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From "Sandy Ryza (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2486) FileSystem counters can overflow for large number of readOps, largeReadOps, writeOps
Date Tue, 02 Sep 2014 00:15:21 GMT

    [ https://issues.apache.org/jira/browse/YARN-2486?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14117800#comment-14117800
] 

Sandy Ryza commented on YARN-2486:
----------------------------------

Unfortunately these methods were made public in 2.5, so we can't change their signatures.
 We can, however, add versions with new names that return longs.

> FileSystem counters can overflow for large number of readOps, largeReadOps, writeOps
> ------------------------------------------------------------------------------------
>
>                 Key: YARN-2486
>                 URL: https://issues.apache.org/jira/browse/YARN-2486
>             Project: Hadoop YARN
>          Issue Type: Bug
>    Affects Versions: 2.5.0, 2.4.1
>            Reporter: Swapnil Daingade
>            Priority: Minor
>
> The org.apache.hadoop.fs.FileSystem.Statistics.StatisticsData class defines readOps,
largeReadOps, writeOps as int. Also the The org.apache.hadoop.fs.FileSystem.Statistics class
has methods like getReadOps(), getLargeReadOps() and getWriteOps() that return int. These
int values can overflow if the exceed 2^31-1 showing negative values. It would be nice if
these can be changed to long.



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