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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-10962) Flags for posix_fadvise are not valid in some architectures
Date Tue, 12 Aug 2014 22:26:12 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-10962?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14094794#comment-14094794

Hadoop QA commented on HADOOP-10962:

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:red}-1 tests included{color}.  The patch doesn't appear to include any new or modified
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 javadoc{color}.  There were no new javadoc warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version
2.0.3) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:red}-1 core tests{color}.  The patch failed these unit tests in hadoop-common-project/hadoop-common:


    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-HADOOP-Build/4457//testReport/
Console output: https://builds.apache.org/job/PreCommit-HADOOP-Build/4457//console

This message is automatically generated.

> 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
>         Attachments: HADOOP-10962.patch
> 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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