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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4160) libhdfs / fuse-dfs should implement O_CREAT | O_EXCL
Date Wed, 29 May 2013 18:46:22 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4160?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13669558#comment-13669558

Hadoop QA commented on HDFS-4160:

{color:green}+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:green}+1 tests included{color}.  The patch appears to include 1 new or modified
test files.

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

    {color:green}+1 javadoc{color}.  The javadoc tool did not generate any 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
1.3.9) warnings.

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

    {color:green}+1 core tests{color}.  The patch passed unit tests in hadoop-hdfs-project/hadoop-hdfs.

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

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/4451//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/4451//console

This message is automatically generated.
> libhdfs / fuse-dfs should implement O_CREAT | O_EXCL
> ----------------------------------------------------
>                 Key: HDFS-4160
>                 URL: https://issues.apache.org/jira/browse/HDFS-4160
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: libhdfs
>    Affects Versions: 2.0.3-alpha
>            Reporter: Colin Patrick McCabe
>            Assignee: Colin Patrick McCabe
>            Priority: Minor
>         Attachments: HDFS-4160.001.patch
> {{hdfsOpenFile}} contains this code:
> {code}
> if ((flags & O_CREAT) && (flags & O_EXCL)) {                        
>   fprintf(stderr, "WARN: hdfs does not truly support O_CREATE && O_EXCL\n");
> } 
> {code}
> But {{hdfsOpenFile}} could easily support *O_CREAT* | *O_EXCL* by calling {{FileSystem#create}}
with {{overwrite = false}}.
> We should do this.  It would also benefit {{fuse-dfs}}.

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