John Lilley 2013-05-21, 18:57
-Re: Shuffle phase replication factor
Kai Voigt 2013-05-21, 18:58
The map output doesn't get written to HDFS. The map task writes its output to its local disk, the reduce tasks will pull the data through HTTP for further processing.
Am 21.05.2013 um 19:57 schrieb John Lilley <[EMAIL PROTECTED]>:
> When MapReduce enters “shuffle” to partition the tuples, I am assuming that it writes intermediate data to HDFS. What replication factor is used for those temporary files?
John Lilley 2013-05-22, 14:33
Shahab Yunus 2013-05-22, 14:37
Rahul Bhattacharjee 2013-05-22, 14:51
John Lilley 2013-05-22, 14:57
Kun Ling 2013-05-23, 01:50