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From "Kannan Muthukkaruppan (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HBASE-2127) randomWrite mode of PerformanceEvaluation benchmark program writes only to a small range of keys
Date Fri, 15 Jan 2010 00:48:54 GMT

     [ https://issues.apache.org/jira/browse/HBASE-2127?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kannan Muthukkaruppan updated HBASE-2127:
-----------------------------------------

    Attachment: 2127.0.20.patch

> randomWrite mode of PerformanceEvaluation benchmark program writes only to a small range
of keys
> ------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-2127
>                 URL: https://issues.apache.org/jira/browse/HBASE-2127
>             Project: Hadoop HBase
>          Issue Type: Bug
>          Components: test
>    Affects Versions: 0.20.2
>         Environment: not relevant
>            Reporter: Kannan Muthukkaruppan
>            Priority: Minor
>         Attachments: 2127.0.20.patch
>
>
> "randomWrite" mode of PerformanceEvaluation (PE), with nclients > 1, does random writes
only within a small range rather than across all rows.
> e.g, for:
> ./bin/hbase org.apache.hadoop.hbase.PerformanceEvaluation --nomapred --rows=1000 randomWrite
10
> [Note: As per convention in all modes of PE, --rows is the number of rows per client]
> So for the above, with # of clients set to 10, currently all clients generate writes
to keys in the 0..999 range instead of the 0..9999 range.
> [Fix appears to be simple. Will provide a patch.]

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