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https://issues.apache.org/jira/browse/HBASE-12655?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14239744#comment-14239744
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Hudson commented on HBASE-12655:
--------------------------------
FAILURE: Integrated in HBase-1.0 #558 (See
[https://builds.apache.org/job/HBase-1.0/558/])
HBASE-12655 WALPerformanceEvaluation should only add stat gathering listener
once per WAL. (busbey: rev d2d6945e8951391a3b04d89f2879b51d7df26bb7)
* hbase-server/src/main/java/org/apache/hadoop/hbase/wal/WAL.java
*
hbase-server/src/test/java/org/apache/hadoop/hbase/wal/WALPerformanceEvaluation.java
*
hbase-server/src/test/java/org/apache/hadoop/hbase/wal/TestDefaultWALProvider.java
> WALPerformanceEvaluation miscalculates append/sync statistics for multiple
> regions
> ----------------------------------------------------------------------------------
>
> Key: HBASE-12655
> URL: https://issues.apache.org/jira/browse/HBASE-12655
> Project: HBase
> Issue Type: Bug
> Components: wal
> Affects Versions: 0.99.2
> Reporter: Sean Busbey
> Assignee: Sean Busbey
> Priority: Minor
> Fix For: 1.0.0, 2.0.0
>
> Attachments: HBASE-12655.1.patch.txt
>
>
> Right now the WALPerformaceEvaluation tool sets up each new region by asking
> for a WAL and then adding a listener. The listener updates running stats on
> appends / syncs using a shared object in the evaluation tool.
> For WALProviders that reuse WALs (such as the default one always using a
> single WAL), this results in adding a listener to WALs that already have
> them. Each of those listeners is then updated on each append/sync.
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