You are viewing a plain text version of this content. The canonical link for it is here.

Posted to dev@hbase.apache.org by "Lars Hofhansl (JIRA)" <ji...@apache.org> on 2014/02/17 23:36:23 UTC

[jira] [Resolved] (HBASE-10552) HFilePerformanceEvaluation.GaussianRandomReadBenchmark fails sometimes.

     [ https://issues.apache.org/jira/browse/HBASE-10552?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lars Hofhansl resolved HBASE-10552.
-----------------------------------

    Resolution: Fixed

Committed to all branches.

> HFilePerformanceEvaluation.GaussianRandomReadBenchmark fails sometimes.
> -----------------------------------------------------------------------
>
>                 Key: HBASE-10552
>                 URL: https://issues.apache.org/jira/browse/HBASE-10552
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Lars Hofhansl
>            Priority: Minor
>             Fix For: 0.96.2, 0.98.1, 0.99.0, 0.94.17
>
>         Attachments: 10552-0.94.txt, 10552-trunk.txt
>
>
> GaussianRandomReadBenchmark generates seek keys by using a Gaussian distribution with the mean of N/2 and a sigma of N/10 (N = number of rows used)  and using this key directly to seek into the HFile. The HFile was seeded with keys from 0-N.
> This will fail if we ever generate a key < 0, which is rare, but by no means impossible. We need to clamp the min and max values to 0 and N, resp.



--
This message was sent by Atlassian JIRA
(v6.1.5#6160)