CODEWITHSUNDEEP
hadoophive
Shashwath
Shashwath

Reputation: 452

Count * query gets stuck at reducer 0% although the mapper completes

I have a hive external table with 255 columns which has input data size of around 25 GB. This is a single node cluster set up with Hadoop-1.2.1 and hive-0.11.0.

I am able to create tables, databases etc... But when I try a count(*) query in hive, the mapper succeeds but the reducers never start. They are stuck at 0% forever.

The single node machine has a memory of 1TB. Any inputs here will be greatly appreciated.

Upvotes: 0

Views: 107

Answers (1)

user7206219
user7206219

Reputation:

My suggestion is to use beeline instead of hive, Hive is deprecated so some issues will not be resolved when it is getting deprecated.

Upvotes: 0

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