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https://issues.apache.org/jira/browse/HBASE-17021?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Duo Zhang updated HBASE-17021:
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Attachment: HBASE-17021.patch
Use ringbuffer instead of ArrayDeque in AsyncFSWAL to reduce contention.
The rolling logic is also reimplemented. Now we will only wait for the ack of
all out-going appends, will not try to write out all the pending appends before
rolling.
Unify AsyncFSWAL.Payload to RingBufferTruck, and also add tracing for
AsyncFSWAL.append.
Fix a simple bug that we do not reset numEntries after rolling.
I set the default WAL to asyncfs in the patch. Just want to see the precommit
test result to find out bugs. Will revert to filesystem when commit.
[~stack] [~ram_krish], PTAL. Thanks.
> Use RingBuffer to reduce the contention in AsyncFSWAL
> -----------------------------------------------------
>
> Key: HBASE-17021
> URL: https://issues.apache.org/jira/browse/HBASE-17021
> Project: HBase
> Issue Type: Sub-task
> Components: wal
> Affects Versions: 2.0.0
> Reporter: Duo Zhang
> Fix For: 2.0.0
>
> Attachments: HBASE-17021.patch
>
>
> The WALPE result in HBASE-16890 shows that with disruptor's RingBuffer we can
> get a better performance.
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