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https://issues.apache.org/jira/browse/HBASE-3578?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13018633#comment-13018633
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Dave Latham commented on HBASE-3578:
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We ran into this problem also, upgrading from 0.20 to 0.90. I think it would
make sense to be in the branch so that it breaks fewer jobs migrating to 0.90.
> TableInputFormat does not setup the configuration for HBase mapreduce jobs
> correctly
> ------------------------------------------------------------------------------------
>
> Key: HBASE-3578
> URL: https://issues.apache.org/jira/browse/HBASE-3578
> Project: HBase
> Issue Type: Bug
> Components: mapreduce
> Affects Versions: 0.90.0, 0.90.1
> Reporter: Dan Harvey
> Assignee: Dan Harvey
> Fix For: 0.92.0
>
> Attachments: mapreduce_configuration.patch
>
>
> In 0.20.x and earlier TableMapReduceUtil (and other Input/OutputFormat
> classes) used to setup the HTable with a HBaseConfiguration object, now that
> has been deprecated in #HBASE-2036 they are constructed with Hadoop
> configuration objects which do not contain the configuration xml file
> resources required to setup HBase. I think it is currently expected this is
> done when constructing the job but as this needs to be done for every HBase
> mapreduce job it would be cleaner if the TableMapReduceUtil class did this
> whilst setting up the TableInput/OutputFormat classes.
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