timing issues. It should be possible
to narrow down the cause by using different speeds of simulated time.
* suite-level failures due to leaked threads - most of these failures indicate
the ongoing Policy calculations, eg:
{code}
com.carrotsearch.randomizedtesting.ThreadLeakError: 1 thread leaked from SUITE
scope at org.apache.solr.cloud.autoscaling.sim.TestLargeCluster:
1) Thread[id=21406, name=AutoscalingActionExecutor-7277-thread-1,
state=RUNNABLE, group=TGRP-TestLargeCluster]
at java.util.ArrayList.iterator(ArrayList.java:834)
at org.apache.solr.common.util.Utils.getDeepCopy(Utils.java:131)
at org.apache.solr.common.util.Utils.makeDeepCopy(Utils.java:110)
at org.apache.solr.common.util.Utils.getDeepCopy(Utils.java:92)
at org.apache.solr.common.util.Utils.makeDeepCopy(Utils.java:108)
at org.apache.solr.common.util.Utils.getDeepCopy(Utils.java:92)
at org.apache.solr.common.util.Utils.getDeepCopy(Utils.java:74)
at org.apache.solr.client.solrj.cloud.autoscaling.Row.copy(Row.java:91)
at
org.apache.solr.client.solrj.cloud.autoscaling.Policy$Session.lambda$getMatrixCopy$1(Policy.java:297)
at
org.apache.solr.client.solrj.cloud.autoscaling.Policy$Session$$Lambda$466/1757323495.apply(Unknown
Source)
at
java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
at
java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1374)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
at
java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
at
java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
at
org.apache.solr.client.solrj.cloud.autoscaling.Policy$Session.getMatrixCopy(Policy.java:298)
at
org.apache.solr.client.solrj.cloud.autoscaling.Policy$Session.copy(Policy.java:287)
at
org.apache.solr.client.solrj.cloud.autoscaling.Row.removeReplica(Row.java:156)
at
org.apache.solr.client.solrj.cloud.autoscaling.MoveReplicaSuggester.tryEachNode(MoveReplicaSuggester.java:60)
at
org.apache.solr.client.solrj.cloud.autoscaling.MoveReplicaSuggester.init(MoveReplicaSuggester.java:34)
at
org.apache.solr.client.solrj.cloud.autoscaling.Suggester.getSuggestion(Suggester.java:129)
at
org.apache.solr.cloud.autoscaling.ComputePlanAction.process(ComputePlanAction.java:98)
at
org.apache.solr.cloud.autoscaling.ScheduledTriggers.lambda$null$3(ScheduledTriggers.java:307)
at
org.apache.solr.cloud.autoscaling.ScheduledTriggers$$Lambda$439/951218654.run(Unknown
Source)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:188)
at
org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor$$Lambda$9/1677458082.run(Unknown
Source)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
at __randomizedtesting.SeedInfo.seed([C6FA0364D13DAFCC]:0)
{code}
It's possible that somewhere an InterruptedException is caught and not
propagated so that the Policy calculations don't terminate when the thread is
interrupted when closing parent components.
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