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From "Tom White (Commented) (JIRA)" <>
Subject [jira] [Commented] (MAHOUT-950) Change BtJob to use new MultipleOutputs API
Date Thu, 19 Jan 2012 23:09:43 GMT


Tom White commented on MAHOUT-950:

As a sanity check for 0.20/1.x, I built Hadoop locally with the patch from MAPREDUCE-3607
applied and changed the version of hadoop-core in the POM to 1.1.0-SNAPSHOT. Both LocalSSVDSolverDenseTest
and LocalSSVDSolverSparseSequentialTest passed.
> Change BtJob to use new MultipleOutputs API
> -------------------------------------------
>                 Key: MAHOUT-950
>                 URL:
>             Project: Mahout
>          Issue Type: Improvement
>          Components: Math
>            Reporter: Tom White
>         Attachments: MAHOUT-950.patch
> BtJob uses a mixture of the old and new MapReduce API to allow it to use MultipleOutputs
(which isn't available in Hadoop 0.20/1.0). This fails when run against 0.23 (see MAHOUT-822),
so we should change BtJob to use the new MultipleOutputs API. (Hopefully the new MultipleOutputs
API will be made available in a 1.x release - see MAPREDUCE-3607.)

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