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From "Lars Hofhansl (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5153) Add retry logic in HConnectionImplementation#resetZooKeeperTrackers
Date Fri, 27 Jan 2012 16:44:10 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5153?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13194904#comment-13194904

Lars Hofhansl commented on HBASE-5153:

+1 on addendum. Technically we should change ZooKeeperNodeTracker.start back to be void, but
that is not necessary.
I'll update the trunk patch soon.
> Add retry logic in HConnectionImplementation#resetZooKeeperTrackers
> -------------------------------------------------------------------
>                 Key: HBASE-5153
>                 URL: https://issues.apache.org/jira/browse/HBASE-5153
>             Project: HBase
>          Issue Type: Bug
>          Components: client
>    Affects Versions: 0.90.4
>            Reporter: Jieshan Bean
>            Assignee: Jieshan Bean
>             Fix For: 0.94.0, 0.90.6, 0.92.1
>         Attachments: 5153-92.txt, 5153-trunk-v2.txt, 5153-trunk.txt, 5153-trunk.txt,
HBASE-5153-V2.patch, HBASE-5153-V3.patch, HBASE-5153-V4-90.patch, HBASE-5153-V5-90.patch,
HBASE-5153-V6-90-minorchange.patch, HBASE-5153-V6-90.txt, HBASE-5153-trunk-v2.patch, HBASE-5153-trunk.patch,
HBASE-5153.patch, HBase-5153-90-addendum.patch, TestResults-hbase5153.out
> HBASE-4893 is related to this issue. In that issue, we know, if multi-threads share a
same connection, once this connection got abort in one thread, the other threads will got
a "HConnectionManager$HConnectionImplementation@18fb1f7 closed" exception.
> It solve the problem of "stale connection can't removed". But the orignal HTable instance
cann't be continue to use. The connection in HTable should be recreated.
> Actually, there's two aproach to solve this:
> 1. In user code, once catch an IOE, close connection and re-create HTable instance. We
can use this as a workaround.
> 2. In HBase Client side, catch this exception, and re-create connection.

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