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https://issues.apache.org/jira/browse/HBASE-19942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16353647#comment-16353647
]
Guanghao Zhang commented on HBASE-19942:
----------------------------------------
The unit test hope start a rpc executor with 0 handler. But in
RpcExecutor.java, the numCallQueues is at least 1, so the handler count is at
least 1, too. And the default call queue type is fifo. So it will start a
FastPathBalancedQueueRpcExecutor. If the handler was already start, then the
callTask will be dispatch to the handler directly and no need add to queue.
{code}
SimpleRpcScheduler scheduler = new SimpleRpcScheduler(schedConf, 0, 0, 0,
priority,
HConstants.QOS_THRESHOLD);
{code}
this.handlerCount = Math.max(handlerCount, this.numCallQueues);
protected int computeNumCallQueues(final int handlerCount, final float
callQueuesHandlersFactor) {
return Math.max(1, Math.round(handlerCount * callQueuesHandlersFactor));
}
{code}
{code}
public boolean dispatch(CallRunner callTask) throws InterruptedException {
FastPathHandler handler = popReadyHandler();
return handler != null? handler.loadCallRunner(callTask):
super.dispatch(callTask);
}
{code}
> Fix flaky TestSimpleRpcScheduler
> --------------------------------
>
> Key: HBASE-19942
> URL: https://issues.apache.org/jira/browse/HBASE-19942
> Project: HBase
> Issue Type: Sub-task
> Reporter: Guanghao Zhang
> Priority: Major
>
> [https://builds.apache.org/view/H-L/view/HBase/job/HBase-Find-Flaky-Tests-branch2.0/lastSuccessfulBuild/artifact/dashboard.html]
>
> https://builds.apache.org/job/HBASE-Flaky-Tests-branch2.0/1387/testReport/junit/org.apache.hadoop.hbase.ipc/TestSimpleRpcScheduler/testSoftAndHardQueueLimits/
>
> h3. Stacktrace
> java.lang.AssertionError at
> org.apache.hadoop.hbase.ipc.TestSimpleRpcScheduler.testSoftAndHardQueueLimits(TestSimpleRpcScheduler.java:451)
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