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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 Tue, 09 Sep 2014 01:49:30 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-11044?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14126465#comment-14126465
] 

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

Unfortunately I don't see immediately where the additional javac warnings are coming from.
The way the Jira message is generated can be found in dev-support/test-patch.sh and the function
checkJavacWarnings(). Can you try running that logic locally to see what the warnings are?

> 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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