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From "Hanisha Koneru (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-14902) LoadGenerator#genFile write close timing is incorrectly calculated
Date Tue, 26 Sep 2017 22:25:00 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-14902?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Hanisha Koneru updated HADOOP-14902:
------------------------------------
    Attachment: HADOOP-14902.002.patch

Thanks for the review, [~jlowe]. I have updated the patch.

> LoadGenerator#genFile write close timing is incorrectly calculated
> ------------------------------------------------------------------
>
>                 Key: HADOOP-14902
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14902
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs
>    Affects Versions: 2.4.0
>            Reporter: Jason Lowe
>            Assignee: Hanisha Koneru
>         Attachments: HADOOP-14902.001.patch, HADOOP-14902.002.patch
>
>
> LoadGenerator#genFile's write close timing code looks like the following:
> {code}
>         startTime = Time.now();
>         executionTime[WRITE_CLOSE] += (Time.now() - startTime);
> {code}
> That code will generate a zero (or near zero) write close timing since it isn't actually
closing the file in-between timestamp lookups.



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