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From "Samarth Jain (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (PHOENIX-1261) Update stats table asynchronously
Date Tue, 22 Dec 2015 21:12:46 GMT

     [ https://issues.apache.org/jira/browse/PHOENIX-1261?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Samarth Jain updated PHOENIX-1261:
----------------------------------
    Attachment: PHOENIX-1261_98_v2.patch

Patch for 4.x-0.98 branch.

> Update stats table asynchronously
> ---------------------------------
>
>                 Key: PHOENIX-1261
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-1261
>             Project: Phoenix
>          Issue Type: Sub-task
>            Reporter: James Taylor
>            Assignee: Samarth Jain
>             Fix For: 4.7.0
>
>         Attachments: 1261-wip.patch, PHOENIX-1261_98_v2.patch, PHOENIX-1261_master.patch,
PHOENIX-1261_master_v2.patch
>
>
> Instead of writing the the stats table directly in the thread performing major compaction,
we should instead write to it asynchronously, perhaps using the same asynchronous mechanism
used by tracing. Apparently HBase used to have a "custodian" table where they'd write as compaction
and other background tasks were running, and this leads to bad things happening if the table
being written to can't be reached.



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