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From "John Zhuge (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HDFS-12714) Hadoop 3 missing fix for HDFS-5169
Date Wed, 01 Nov 2017 06:04:01 GMT

     [ https://issues.apache.org/jira/browse/HDFS-12714?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

John Zhuge resolved HDFS-12714.
-------------------------------
       Resolution: Fixed
    Fix Version/s: 3.0.0-beta1
                   3.1.0

Committed to trunk and branch-3.0. Thanks [~joemcdonnell] for the contribution!

> Hadoop 3 missing fix for HDFS-5169
> ----------------------------------
>
>                 Key: HDFS-12714
>                 URL: https://issues.apache.org/jira/browse/HDFS-12714
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: native
>    Affects Versions: 3.0.0-alpha1, 3.0.0-beta1, 3.0.0-alpha2, 3.0.0-alpha4, 3.0.0-alpha3
>            Reporter: Joe McDonnell
>            Assignee: Joe McDonnell
>            Priority: Major
>             Fix For: 3.1.0, 3.0.0-beta1
>
>         Attachments: HDFS-12714.001.patch
>
>
> HDFS-5169 is a fix for a null pointer dereference in translateZCRException. This line
in hdfs.c:
> ret = printExceptionAndFree(env, jthr, PRINT_EXC_ALL, "hadoopZeroCopyRead: ZeroCopyCursor#read
failed");
> should be:
> ret = printExceptionAndFree(env, exc, PRINT_EXC_ALL, "hadoopZeroCopyRead: ZeroCopyCursor#read
failed");
> Plainly, translateZCRException should print the exception (exc) passed in to the function
rather than the uninitialized local jthr.
> The fix for HDFS-5169 (part of HDFS-4949) exists on hadoop 2.* branches, but it is missing
on hadoop 3 branches including trunk.
> Hadoop 2.8:
> https://github.com/apache/hadoop/blob/branch-2.8/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfs/hdfs.c#L2514
> Hadoop 3.0:
> https://github.com/apache/hadoop/blob/branch-3.0/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfs/hdfs.c#L2691



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