TASKS KILLED WHEN RUNNING : bin/hadoop jar hadoop-*-examples.jar grep input output 'dfs[a-z.]+'

[ashish pareek <pa...@gmail.com>]

hELLO TO EVERY BODY
           I AM A NEW HAOODP USER I STARTED RUNNING HADOOP USING SITE
http://hadoop.apache.org/core/docs/current/quickstart.html BUT WHEN I RUN
COMMAND  " bin/hadoop jar hadoop-*-examples.jar grep input output
'dfs[a-z.]+'  ", IN PSEDUO DISTRIBUTED MODE I GET ERROR LIKE :::

Task  task_200801251420_0007_m_000006_0 failed to report status for 601
seconds.  Killing!

Task  task_200801251420_0007_m_000007_0 failed to report status for 602
seconds.  Killing!

AND SO ON...

THEN ALL THE TAKED GETS KILLED ........

BUT STILL DATANODE IS ALIVE... I HAVE BEEN RUNNING HADOOP IN VMWARE AND ON
512MB RAM MACHINE......


SO PLZ HELP ME IN SOLVING THIS PROBLEM...

THANKS IN ADVANCE.

REGARDS,
ASHISH

Re: TASKS KILLED WHEN RUNNING : bin/hadoop jar hadoop-*-examples.jar grep input output 'dfs[a-z.]+'

[Steve Loughran <st...@apache.org>]

ashish pareek wrote:
> hELLO TO EVERY BODY
>            I AM A NEW HAOODP USER I STARTED RUNNING HADOOP USING SITE
> http://hadoop.apache.org/core/docs/current/quickstart.html BUT WHEN I RUN
> COMMAND  " bin/hadoop jar hadoop-*-examples.jar grep input output
> 'dfs[a-z.]+'  ", IN PSEDUO DISTRIBUTED MODE I GET ERROR LIKE :::
> 
> Task  task_200801251420_0007_m_000006_0 failed to report status for 601
> seconds.  Killing!

It was killed because it failed to report on its status for 601 seconds.

The task either needs to report it is alive to the tasktracker, or you 
need to tweak the timeouts so the tasks can run silent for longer than 
ten minutes before being assumed to have died