hadoop-mapreduce-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Manish Bhoge" <manishbh...@rocketmail.com>
Subject Re: Split locations
Date Wed, 07 Mar 2012 22:58:20 GMT
Job tracker is there just to invoke the job or submit the job. It doesn't play any role in
split and map. Here in your question mapper play a role to get splits.

Sent from my BlackBerry, pls excuse typo

-----Original Message-----
From: Pedro Costa <psdc1978@gmail.com>
Date: Wed, 7 Mar 2012 13:57:28 
To: mapreduce-user<mapreduce-user@hadoop.apache.org>
Reply-To: mapreduce-user@hadoop.apache.org
Subject: Split locations


In MapReduce, if the locations of the split are in {HostA, HostB, HostC},
and the respective map tasks will run in HostB, the map tasks will pick up
the split from HostB?

Who is responsible to make the map tasks get the spilt in HostB? Is the
JobTracker or the MapTask?

Best regards,

View raw message