Showing posts with label
hive
.
Show all posts
Showing posts with label
hive
.
Show all posts
Tuesday, November 18, 2014
Understanding Hive joins in explain plan output
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Hive is trying to embrace CBO(cost based optimizer) in latest versions, and Join is one major part of it. Understanding join best practices ...
18 comments:
Monday, November 17, 2014
Hive good readings.
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1. Optimizing Hive Query. 2. Hive join explanation. 3. Join Strategies in Hive 4. Hive tuning 5. CBO in Hive 0.14 6. Hive performance ...
Tuesday, November 11, 2014
Hive Locks -- Table/Partition Level
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Hive supports concurrency and table/partition level locks. Currently only "Share" and "Exclusive" locks are introduced...
3 comments:
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