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From "Nick Dimiduk (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-12403) IntegrationTestMTTR flaky due to aggressive RS restart timeout
Date Fri, 31 Oct 2014 23:34:33 GMT
Nick Dimiduk created HBASE-12403:

             Summary: IntegrationTestMTTR flaky due to aggressive RS restart timeout
                 Key: HBASE-12403
                 URL: https://issues.apache.org/jira/browse/HBASE-12403
             Project: HBase
          Issue Type: Test
          Components: integration tests
            Reporter: Nick Dimiduk
            Priority: Minor

TL;DR: the CM RestartRS action timeout is only 60 seconds. Considering the RS must connect
to the Master before it can be online, this is not long enough time in an environment where
the Master can also be killed.

Failure from the console says the test failed because a RestartRsHoldingMetaAction timed out.

Caused by: java.io.IOException: did timeout waiting for region server to start:ip-172-31-42-248.ec2.internal
at org.apache.hadoop.hbase.HBaseCluster.waitForRegionServerToStart(HBaseCluster.java:153)
at org.apache.hadoop.hbase.chaos.actions.Action.startRs(Action.java:93)
at org.apache.hadoop.hbase.chaos.actions.RestartActionBaseAction.restartRs(RestartActionBaseAction.java:52)
at org.apache.hadoop.hbase.chaos.actions.RestartRsHoldingMetaAction.perform(RestartRsHoldingMetaAction.java:38)
at org.apache.hadoop.hbase.mttr.IntegrationTestMTTR$ActionCallable.call(IntegrationTestMTTR.java:559)
at org.apache.hadoop.hbase.mttr.IntegrationTestMTTR$ActionCallable.call(IntegrationTestMTTR.java:550)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)

This is only reported at the end of the test run. There's no indication as to when during
the test run this failure happened. The timeout on the start RS operation is 60 seconds.

Hacking out the start/stop messages from the logs during the time window when this test ran,
it appears that at one point the RS took 2min 12s between when it was launched and when it
reported for duty

Fri Oct 31 14:53:17 UTC 2014 Starting regionserver on ip-172-31-42-248
2014-10-31 14:55:29,049 INFO  [regionserver60020] regionserver.HRegionServer: Serving as ip-172-31-42-248.ec2.internal,60020,1414767238992,
RpcServer on ip-172-31-42-248.ec2.internal/, sessionid=0x249661c2b7b0118

The RS came up without incident. It spent 1min 4s of that time waiting on the master to start,
attempted to report for duty from 14:54:28 to 14:55:24.

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