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From "Duo Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-18905) Allow CPs to request flush/compaction on Region
Date Fri, 29 Sep 2017 06:18:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-18905?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16185400#comment-16185400
] 

Duo Zhang commented on HBASE-18905:
-----------------------------------

If we have a tracker then return a Future is not necessary I think. Just add a method to Tracker
is enough?

And I'm still not familiar with the usage of Phoenix. The method we care about is waitForFlushesAndCompactions,
the meaning is not the same with waiting for one specific flush/compaction to finish. We'd
better find out the real usage first before making any decision?

Thanks.

> Allow CPs to request flush/compaction on Region
> -----------------------------------------------
>
>                 Key: HBASE-18905
>                 URL: https://issues.apache.org/jira/browse/HBASE-18905
>             Project: HBase
>          Issue Type: Sub-task
>          Components: Coprocessors
>            Reporter: Anoop Sam John
>            Assignee: Anoop Sam John
>             Fix For: 2.0.0-alpha-4
>
>
> Follow up for HBASE-18183
> As per that Jira, we keep only requestCompaction API in Region.  We did not have any
such for flush in Region.  Only API which was there is a flush which will block the callee
unless flush is done. This issue has to tacke
> 1. Decide whether we need a requestFlush in Region and if so add
> 2. Whether the requestCompaction (And requestFlush too) should return a Future?  Right
now the former do  not return any but allow to pass a CompactionLifeCycleTracker which will
get notified on start and end of compaction.



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