Joe McDonnell created HDFS-12714:
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Summary: 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-alpha3, 3.0.0-alpha4, 3.0.0-alpha2, 3.0.0-beta1,
3.0.0-alpha1
Reporter: Joe McDonnell
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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