Yu Li created HBASE-15451:
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Summary: Remove unnecessary wait in MVCC
Key: HBASE-15451
URL: https://issues.apache.org/jira/browse/HBASE-15451
Project: HBase
Issue Type: Improvement
Affects Versions: 1.2.0, 2.0.0
Reporter: Yu Li
Assignee: Yu Li
Currently the return value of MVCC#complete indicates whether readPoint already
advanced over write number of the given WriteEntry:
{code}
return readPoint.get() >= writeEntry.getWriteNumber();
{code}
While in MVCC#checkAndWait we never take usage of this but always call
waitForRead which will acquire and release lock on {{readWaiters}} and cause
additional context switch. This JIRA will improve this logic and remove the
unnecessary wait.
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