Teddy Choi created HIVE-20368:
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Summary: Remove VectorTopNKeyOperator lock
Key: HIVE-20368
URL: https://issues.apache.org/jira/browse/HIVE-20368
Project: Hive
Issue Type: Bug
Reporter: Teddy Choi
Assignee: Teddy Choi
VectorTopNKeyOperator has a lock in line 199 as following.
{code:java}
priorityQueue.offer(WritableUtils.clone(keysWritable, getConfiguration()));
{code}
WritableUtils.clone calls Confgiruation.getClassByNameOrNull that has
synchronized block. So it needs to run without locks.
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