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From "Dan Harvey (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-3578) TableInputFormat does not setup the configuration for HBase mapreduce jobs correctly
Date Mon, 28 Feb 2011 18:33:37 GMT

    [ https://issues.apache.org/jira/browse/HBASE-3578?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13000454#comment-13000454

Dan Harvey commented on HBASE-3578:

Thanks that should be fine, it's not a critical issue just will make things cleaner to work

For us as I didn't want to use a patched version of HBase in production with upgrading to
0.90 I've modified all our jobs to configure things as needed, but it would be great if we
didn't have to do this all the time.

> 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

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