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Posted to common-issues@hadoop.apache.org by "tigar (Commented) (JIRA)" <ji...@apache.org> on 2012/03/15 03:34:38 UTC
[jira] [Commented] (HADOOP-7682) taskTracker could not start
because "Failed to set permissions" to "ttprivate to 0700"
[ https://issues.apache.org/jira/browse/HADOOP-7682?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13229842#comment-13229842 ]
tigar commented on HADOOP-7682:
-------------------------------
same problem with cygin~:('
> taskTracker could not start because "Failed to set permissions" to "ttprivate to 0700"
> --------------------------------------------------------------------------------------
>
> Key: HADOOP-7682
> URL: https://issues.apache.org/jira/browse/HADOOP-7682
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs
> Affects Versions: 0.20.203.0, 0.20.205.0, 1.0.0
> Environment: OS:WindowsXP SP3 , Filesystem :NTFS, cygwin 1.7.9-1, jdk1.6.0_05
> Reporter: Magic Xie
>
> ERROR org.apache.hadoop.mapred.TaskTracker:Can not start task tracker because java.io.IOException:Failed to set permissions of path:/tmp/hadoop-cyg_server/mapred/local/ttprivate to 0700
> at org.apache.hadoop.fs.RawLocalFileSystem.checkReturnValue(RawLocalFileSystem.java:525)
> at org.apache.hadoop.fs.RawLocalFileSystem.setPermission(RawLocalFileSystem.java:499)
> at org.apache.hadoop.fs.RawLocalFileSystem.mkdirs(RawLocalFileSystem.java:318)
> at org.apache.hadoop.fs.FilterFileSystem.mkdirs(FilterFileSystem.java:183)
> at org.apache.hadoop.mapred.TaskTracker.initialize(TaskTracker.java:635)
> at org.apache.hadoop.mapred.TaskTracker.(TaskTracker.java:1328)
> at org.apache.hadoop.mapred.TaskTracker.main(TaskTracker.java:3430)
> Since hadoop0.20.203 when the TaskTracker initialize, it checks the permission(TaskTracker Line 624) of (org.apache.hadoop.mapred.TaskTracker.TT_LOG_TMP_DIR,org.apache.hadoop.mapred.TaskTracker.TT_PRIVATE_DIR, org.apache.hadoop.mapred.TaskTracker.TT_PRIVATE_DIR).RawLocalFileSystem(http://svn.apache.org/viewvc/hadoop/common/tags/release-0.20.203.0/src/core/org/apache/hadoop/fs/RawLocalFileSystem.java?view=markup) call setPermission(Line 481) to deal with it, setPermission works fine on *nx, however,it dose not alway works on windows.
> setPermission call setReadable of Java.io.File in the line 498, but according to the Table1 below provided by oracle,setReadable(false) will always return false on windows, the same as setExecutable(false).
> http://java.sun.com/developer/technicalArticles/J2SE/Desktop/javase6/enhancements/
> is it cause the task tracker "Failed to set permissions" to "ttprivate to 0700"?
> Hadoop 0.20.202 works fine in the same environment.
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