Amitanand Aiyer created HBASE-5996:
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Summary: Improve multiPut/multiDelete by moving HLog.append and
updateTimestamp out of the updateLock.readLock.lock()/unlock() functionality
Key: HBASE-5996
URL: https://issues.apache.org/jira/browse/HBASE-5996
Project: HBase
Issue Type: Improvement
Components: regionserver
Affects Versions: 0.89.20100924, 0.94.0, 0.89-fb
Reporter: Amitanand Aiyer
Assignee: Amitanand Aiyer
Priority: Minor
whenever we do a batchMutateWithLocks in HRegion,
we get the HRegion.updateLock.readLock() ...
My understanding is that we need the updateLock.readLock only
to protect the updates to the memStore.
(i) HLog.append() has its own serialization/locking using HLog.updateLock
We can move this out of the HRegion.updateLock lock grabbing.
(ii) updating the timestamp for deltes and puts, can also be done before
grabbing the lock.
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