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https://issues.apache.org/jira/browse/HADOOP-5454?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tom White updated HADOOP-5454:
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Affects Version/s: 0.19.1
Fix Version/s: (was: 0.19.2)
> SortedMapWritable: readFields() will not clear values before deserialization
> ----------------------------------------------------------------------------
>
> Key: HADOOP-5454
> URL: https://issues.apache.org/jira/browse/HADOOP-5454
> Project: Hadoop Common
> Issue Type: Bug
> Affects Versions: 0.19.1
> Reporter: Stefan Podkowinski
>
> In case SortedMapWritable is used as value in a reducer, the user must
> explicitly call clear() on the map between iterating values. This is because
> SortedMapWritable will be reused once instantiated, but consecutive calls to
> readFields() will not reset the maps internal state, as e.g. done by
> MapWritable. Please add this.instance.clear(); on top of readFields().
> You may also want to consider HADOOP-5028 for fixing another issue with this
> class.
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