[jira] [Commented] (HBASE-5974) Scanner retry behavior with RPC timeout on next() seems incorrect

["Liu Shaohui (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-5974?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14131264#comment-14131264 ] 

Liu Shaohui commented on HBASE-5974:
------------------------------------

[~lhofhansl]
This is a critical bug in scan in 0.94. We should fix it in 0.94.
What's your suggestion?
Thanks  

> Scanner retry behavior with RPC timeout on next() seems incorrect
> -----------------------------------------------------------------
>
>                 Key: HBASE-5974
>                 URL: https://issues.apache.org/jira/browse/HBASE-5974
>             Project: HBase
>          Issue Type: Bug
>          Components: Client, regionserver
>    Affects Versions: 0.90.7, 0.92.1, 0.94.0, 0.95.2
>            Reporter: Todd Lipcon
>            Assignee: Anoop Sam John
>            Priority: Critical
>             Fix For: 0.95.0
>
>         Attachments: 5974_94-V4.patch, 5974_trunk-V2.patch, 5974_trunk-V3.patch, 5974_trunk.patch, HBASE-5974_0.94.patch, HBASE-5974_94-V2.patch, HBASE-5974_94-V3.patch
>
>
> I'm seeing the following behavior:
> - set RPC timeout to a short value
> - call next() for some batch of rows, big enough so the client times out before the result is returned
> - the HConnectionManager stuff will retry the next() call to the same server. At this point, one of two things can happen: 1) the previous next() call will still be processing, in which case you get a LeaseException, because it was removed from the map during the processing, or 2) the next() call will succeed but skip the prior batch of rows.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)