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https://issues.apache.org/jira/browse/HADOOP-11044?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14123342#comment-14123342
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Swapnil Daingade commented on HADOOP-11044:
-------------------------------------------

Looked at the test failures. Not sure if these are directly related to the fix. 
I had submitted the exact same patch earlier. The two tests that had failed 
earlier org.apache.hadoop.hdfs.web.TestWebHdfsFileSystemContract and 
org.apache.hadoop.hdfs.server.namenode.ha.TestPipelinesFailover have now passed 
and a test that had passed earlier org.apache.hadoop.ipc.TestFairCallQueue has 
now failed. I still cannot access the diffJavacWarnings.txt from the testReport 
to fix the increase in the number of warnings.
It would be great if someone can take a look at this. Please let me know if 
there is something more that I can do to help with the patch.



> 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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