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From "Ashutosh Chauhan (JIRA)" <j...@apache.org>
Subject [jira] Created: (PIG-1348) InternalCachedBag running out of memory
Date Thu, 01 Apr 2010 19:11:31 GMT
InternalCachedBag running out of memory
---------------------------------------

                 Key: PIG-1348
                 URL: https://issues.apache.org/jira/browse/PIG-1348
             Project: Pig
          Issue Type: Bug
          Components: impl
    Affects Versions: 0.7.0
            Reporter: Ashutosh Chauhan
            Assignee: Richard Ding


InternalCachedBag makes estimate of memory available to the VM by using Runtime.getRuntime().maxMemory().
It then uses 10%(by default, though configurable) of this memory and divides this memory into
number of bags. It keeps track of the memory used by bags and then proactively spills if bags
memory usage reach close to these limits. Given all this in theory when presented with data
more then it can handle InternalCachedBag should not run out of memory. But in practice we
find OOM happening. 

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