[jira] [Updated] (HBASE-24578) [WAL] Add a parameter to config RingBufferEventHandler's SyncFuture count

["Reid Chan (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-24578?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Reid Chan updated HBASE-24578:
------------------------------
    Component/s: wal

> [WAL] Add a parameter to config RingBufferEventHandler's SyncFuture count
> -------------------------------------------------------------------------
>
>                 Key: HBASE-24578
>                 URL: https://issues.apache.org/jira/browse/HBASE-24578
>             Project: HBase
>          Issue Type: Improvement
>          Components: wal
>            Reporter: Reid Chan
>            Priority: Major
>
> The current value is the value of {{hbase.regionserver.handler.count}}, which works good in default wal provider --- one WAL per regionserver.
> When I tried to use WAL group provider, either by group or wal per region, the default value was bad. If rs has 100 regions I use wal per region strategy, then rs will allocate 100 * SyncFuture[$hbase.regionserver.handler.count] array
> {code}
> int maxHandlersCount = conf.getInt(HConstants.REGION_SERVER_HANDLER_COUNT, 200);
>     this.ringBufferEventHandler = new RingBufferEventHandler(
>         conf.getInt("hbase.regionserver.hlog.syncer.count", 5), maxHandlersCount); 
> ...
> ----
> RingBufferEventHandler(final int syncRunnerCount, final int maxHandlersCount) {
>       this.syncFutures = new SyncFuture[maxHandlersCount];
>       ...
>  }
> {code} 



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