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From "Duo Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-19753) Miscellany of fixes for hbase-zookeeper tests to make them more robust
Date Thu, 11 Jan 2018 00:31:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-19753?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16321450#comment-16321450
] 

Duo Zhang commented on HBASE-19753:
-----------------------------------

The problem is that, the keepalive time is too small, that it will close the connection to
zk while we are still trying to connect to zk.

The design philosophy here is that the keep alive time is usually much greater than the operation
time. The default value is 1 minute. Here we want to test the keep alive mechanism so we set
the keep alive time to 3 seconds, which is too small for your environment. You can try up
it to see if it helps.

And it is really strange that, why a zk connecting can take even more than 3 seconds? There
must be something wrong. What's your OS sir? Linux or mac?

Thanks.

> Miscellany of fixes for hbase-zookeeper tests to make them more robust
> ----------------------------------------------------------------------
>
>                 Key: HBASE-19753
>                 URL: https://issues.apache.org/jira/browse/HBASE-19753
>             Project: HBase
>          Issue Type: Bug
>            Reporter: stack
>            Assignee: stack
>         Attachments: HBASE-19753.branch-2.001.patch
>
>
> On my cluster which slows zk, tests hbase-zookeeper rarely all pass.



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