David Villegas created HADOOP-10962:
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Summary: Flags for posix_fadvise are not valid in some
architectures
Key: HADOOP-10962
URL: https://issues.apache.org/jira/browse/HADOOP-10962
Project: Hadoop Common
Issue Type: Bug
Components: native
Affects Versions: 2.4.1
Environment: System z/Linux
Reporter: David Villegas
In org.apache.hadoop.io.nativeio.NativeIO.java, the posix_fadvise flag
parameter is hardcoded to the most common values in fcntl.h.
However, not all architectures use the same values (in this case, System
z/Linux) A better approach would be to not make assumptions about fcntl.h
values (or any other system constants).
This bug results in calls to posix_fadvise failing in zLinux.
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