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https://issues.apache.org/jira/browse/HBASE-5996?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Purtell resolved HBASE-5996.
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Resolution: Incomplete
Assignee: (was: Amitanand Aiyer)
> 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, 0.89-fb, 0.94.0
> Reporter: 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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