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Hadoop, mail # user - datanode tuning


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datanode tuning
Rita 2013-10-06, 14:49
I would like my 40 data nodes to aggressively report to namenode if they
are alive or not therefore I think I need to change these params

dfs.block.access.token.lifetime : Default is 600 seconds. Can I decrease
this to 60?
dfs.block.access.key.update.interval: Default is 600 seconds. Can I
decrease this to 60?

Also, what are some other turnings people do for datanodes in a relatively
large cluster?

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