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How to configure secondary namenode in Hadoop?

+1 vote
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I have an old Hadoop install that Im looking to update to Hadoop 2. In the old setup, I have a /conf/masters file that specifies the secondary namenode.

Looking through the Hadoop 2 documentation I cant find any mention of a "masters" file, or how to setup a secondary namenode.

Thanks in advance?

posted Jun 18, 2014 by Jagan Mishra

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+2 votes

I am running hadoop-2.4.0 cluster. Each datanode has 10 disks, directories for 10 disks are specified in dfs.datanode.data.dir.

A few days ago, I modified dfs.datanode.data.dir of a datanode () to reduce disks. so two disks were excluded from dfs.datanode.data.dir, after the datanode was restarted, I expected that the namenode would update block locations. In other words, I thought the namenode should remove from block locations associated with blocks which were stored on excluded disks, but the namenode didnt update the block locations...

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+6 votes

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