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Date: Mon, 8 Dec 2014 16:10:15 +0000 (UTC)
From: "Sean Busbey (JIRA)" <jira@apache.org>
To: dev@hbase.apache.org
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Subject: [jira] [Created] (HBASE-12655) WALPerformanceEvaluation
 miscalculates append/sync statistics for multiple regions
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Sean Busbey created HBASE-12655:
-----------------------------------

             Summary: 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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