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From "Gary Steelman (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-11044) FileSystem counters can overflow for large number of readOps, largeReadOps, writeOps
Date Mon, 08 Sep 2014 19:49:33 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-11044?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14125991#comment-14125991
] 

Gary Steelman commented on HADOOP-11044:
----------------------------------------

Hey [~sdaingade] I will take a look at this soon and see if there's anything I can help with.


> FileSystem counters can overflow for large number of readOps, largeReadOps, writeOps
> ------------------------------------------------------------------------------------
>
>                 Key: HADOOP-11044
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11044
>             Project: Hadoop Common
>          Issue Type: Improvement
>    Affects Versions: 2.5.0, 2.4.1
>            Reporter: Swapnil Daingade
>            Priority: Minor
>         Attachments: 11044.patch4
>
>
> 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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