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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-2353) HBASE-2283 removed bulk commit optimization
Date Mon, 22 Mar 2010 08:32:27 GMT

    [ https://issues.apache.org/jira/browse/HBASE-2353?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12848059#action_12848059
] 

Andrew Purtell commented on HBASE-2353:
---------------------------------------

I believe this also affects 0.20 branch as both group commit and 2283 were backported, so
2283 would have clobbered group commit on branch also.

> HBASE-2283 removed bulk commit optimization
> -------------------------------------------
>
>                 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
>
>
> 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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