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https://issues.apache.org/jira/browse/MAPREDUCE-5159?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zhijie Shen updated MAPREDUCE-5159:
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Attachment: MAPREDUCE-5159.1.patch
In the patch, I've added the functions that
mapred.lib.aggregate.ValueAggregateJob has in hadoop 1.x, but it doesn't have
in hadoop 2.x back to the class.
I've done the binary compatibility tests locally. Both aggregatewordcount and
aggregatewordhist work without exceptions. The issue described in
MAPREDUCE-5160 is gone as well.
> Aggregatewordcount and aggregatewordhist in hadoop-1 examples are not binary
> compatible with hadoop-2 mapred.lib.aggregate
> --------------------------------------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-5159
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5159
> Project: Hadoop Map/Reduce
> Issue Type: Sub-task
> Reporter: Zhijie Shen
> Assignee: Zhijie Shen
> Attachments: MAPREDUCE-5159.1.patch
>
>
> Both examples in hadoop-1 use
> org.apache.hadoop.mapred.lib.aggregate.ValueAggregatorJob.createValueAggregatorJob(String
> args[], Class<?> caller), which no longer exists after upgrading to
> hadoop-2. Therefore, they cannot not find the accordant function with their
> function signature in the binary.
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