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From "Swapnil Daingade (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-11044) FileSystem counters can overflow for large number of readOps, largeReadOps, writeOps
Date Wed, 03 Sep 2014 08:04:51 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-11044?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14119519#comment-14119519
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Swapnil Daingade commented on HADOOP-11044:
-------------------------------------------

* I am unable to access https://builds.apache.org/job/PreCommit-HADOOP-Build/4637//artifact/trunk/patchprocess/diffJavacWarnings.txt
I get a 404 The requested resource is not available.
* Regarding testing, I am wondering if changing the following tests to use the new methods
should be good enough.
org.apache.hadoop.hdfs.TestDistributedFileSystem.testStatistics() and
org.apache.hadoop.fs.FCStatisticsBaseTest.testStatisticsOperations()

> 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.patch2
>
>
> 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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