RE: Hadoop Internal Architecture writeup (failure handling)

2008-12-01 Thread Amar Kamat
To: core-user@hadoop.apache.org Subject: RE: Hadoop Internal Architecture writeup (failure handling) Comments inline. Amar -Original Message- From: Ricky Ho [mailto:[EMAIL PROTECTED] Sent: Mon 12/1/2008 10:09 AM To: core-user@hadoop.apache.org Subject: Hadoop Internal Architecture writ

RE: Hadoop Internal Architecture writeup (failure handling)

2008-12-01 Thread Amar Kamat
Comments inline. Amar -Original Message- From: Ricky Ho [mailto:[EMAIL PROTECTED] Sent: Mon 12/1/2008 10:09 AM To: core-user@hadoop.apache.org Subject: Hadoop Internal Architecture writeup (failure handling) More questions on component failure handling. Can anyone confirm (or correct

Hadoop Internal Architecture writeup (failure handling)

2008-12-01 Thread Ricky Ho
More questions on component failure handling. Can anyone confirm (or correct) that ? 1) When a TaskTracker crashes, the JobTracker haven't heard its heartbeat after a timeout period will conclude its crashes and re-allocate the unfinished task to other tasktrackers. Correct ? 2) If the origi