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From "steven-wugang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-12068) Modify judgment condition in function computeVolumeDataDensity,otherwise maybe divided by zero
Date Thu, 29 Jun 2017 03:35:00 GMT

     [ https://issues.apache.org/jira/browse/HDFS-12068?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

steven-wugang updated HDFS-12068:
---------------------------------
    Attachment: HDFS-12068.patch

> Modify judgment condition in function computeVolumeDataDensity,otherwise maybe divided
by zero
> ----------------------------------------------------------------------------------------------
>
>                 Key: HDFS-12068
>                 URL: https://issues.apache.org/jira/browse/HDFS-12068
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: steven-wugang
>            Assignee: steven-wugang
>         Attachments: HDFS-12068.patch
>
>
> IN function computeVolumeDataDensity,there is a piece of code,as follow:
>  public void computeVolumeDataDensity() {
>      ...
> 	 if (volume.computeEffectiveCapacity() < 0) {
>           skipMisConfiguredVolume(volume);
>           continue;
>         }
> 	....
> 	double dfsUsedRatio =
>             truncateDecimals(volume.getUsed() /
>                 (double) volume.computeEffectiveCapacity());
>  
>     ....
> }
> Did not filter out the case that volume.computeEffectiveCapacity() is zero´╝îmaybe divided
by zero behind.



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