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Hadoop >> mail # user >> DataNode heartbeat average time peaks


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DataNode heartbeat average time peaks
Hi!

We see DataNode heartbeat average time peaks in Ganglia up to 20-70 seconds
while SecondaryNameNode performs checkpointing.
See attached screenshots please.

I would like to clarify if it is Ok, or not. And what kind of consequences
and risks it could bring up.

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Best Regards
Ivan Tretyakov
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB