Deneche A. Hakim created DRILL-3811:
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Summary: AtomicRemainder incorrectly accounts for transferred
allocations
Key: DRILL-3811
URL: https://issues.apache.org/jira/browse/DRILL-3811
Project: Apache Drill
Issue Type: Bug
Components: Execution - Relational Operators
Reporter: Deneche A. Hakim
Assignee: Deneche A. Hakim
when an allocator takes ownership of a buffer, AtomicRemainder.forceGet(int) is
called to account for the extra memory of the buffer, but when the allocator
exceeds it's maximum allocated memory it accounts for it incorrectly. In the
following code, {{availableShared.andAndGet(size)}} should actually receive
{{-size}}:
{code}
public boolean forceGet(long size) {
if (get(size, this.applyFragmentLimit)) {
return true;
} else {
availableShared.addAndGet(size);
if (parent != null) {
parent.forceGet(size);
}
return false;
}
}
{code}
I was able to reproduce the issue in a simple unit test
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