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From "Anoop Sam John (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-17167) Pass mvcc to client when scan
Date Fri, 25 Nov 2016 16:18:58 GMT

    [ https://issues.apache.org/jira/browse/HBASE-17167?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15696215#comment-15696215
] 

Anoop Sam John commented on HBASE-17167:
----------------------------------------

hmm..  So because of diff reasons, we are coming to a need to keep mvcc for ever (?)  There
is another jira also.

> Pass mvcc to client when scan
> -----------------------------
>
>                 Key: HBASE-17167
>                 URL: https://issues.apache.org/jira/browse/HBASE-17167
>             Project: HBase
>          Issue Type: Sub-task
>          Components: Client, scan
>            Reporter: Duo Zhang
>            Assignee: Duo Zhang
>             Fix For: 2.0.0, 1.4.0
>
>         Attachments: HBASE-17167.patch
>
>
> For the current implementation, if we use batch or allowPartial when scan, then the row
level atomic can not be guaranteed if we need to restart a scan in the middle of a record
due to region move or something else.
> We can return the mvcc used to open scanner to client and client could use this mvcc
to restart a scan to get row level atomic.



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