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https://issues.apache.org/jira/browse/HDFS-3833?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13446164#comment-13446164
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Suresh Srinivas commented on HDFS-3833:
---------------------------------------
+1 for the patch.
> TestDFSShell fails on Windows due to file concurrent read write
> ---------------------------------------------------------------
>
> Key: HDFS-3833
> URL: https://issues.apache.org/jira/browse/HDFS-3833
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: test
> Affects Versions: 3.0.0, 1-win
> Reporter: Brandon Li
> Assignee: Brandon Li
> Attachments: HDFS-3833.branch-1-win.patch, HDFS-3833.patch
>
>
> TestDFSShell sometimes fails due to the race between the write issued by the
> test and blockscanner. Example stack trace:
> {noformat}
> Error Message
> c:\A\HM\build\test\data\dfs\data\data1\current\blk_-7735708801221347790 (The
> requested operation cannot be performed on a file with a user-mapped section
> open)
> Stacktrace
> java.io.FileNotFoundException:
> c:\A\HM\build\test\data\dfs\data\data1\current\blk_-7735708801221347790 (The
> requested operation cannot be performed on a file with a user-mapped section
> open)
> at java.io.FileOutputStream.open(Native Method)
> at java.io.FileOutputStream.<init>(FileOutputStream.java:194)
> at java.io.FileOutputStream.<init>(FileOutputStream.java:145)
> at java.io.PrintWriter.<init>(PrintWriter.java:218)
> at org.apache.hadoop.hdfs.TestDFSShell.corrupt(TestDFSShell.java:1133)
> at org.apache.hadoop.hdfs.TestDFSShell.testGet(TestDFSShell.java:1231)
> {noformat}
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