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From "stack (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5792) HLog Performance Evaluation Tool
Date Mon, 16 Apr 2012 17:34:18 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5792?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13254827#comment-13254827

stack commented on HBASE-5792:

This is great Matteo.  We need this.  Yeah, agree, this tool will have most value if it puts
nothing but a lone region (and WAL).

Few minors below:

Missing annotatations on audience.

Do you need these?  IIRC, the default exists w/ need of definition:

+  public HLogPerformanceEvaluation() {
+  }

You do it in another place at least too.

No harm adding a bit of class doc on HLogPutBenchmark

You don't want to use a command parser?

> HLog Performance Evaluation Tool
> --------------------------------
>                 Key: HBASE-5792
>                 URL: https://issues.apache.org/jira/browse/HBASE-5792
>             Project: HBase
>          Issue Type: Test
>          Components: wal
>            Reporter: Matteo Bertozzi
>            Assignee: Matteo Bertozzi
>            Priority: Minor
>              Labels: performance, wal
>         Attachments: HBASE-5792-v0.patch, HBASE-5792-v1.patch
> Related to HDFS-3280 and the HBase WAL slowdown on 0.23+
> It would be nice to have a simple tool like HFilePerformanceEvaluation, ...
> to be able to check easily the HLog performance.

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