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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-17489) ClientScanner may send a next request to a RegionScanner which has been exhausted
Date Fri, 20 Jan 2017 18:36:27 GMT

    [ https://issues.apache.org/jira/browse/HBASE-17489?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15832225#comment-15832225
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stack commented on HBASE-17489:
-------------------------------

Tried to review. I don't have much to contribute. It is hard to follow what is going on. The
patch makes valiant effort and trying to clean up. I'd say commit if it passes all tests.
Nice fix saving an RPC per scan.

> ClientScanner may send a next request to a RegionScanner which has been exhausted
> ---------------------------------------------------------------------------------
>
>                 Key: HBASE-17489
>                 URL: https://issues.apache.org/jira/browse/HBASE-17489
>             Project: HBase
>          Issue Type: Bug
>          Components: Client, scan
>    Affects Versions: 2.0.0, 1.3.0, 1.4.0
>            Reporter: Duo Zhang
>            Assignee: Duo Zhang
>            Priority: Critical
>             Fix For: 2.0.0, 1.4.0, 1.3.1
>
>         Attachments: HBASE-17489.patch, HBASE-17489-v1.patch, HBASE-17489-v2.patch, HBASE-17489-v3.patch,
HBASE-17489-v4.patch, HBASE-17489-v4.patch
>
>
> Found it when implementing HBASE-17045. Seems the final result of the scan is correct
but no doubt the logic is broken. We need to fix it to stop things get worse in the future.



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