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https://issues.apache.org/jira/browse/HDFS-7163?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15025292#comment-15025292
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Eric Payne commented on HDFS-7163:
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Looks like {{TestPermission#testBackwardCompatibility}} is broken by
HADOOP-12294 as documented
[here|https://issues.apache.org/jira/browse/HDFS-9451?focusedCommentId=15023926&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15023926]
> WebHdfsFileSystem should retry reads according to the configured retry policy.
> ------------------------------------------------------------------------------
>
> Key: HDFS-7163
> URL: https://issues.apache.org/jira/browse/HDFS-7163
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: webhdfs
> Affects Versions: 3.0.0, 2.5.1
> Reporter: Eric Payne
> Assignee: Eric Payne
> Attachments: HDFS-7163-branch-2.003.patch,
> HDFS-7163-branch-2.004.patch, HDFS-7163-branch-2.7.003.patch,
> HDFS-7163-branch-2.7.004.patch, HDFS-7163.001.patch, HDFS-7163.002.patch,
> HDFS-7163.003.patch, HDFS-7163.004.patch, WebHDFS Read Retry.pdf
>
>
> In the current implementation of WebHdfsFileSystem, opens are retried
> according to the configured retry policy, but not reads. Therefore, if a
> connection goes down while data is being read, the read will fail and the
> read will have to be retried by the client code.
> Also, after a connection has been established, the next read (or seek/read)
> will fail and the read will have to be restarted by the client code.
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