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Hadoop >> mail # user >> how to get the time of a hadoop cluster, v0.20.2


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Re: how to get the time of a hadoop cluster, v0.20.2
Hi,

> i have another computer (which i have referred to as a server, since it is
> running tomcat), and this computer is NOT a part of the hadoop cluster (it
> doesn't run any of the hadoop daemons), but does submit jobs to the hadoop
> cluster via a JEE webapp interface. i need to check that the time on this
> computer is in sync with the time on the hadoop cluster. when i say "check
> that the time is in sync", there is a defined tolerance/threshold
> difference in date/time that i am willing to accept (e.g. the date/time
> should be the same down to the minute).

If you ensure (using NTP) that all your servers have the same time then you
can simply query your local server for the time and you have the correct
answer to your question.

You are searching for a solution in the Hadoop API (where this does not
exist) when the solution is present at a different level.

--
Best regards / Met vriendelijke groeten,

Niels Basjes
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