better tuning for number of reducers
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Key: HIVE-1248
URL: https://issues.apache.org/jira/browse/HIVE-1248
Project: Hadoop Hive
Issue Type: Improvement
Components: Query Processor
Reporter: Namit Jain
Fix For: 0.6.0
Currently, the following parameter:
BYTESPERREDUCER("hive.exec.reducers.bytes.per.reducer", (long) (1000 * 1000 *
1000)),
decides the number of reducers for a given query - it is same for all
map-reduce jobs of the query. It would be good to give more flexibility to the
user, and provide a way so that they can determine number of reducers for each
map-reduce job
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