Hello,

We have just setup Hive on a new Hadoop cluster.

When I run a select * on a table, it works fine but when I run any query
which needs a reducer, like count(1) or a where condition, the query just
sits there doing nothing (map 0%). I see some message like no reducers to
run. How do I fix this? The configuration et al is  exactly like another
environment that is working fine.

We are running CDH2 with Hadoop 0.20.1 and Hive 0.4.1

Cheers!

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