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Posted to issues@hbase.apache.org by "Sean Busbey (JIRA)" <ji...@apache.org> on 2014/07/31 03:32:39 UTC

[jira] [Commented] (HBASE-4192) Optimize HLog for Throughput Using Delayed RPCs

    [ https://issues.apache.org/jira/browse/HBASE-4192?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14080375#comment-14080375 ] 

Sean Busbey commented on HBASE-4192:
------------------------------------

Part 1 was handled via HBASE-4487. Is Part 2 OBE from the changes in HBASE-8755?

> Optimize HLog for Throughput Using Delayed RPCs
> -----------------------------------------------
>
>                 Key: HBASE-4192
>                 URL: https://issues.apache.org/jira/browse/HBASE-4192
>             Project: HBase
>          Issue Type: New Feature
>          Components: wal
>    Affects Versions: 0.92.0
>            Reporter: Vlad Dogaru
>            Priority: Minor
>
> Introduce a new HLog configuration parameter (batchEntries) for more aggressive batching of appends.  If this is enabled, HLog appends are not written to the HLog writer immediately, but batched and written either periodically or when a sync is requested.  Because sync times become larger, they use delayed RPCs to free up RPC handler threads.



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