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From "Shengsheng Huang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-6372) Add scanner batching to Export job
Date Tue, 31 Jul 2012 08:34:35 GMT

     [ https://issues.apache.org/jira/browse/HBASE-6372?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Shengsheng Huang updated HBASE-6372:
------------------------------------

    Attachment: HBASE-6372.2.patch

Modified patch according to @Jonathan's suggestion. Also removed the formatting issue as @stack
indicates.
                
> Add scanner batching to Export job
> ----------------------------------
>
>                 Key: HBASE-6372
>                 URL: https://issues.apache.org/jira/browse/HBASE-6372
>             Project: HBase
>          Issue Type: Improvement
>          Components: mapreduce
>    Affects Versions: 0.96.0, 0.94.2
>            Reporter: Lars George
>            Assignee: Shengsheng Huang
>            Priority: Minor
>              Labels: newbie
>         Attachments: HBASE-6372.2.patch, HBASE-6372.patch
>
>
> When a single row is too large for the RS heap then an OOME can take out the entire RS.
Setting scanner batching in custom scans helps avoiding this scenario, but for the supplied
Export job this is not set.
> Similar to HBASE-3421 we can set the batching to a low number - or if needed make it
a command line option.

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