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Hadoop >> mail # user >> Possible to query the number of values as input of a reducer?


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Possible to query the number of values as input of a reducer?
Hi,

Just a small question. Is there a way to know how many values associated
with a key in a reducer, without using containers to store all of them?

Thanks.

--
*JU Han*

Software Engineer Intern @ KXEN Inc.
UTC   -  Université de Technologie de Compiègne
*     **GI06 - Fouille de Données et Décisionnel*

+33 0619608888
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