How to install patches on Hadoop Cluster

Hi All, Is there any easy way or links which show how to install patches (OS / Hadoop) on a 100 node cluster? Thanks SP

How to handle Container crash in YARN

Hello, Can any please explain me how to handle/Resolve the Container crash in YARN Hadoop. Thanks Sajid Syed

Name Node HA ERROR

Hi All, I have configured CDH4 with HA. It was working fine for some time and now I started seeing this error and namenode had failed over to secondary server. 2014-12-17 08:44:31,847 FATAL org.apache.hadoop.hdfs.server.namenode.NameNode: Exception in namenode join org.apache.hadoop.hdfs.server.

HDFS block size question

Hello All, If the HDFS block size is to 128MB on the cluster and on the Client its set to 64MB, What will be the size of the Block when its written to HDFS.? Can any please point me to the link where I can find more information. Thanks Sajeeth