Gopal V created TEZ-2644:
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Summary: UnorderedKVOutputWriter has unnecessary synchronized
blocks
Key: TEZ-2644
URL: https://issues.apache.org/jira/browse/TEZ-2644
Project: Apache Tez
Issue Type: Bug
Affects Versions: 0.8.0, 0.7.1
Reporter: Gopal V
Nearly 50% of the CPU samples for Unordered 1-1 edges are either in
ByteArrayOutputStream or DataOutputStream synchronization primitives.
!flink-1-1-edge.png!
!dataoutputstream-sync.png!
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