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MapReduce >> mail # user >> issue with map running time


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issue with map running time
Hi ,

I have a job which has let us say 10 mappers running in parallel.
Some are running fast but few of them are taking too long to run.
For example few mappers are taking 5 to 10 mins but others are taking
around 12 hours or more.
Does the difference in the data handled by the mappers can cause such a
variation or is it the issue with connectivity.

Note:The cluster we are using have multiple users running their jobs on it.

Thanks in advance.
Subbu
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