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https://issues.apache.org/jira/browse/YARN-1281?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13969261#comment-13969261
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Tsuyoshi OZAWA commented on YARN-1281:
--------------------------------------
Reproduced bug.
{quote}
-------------------------------------------------------------------------------
Test set:
org.apache.hadoop.yarn.server.resourcemanager.recovery.TestZKRMStateStoreZKClientConnections
-------------------------------------------------------------------------------
Tests run: 6, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 3.73 sec <<<
FAILURE! - in
org.apache.hadoop.yarn.server.resourcemanager.recovery.TestZKRMStateStoreZKClientConnections
testZKClientDisconnectAndReconnect(org.apache.hadoop.yarn.server.resourcemanager.recovery.TestZKRMStateStoreZKClientConnections)
Time elapsed: 0.174 sec <<< FAILURE!
java.lang.AssertionError: Unable to connect to server
at org.junit.Assert.fail(Assert.java:93)
at
org.apache.hadoop.ha.ClientBaseWithFixes.createClient(ClientBaseWithFixes.java:180)
at
org.apache.hadoop.yarn.server.resourcemanager.recovery.TestZKRMStateStoreZKClientConnections.access$100(TestZKRMStateStoreZKClientConnections.java:47)
{quote}
{quote}
2014-04-15 04:11:27,000 INFO [SessionTracker] server.SessionTrackerImpl
(SessionTrackerImpl.java:run(162)) - SessionTrackerImpl exited loop!
2014-04-15 04:11:27,660 INFO [Thread-2-SendThread(localhost:11221)]
zookeeper.ClientCnxn (ClientCnxn.java:logStartConnect(966)) - Opening socket
connection to server localhost/127.0.0.1:11221. Will not attempt to
authenticate using SASL (unknown error)
2014-04-15 04:11:27,661 WARN [Thread-2-SendThread(localhost:11221)]
zookeeper.ClientCnxn (ClientCnxn.java:run(1089)) - Session 0x145639514f70000
for server null, unexpected error, closing socket connection and attempting
reconnect
java.net.ConnectException: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at
sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:739)
at
org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:350)
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1068)
{quote}
I'll take a look deeper.
> TestZKRMStateStoreZKClientConnections fails intermittently
> ----------------------------------------------------------
>
> Key: YARN-1281
> URL: https://issues.apache.org/jira/browse/YARN-1281
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager
> Reporter: Karthik Kambatla
>
> The test fails intermittently - haven't been able to reproduce the failure
> deterministically.
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