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https://issues.apache.org/jira/browse/MAPREDUCE-3384?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Brahma Reddy Battula updated MAPREDUCE-3384:
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Attachment: MAPREDUCE-3384-004.patch
> Add warning message for underflow or overflow
> ---------------------------------------------
>
> Key: MAPREDUCE-3384
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3384
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Reporter: JiangKai
> Assignee: Brahma Reddy Battula
> Attachments: MAPREDUCE-3384-002.patch, MAPREDUCE-3384-003.patch,
> MAPREDUCE-3384-004.patch, MAPREDUCE-3384.patch
>
>
> When we call the function reduce() of LongSumReducer,the result may overflow
> or underflow.
> We should have a warning message to users if overflow/underflow occurs for
> all these classes,
> {code:xml}
> /java/org/apache/hadoop/mapred/lib/LongSumReducer.java
> .../apache/hadoop/mapreduce/lib/reduce/IntSumReducer.java
> .../apache/hadoop/mapreduce/lib/reduce/LongSumReducer.java
> .../test/java/org/apache/hadoop/fs/AccumulatingReducer.java
> .../hadoop/mapred/nativetask/kvtest/HashSumReducer.java
> {code}
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