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From "Sergey Shelukhin (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-10242) client-side mvcc tracking in scanners
Date Sat, 28 Dec 2013 01:52:50 GMT

     [ https://issues.apache.org/jira/browse/HBASE-10242?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Sergey Shelukhin updated HBASE-10242:

    Attachment: HBASE-10241.wip0.patch

WIP patch. It already works for restricted reopen scenarios (see hack in test); for split
it doesn't work so far because server part is not implemented, so compaction does not preserve
- rig the test for splits and merges to work
- make work in reverse scanner (not needed for small scanner?)
- make the new public methods  private for now if this is to be committed before the server
part. Or they can go in together, this is not needed.

> client-side mvcc tracking in scanners
> -------------------------------------
>                 Key: HBASE-10242
>                 URL: https://issues.apache.org/jira/browse/HBASE-10242
>             Project: HBase
>          Issue Type: Sub-task
>          Components: HFile, regionserver, Scanners
>            Reporter: Sergey Shelukhin
>            Assignee: Sergey Shelukhin
>         Attachments: HBASE-10241.wip0.patch
> Scanners should be able to track mvcc read point and send it to server. This is a subtask,
so server can use this mvcc as best it can, but doesn't actually have to guarantee it within
the scope of this jira.

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