He Tianyi created MAPREDUCE-6757:
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Summary: Multithreaded mapper corrupts buffer pusher in nativetask
Key: MAPREDUCE-6757
URL: https://issues.apache.org/jira/browse/MAPREDUCE-6757
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: nativetask
Affects Versions: 3.0.0-alpha1
Reporter: He Tianyi
Multiple threads could be calling {{collect}} method of the same
{{NativeMapOutputCollectorDelegator}} instance at the same time. In this case,
buffer can be corrupted.
This may occur when executing Hive queries with custom script.
Adding 'synchronized' keyword to {{collect}} method would solve the problem.
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