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From "Anoop Sam John (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-18906) Provide Region#waitForFlushes API
Date Thu, 26 Oct 2017 07:35:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-18906?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16220100#comment-16220100
] 

Anoop Sam John commented on HBASE-18906:
----------------------------------------

I will change it to return a boolean.  True means the wait has completed with flushes finished.
False otherwise.  No InterruptedException when the max wait period elapsed.

> Provide Region#waitForFlushes API
> ---------------------------------
>
>                 Key: HBASE-18906
>                 URL: https://issues.apache.org/jira/browse/HBASE-18906
>             Project: HBase
>          Issue Type: Sub-task
>          Components: Coprocessors
>            Reporter: Anoop Sam John
>            Assignee: Anoop Sam John
>             Fix For: 2.0.0-alpha-4
>
>         Attachments: HBASE-18906.patch
>
>
> Expose an API for the CPs to wait for all on going flushes in a Region. The API should
support taking a time out.
> Background
> While reviewing HBASE-18183, Andy pointed out that Phoenix uses waitForFlushesAndCompactions
and/or waitForFlushes for diff reasons.  This issue is to see why they need them and whether
alternate ways are possible. This seems to be too much internal stuff and a normal CP hook
calling these would be dangerous.
> If there are alternate ways for Phoenix not to use this and not landing in issues (As
said by Andy) we should suggest/fix for them.



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