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https://issues.apache.org/jira/browse/HDFS-11303?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16123625#comment-16123625
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John Zhuge commented on HDFS-11303:
-----------------------------------
Saw it in Aug 6 qbt:
{noformat}
For more details, see
https://builds.apache.org/job/hadoop-qbt-trunk-java8-linux-x86/484/
[Aug 4, 2017 4:40:45 PM] (jzhuge) HADOOP-14471. Upgrade Jetty to latest 9.3
version. Contributed by John
[Aug 4, 2017 5:40:52 PM] (arp) HADOOP-13963. /bin/bash is hard coded in some of
the scripts.
[Aug 4, 2017 6:21:58 PM] (lei) HDFS-12251. Add document for StreamCapabilities.
(Lei (Eddy) Xu)
[Aug 4, 2017 7:51:33 PM] (arp) HDFS-12224. Add tests to TestJournalNodeSync for
sync after JN downtime.
[Aug 4, 2017 11:03:56 PM] (junping_du) YARN-6811. [ATS1.5] All history logs
should be kept under its own User
[Aug 4, 2017 11:46:59 PM] (arp) HADOOP-14685. Exclude some test jars from
hadoop-client-minicluster jar.
hadoop.security.TestRaceWhenRelogin
hadoop.hdfs.TestDFSStripedOutputStreamWithFailure080
hadoop.hdfs.TestDFSStripedInputStreamWithRandomECPolicy
hadoop.hdfs.TestRollingUpgrade
{noformat}
> Hedged read might hang infinitely if read data from all DN failed
> ------------------------------------------------------------------
>
> Key: HDFS-11303
> URL: https://issues.apache.org/jira/browse/HDFS-11303
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs-client
> Affects Versions: 3.0.0-alpha1
> Reporter: Chen Zhang
> Assignee: Chen Zhang
> Attachments: HDFS-11303-001.patch, HDFS-11303-001.patch,
> HDFS-11303-002.patch, HDFS-11303-002.patch, HDFS-11303.003.patch,
> HDFS-11303.004.patch, HDFS-11303.005.patch
>
>
> Hedged read will read from a DN first, if timeout, then read other DNs
> simultaneously.
> If read all DN failed, this bug will cause the future-list not empty(the
> first timeout request left in list), and hang in the loop infinitely
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