Increase map/reduce child tasks' heapsize from current default of 200M to 512M
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Key: HADOOP-2751
URL: https://issues.apache.org/jira/browse/HADOOP-2751
Project: Hadoop Core
Issue Type: Bug
Components: mapred
Affects Versions: 0.16.0
Reporter: Arun C Murthy
Assignee: Arun C Murthy
Fix For: 0.17.0
I guess we should look to check why we get OOMs with 200M, I'd suspect
io.sort.mb hogs a lot of the default 200M. However, HADOOP-1867 should be the
right way to solve it.
For now, I propose we bump up the child-vm default heapsize to 512M; too many
people are getting burnt by 200M.
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