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From "Jean-Daniel Cryans (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HBASE-2353) HBASE-2283 removed bulk sync optimization for multi-row puts
Date Tue, 04 May 2010 23:50:11 GMT

     [ https://issues.apache.org/jira/browse/HBASE-2353?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jean-Daniel Cryans updated HBASE-2353:
--------------------------------------

    Attachment:     (was: HBASE-2353-deferred.txt)

> 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
>            Priority: Blocker
>             Fix For: 0.20.5, 0.21.0
>
>         Attachments: HBASE-2353_def_log_flush.patch
>
>
> 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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