Dear Joey,
as you know when installing cygwin in new version of windows- for ssh to
localhost- a new user created by cygwin (cyg_server). my main user is
Administrator.
I run namenode -fomat and dfs created in /tmp/Administrator-hadoop/ ~~~
.But tasktracker started by cyg_server and makes again
/tmp/cyg_server-hadoop/~~~
I tried these :
* I installed cygwin again and by some way i changed the cyg_server to
Administrator.now tasktracker is ran by Administrator to, but same
error.
* i changed hadoop.tmp.dir to the inside of cygwin dir, again same error.
*i think* the problem is related to Java, it makes HFDS based on windows
path and permission. when i checked the hdfs permission under cygwin is
--------- means nothing !!!!
and then by running tasktracker it wana change the permission according
to the Linux permission so it can't.
i dont know what is the solution, ..... im playing with this issue
around 4 days but no result.
BS.
Masoud
On 11/03/2011 08:19 PM, Joey Echeverria wrote:
What are the permissions on \tmp\hadoop-cyg_server\mapred\local\ttprivate?
Which user owns that directory?
Which user are you starting you TaskTracker as?
-Joey
On Wed, Nov 2, 2011 at 9:29 PM, Masoud<mas...@agape.hanyang.ac.kr> wrote:
Hi,
Im running hadop 0.20.204 under cygwin 1.7 on Win7, java 1.6.22
i got this error:
2011-11-01 14:26:54,479 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 *
I tried different ways, i even setted {hadoop.tmp.dir} to the cygwin home
dir too, got same result,
the problem is that JAVA using windows path and file permission to create
HDFS, and i think
under cygwin by simulating Linux behaviour Hadoop can not change the windows
permission to
Linux permission for mentioned folder in error message,
Maybe its a bug and should fixed in source code.,
Any idea please.....
Thanks,
Masoud.
On 11/01/2011 08:12 PM, Rita wrote:
Why ?
The beauty of hadoop is its OS agnostic. What is your native operating
system? I am sure you have a version of JDK and JRE running there.
On Tue, Nov 1, 2011 at 4:53 AM, Masoud<mas...@agape.hanyang.ac.kr> wrote:
Hi
Anybody ran hadoop on cygwin for development purpose???
Did you have any problem in running tasktracker?
Thanks
