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https://issues.apache.org/jira/browse/PIG-1825?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12989436#comment-12989436
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Dmitriy V. Ryaboy commented on PIG-1825:
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Sounds fine to me (though I haven't read the patch yet).
HBase 0.90 has significant speed improvements but I imagine it still writes a
WAL and you can still turn it off.
> ability to turn off the write ahead log for pig's HBaseStorage
> --------------------------------------------------------------
>
> Key: PIG-1825
> URL: https://issues.apache.org/jira/browse/PIG-1825
> Project: Pig
> Issue Type: Improvement
> Affects Versions: 0.8.0
> Reporter: Corbin Hoenes
> Priority: Minor
> Fix For: 0.8.0
>
> Attachments: HBaseStorage_noWAL.patch
>
>
> Added an option to allow a caller of HBaseStorage to turn off the
> WriteAheadLog feature while doing bulk loads into hbase.
> From the performance tuning wikipage:
> http://wiki.apache.org/hadoop/PerformanceTuning
> "To speed up the inserts in a non critical job (like an import job), you can
> use Put.writeToWAL(false) to bypass writing to the write ahead log."
> We've tested this on HBase 0.20.6 and it helps dramatically.
> The -noWAL options is passed in just like other options for hbase storage:
> STORE myalias INTO 'MyTable' USING
> org.apache.pig.backend.hadoop.hbase.HBaseStorage('mycolumnfamily:field1
> mycolumnfamily:field2','-noWAL');
> This would be my first patch so please educate me with any steps I need to
> do.
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