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https://issues.apache.org/jira/browse/HBASE-13897?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14588341#comment-14588341
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Nick Dimiduk commented on HBASE-13897:
--------------------------------------

I believe I've discussed this with others ([~lhofhansl]?) in the past -- better 
to always use MR sort and be rid of these sorting reducers all together.

> OOM occurs when Import  importing a row that including too much KeyValue
> ------------------------------------------------------------------------
>
>                 Key: HBASE-13897
>                 URL: https://issues.apache.org/jira/browse/HBASE-13897
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.98.13
>            Reporter: Liu Junhong
>            Assignee: Ted Yu
>             Fix For: 0.98.13
>
>         Attachments: HBASE-13897-0.98.patch
>
>
> When importing a row with too many KeyValues (may have too many columns or 
> versions),KeyValueReducer will incur OOM.



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