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https://issues.apache.org/jira/browse/HBASE-7747?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13588636#comment-13588636
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Nick Dimiduk commented on HBASE-7747:
-------------------------------------
[~lhofhansl] I want the \*SortReducers gone. There's no reason to have them
when Hadoop is a perfectly capable sorting machine. They impose an artificial
limit on any job they touch.
> Import tools should use a combiner to merge Puts
> ------------------------------------------------
>
> Key: HBASE-7747
> URL: https://issues.apache.org/jira/browse/HBASE-7747
> Project: HBase
> Issue Type: Improvement
> Components: mapreduce, Performance
> Reporter: Nick Dimiduk
> Assignee: Nick Dimiduk
> Priority: Minor
> Fix For: 0.95.0, 0.98.0
>
> Attachments:
> 0001-HBASE-7747-Import-use-a-Put-combiner-where-possible.patch,
> 0001-HBASE-7747-Import-use-a-Put-combiner-where-possible.patch
>
>
> Multiple Puts to the same row should be combined into a single mutation
> object. This can be done with a Combiner. Import.Importer#writeResult appears
> to do this manually.
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