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https://issues.apache.org/jira/browse/MAPREDUCE-3715?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13192080#comment-13192080
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Harsh J commented on MAPREDUCE-3715:
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Yeah we should document that the hosts won't be serialized. If anyone wishes to
serialize hosts they'll have to extend and enhance the class to do so, or write
their own complete implementation.
Would you like to contribute a doc fix for this?
> FileSplit's Writable implementation discards hosts information
> --------------------------------------------------------------
>
> Key: MAPREDUCE-3715
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3715
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 0.20.2, 1.0.0
> Reporter: Pavel Podgoretsky
> Priority: Minor
>
> org.apache.hadoop.mapreduce.lib.input.FileSplit's write() does not write out
> hosts, and readFields() sets them to null.
> If this is intended then it should be documented very clearly. But it looks
> more like an oversight to me.
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