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https://issues.apache.org/jira/browse/HADOOP-9042?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13497866#comment-13497866
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Colin Patrick McCabe commented on HADOOP-9042:
----------------------------------------------
The problem seems to be that DFSClient caches the value of
fs.permissions.umask-mode once when it's created, and doesn't update it if the
configured value changes. The value is cached in a final field in
{{DFSClient#Conf#uMask}}.
> Add a test for umask in FileSystemContractBaseTest
> --------------------------------------------------
>
> Key: HADOOP-9042
> URL: https://issues.apache.org/jira/browse/HADOOP-9042
> Project: Hadoop Common
> Issue Type: Test
> Reporter: Colin Patrick McCabe
> Assignee: Colin Patrick McCabe
> Priority: Minor
> Fix For: 2.0.3-alpha
>
> Attachments: HDFS-3975.001.patch, HDFS-3975.002.patch,
> HDFS-3975.003.patch, HDFS-3975.004.patch, HDFS-3975.005.patch,
> HDFS-3975.006.patch
>
>
> Add a unit test to make sure {{umask}} is working correctly in
> FileSystemContractBaseTest.
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