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https://issues.apache.org/jira/browse/MAPREDUCE-879?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12791484#action_12791484
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Allen Wittenauer commented on MAPREDUCE-879:
--------------------------------------------
If I'm looking at the code correctly, it does the same thing. :(
{code}
/// loads permissions, owner, and group from `ls -ld`
private void loadPermissionInfo() {
IOException e = null;
try {
StringTokenizer t = new StringTokenizer(
execCommand(new File(getPath().toUri()),
Shell.getGET_PERMISSION_COMMAND()));
//expected format
//-rw------- 1 username groupname ...
{code}
The problem is that ls is one of the shell commands that output was never
defined for users/groups over 8 characters because at the time, UNIX didn't
support users/groups over 8 characters. Thus every OS does their own thing when
faced with this situation. Some put a space such that awk works, some truncate
to 8, some smash them all together. [In the case of Solaris, the official
response is "Not Support" much to the angst of the SA community, but Sun is
specifically trying to avoid undefined behavior like this one.]
stat (as we've discovered) isn't portable either.
Best bet is probably to shell out a shell script that does the proper thing for
the OS it is running on until we get a decent JNI library in place.
> TestTaskTrackerLocalization fails on MAC OS
> -------------------------------------------
>
> Key: MAPREDUCE-879
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-879
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: test
> Affects Versions: 0.21.0
> Environment: Mac OS X 10.5.7
> Reporter: Devaraj Das
> Assignee: Sreekanth Ramakrishnan
> Priority: Blocker
> Fix For: 0.21.0
>
> Attachments: mapreduce-879-1.patch,
> TEST-org.apache.hadoop.mapred.TestTaskTrackerLocalization.txt
>
>
> TestTaskTrackerLocalization failed on an 'ant test' run.
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