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https://issues.apache.org/jira/browse/HBASE-4192?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13115824#comment-13115824
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Todd Lipcon commented on HBASE-4192:
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That sounds easier to review, thanks for the suggestion, dhruba.
> 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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