Any known issues on Hive 1.2.1 performance with date and timestamp data types?

sunile_manjee — Thu, 25 Feb 2016 06:50:26 GMT

Any known issues on Hive 1.2.1 performance with date and timestamp data types? Any issues? Any guidance anyone can provide?

Re: Any known issues on Hive 1.2.1 performance with date and timestamp data types?

nsabharwal — Thu, 25 Feb 2016 08:22:27 GMT

You can go here and look for tickets realted to performance.

nsabharwal — Thu, 25 Feb 2016 08:24:38 GMT

More information..

It may not be direct answer because your question is very broad.

Grace hash join algorithm for Hive so that Map Joins use disk on overflow instead of failing (HIVE-9277)
Predicate PushDown enhancements (HIVE-9069)
Improvements in stats for better MapJoin selection, Reducer Parallelism (HIVE-9392, HIVE-10107)
Count Distinct Performance Improvements (HIVE-10568)
CBO – Better Windowing support (HIVE-10627, HIVE-10686)
Changes to comply with SQL:2011 standard for reserved/non-reserved keywords (HIVE-6617)
Caching of statistics in HiveServer2 (HIVE-10382)
Improve performance of Vector Map Join by using more vectorization techniques (HIVE-9937, HIVE-9824 )