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https://issues.apache.org/jira/browse/HBASE-2315?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13400967#comment-13400967
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Jonathan Hsieh commented on HBASE-2315:
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@Flavio
I'm suggesting you use the Factory pattern to create the HLog, and have in the
config file that would have it instantiate a new BKHLog (doesn't even use FS or
Path) that returns its own instances of BKReader/BKWriters.
I only see a handful of non-test places where HLogs are constructed so this
part shouldn't be too hard to make factory pluggable:
https://github.com/apache/hbase/blob/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java#L1267
https://github.com/apache/hbase/blob/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java#L3719
https://github.com/apache/hbase/blob/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/util/HMerge.java#L161
(I think there are a few more)..
My guess is that it will take a little bit of work but won't be too onerous to
do.
> BookKeeper for write-ahead logging
> ----------------------------------
>
> Key: HBASE-2315
> URL: https://issues.apache.org/jira/browse/HBASE-2315
> Project: HBase
> Issue Type: New Feature
> Components: regionserver
> Reporter: Flavio Junqueira
> Attachments: HBASE-2315.patch, bookkeeperOverview.pdf,
> zookeeper-dev-bookkeeper.jar
>
>
> BookKeeper, a contrib of the ZooKeeper project, is a fault tolerant and high
> throughput write-ahead logging service. This issue provides an implementation
> of write-ahead logging for hbase using BookKeeper. Apart from expected
> throughput improvements, BookKeeper also has stronger durability guarantees
> compared to the implementation currently used by hbase.
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