Prashant Kommireddi created PIG-4299:
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Summary: SpillableMemoryManager assumes tenured heap incorrectly
Key: PIG-4299
URL: https://issues.apache.org/jira/browse/PIG-4299
Project: Pig
Issue Type: Bug
Affects Versions: 0.13.0
Reporter: Prashant Kommireddi
Fix For: 0.14.0
{code}
for (MemoryPoolMXBean b: mpbeans) {
log.debug("Found heap (" + b.getName() +
") of type " + b.getType());
if (b.getType() == MemoryType.HEAP) {
/* Here we are making the leap of faith that the biggest
* heap is the tenured heap
*/
long size = b.getUsage().getMax();
totalSize += size;
if (size > biggestSize) {
biggestSize = size;
biggestHeap = b;
}
}
}
{code}
A memory pool being MemoryType.HEAP does not guarantee it being tenured.
Moreover, we must check whether usage threshold is supported by heap before
trying to set usage threshold on it.
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