You are viewing a plain text version of this content. The canonical link for it is here.

Posted to issues@hbase.apache.org by "Ray Mattingly (Jira)" <ji...@apache.org> on 2023/02/15 13:28:00 UTC

[jira] [Assigned] (HBASE-26874) VerifyReplication recompare async

     [ https://issues.apache.org/jira/browse/HBASE-26874?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ray Mattingly reassigned HBASE-26874:
-------------------------------------

    Assignee: Hernan Gelaf-Romer  (was: Ray Mattingly)

> VerifyReplication recompare async
> ---------------------------------
>
>                 Key: HBASE-26874
>                 URL: https://issues.apache.org/jira/browse/HBASE-26874
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Bryan Beaudreault
>            Assignee: Hernan Gelaf-Romer
>            Priority: Major
>
> VerifyReplication includes an option "sleepMsBeforeReCompare". This is useful for helping work around replication lag. However, adding a sleep in a hadoop job can drastically slow that job down if there is anything more than a small number of invalid results.
> We can mitigate this by doing the recompare in a separate thread. We can limit the thread pool and fallback to doing the recompare in the main thread if the thread pool is full. This way we offload some of the slowness but still retain the same validation guarantees. A configuration can be added to control how many threads per mapper.



--
This message was sent by Atlassian Jira
(v8.20.10#820010)