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From "Sean Busbey (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-12655) WALPerformanceEvaluation miscalculates append/sync statistics for multiple regions
Date Tue, 09 Dec 2014 07:10:12 GMT

     [ https://issues.apache.org/jira/browse/HBASE-12655?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sean Busbey updated HBASE-12655:
--------------------------------
    Status: Patch Available  (was: In Progress)

> 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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