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From Harsh J <ha...@cloudera.com>
Subject Re: How master and slaves works in hadoop cluster
Date Sat, 07 May 2011 12:44:32 GMT
Hello,

2011/5/7 hadoopfan <shhaijava@126.com>:
> The master is the central controller, slaves are specific cluster nodes?
> What to do if the master crashing(single point failure)?
> thanks

There are umbrella issues filed for Availability of both NN and JT, if
you'd like to see the current available work done upon these topics
and contribute something.

HDFS: https://issues.apache.org/jira/browse/HDFS-1064
MapReduce: https://issues.apache.org/jira/browse/MAPREDUCE-2288

HTH.

-- 
Harsh J

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