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Posted to issues@hbase.apache.org by "Sean Busbey (JIRA)" <ji...@apache.org> on 2014/12/08 17:10:16 UTC
[jira] [Work started] (HBASE-12655) WALPerformanceEvaluation
miscalculates append/sync statistics for multiple regions
[ https://issues.apache.org/jira/browse/HBASE-12655?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Work on HBASE-12655 started by Sean Busbey.
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> 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
> Fix For: 1.0.0, 2.0.0
>
>
> 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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