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https://issues.apache.org/jira/browse/HBASE-2353?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12849409#action_12849409
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Todd Lipcon commented on HBASE-2353:
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We've derailed this JIRA a fair amount, but I'll add to the pile. One solution
might be to ship with example configurations, one for speed, one for
correctness, and let users pick at setup time which they want to base their
-site off of.
> HBASE-2283 removed bulk sync optimization for multi-row puts
> ------------------------------------------------------------
>
> Key: HBASE-2353
> URL: https://issues.apache.org/jira/browse/HBASE-2353
> Project: Hadoop HBase
> Issue Type: Bug
> Reporter: ryan rawson
> Fix For: 0.21.0
>
> Attachments: HBASE-2353-deferred.txt
>
>
> previously to HBASE-2283 we used to call flush/sync once per put(Put[]) call
> (ie: batch of commits). Now we do for every row.
> This makes bulk uploads slower if you are using WAL. Is there an acceptable
> solution to achieve both safety and performance by bulk-sync'ing puts? Or
> would this not work in face of atomic guarantees?
> discuss!
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