Details
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Bug
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Status: Open
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Major
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Resolution: Unresolved
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3.3.4
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None
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None
Description
In the conf file mapred-default.xml, the description of mapreduce.job.maxtaskfailures.per.tracker is:
The number of task-failures on a node manager of a given job after which new tasks of that job aren't assigned to it. It MUST be less than mapreduce.map.maxattempts and mapreduce.reduce.maxattempts otherwise the failed task will never be tried on a different node.
However, there is no checking implement in source code. Violations of the dependency will prevent failed tasks from trying on different nodes. So, it is suggested to check the dependency of the two configuration parameters before using maxtaskfailures.per.tracker.