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From "Ariel Weisberg (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-10730) periodic timeout errors in dtest
Date Tue, 24 Nov 2015 18:16:11 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-10730?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15025018#comment-15025018
] 

Ariel Weisberg commented on CASSANDRA-10730:
--------------------------------------------

OK, next debugging thought. jstack the database.

Having a dtest call to dump netstat or jstacks of the clusters is a handy thing to be able
to do from dtests anyways.

> periodic timeout errors in dtest
> --------------------------------
>
>                 Key: CASSANDRA-10730
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10730
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Jim Witschey
>            Assignee: Jim Witschey
>
> Dtests often fail with connection timeout errors. For example:
> http://cassci.datastax.com/job/cassandra-3.1_dtest/lastCompletedBuild/testReport/upgrade_tests.cql_tests/TestCQLNodes3RF3/deletion_test/
> {code}
> ('Unable to connect to any servers', {'127.0.0.1': OperationTimedOut('errors=Timed out
creating connection (10 seconds), last_host=None',)})
> {code}
> We've merged a PR to increase timeouts:
> https://github.com/riptano/cassandra-dtest/pull/663
> It doesn't look like this has improved things:
> http://cassci.datastax.com/view/cassandra-3.0/job/cassandra-3.0_dtest/363/testReport/
> Next steps here are
> * to scrape Jenkins history to see if and how the number of tests failing this way has
increased (it feels like it has). From there we can bisect over the dtests, ccm, or C*, depending
on what looks like the source of the problem.
> * to better instrument the dtest/ccm/C* startup process to see why the nodes start but
don't successfully make the CQL port available.



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