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[HIVE-7832] Do ORC dictionary check at a finer level and preserve encoding across stripes - Hive - [issue]
...Currently ORC dictionary check happens while writing the stripe. Just before writing stripe if ratio of dictionary entries to total non-null rows is greater than threshold then the dictionar...
http://issues.apache.org/jira/browse/HIVE-7832    Author: Prasanth J, 2014-09-02, 22:00
[HIVE-7904] Missing null check cause NPE when updating join column stats in statistics annotation - Hive - [issue]
...Column stats updation in join stats rule annotation can cause NPE if column stats is missing from one relation....
http://issues.apache.org/jira/browse/HIVE-7904    Author: Prasanth J, 2014-08-29, 08:42
[HIVE-7222] Support timestamp column statistics in ORC and extend PPD for timestamp - Hive - [issue]
...Add column statistics for timestamp columns in ORC. Also extend predicate pushdown to support timestamp column evaluation....
http://issues.apache.org/jira/browse/HIVE-7222    Author: Prasanth J, 2014-08-28, 01:28
[HIVE-7887] VectorFileSinkOp does not publish the stats correctly - Hive - [issue]
...VectorFSOp inherits FSOp, but the stats collection code in processOp() is out-of-date. Needs to be updated to be in sync with FSOp....
http://issues.apache.org/jira/browse/HIVE-7887    Author: Prasanth J, 2014-08-27, 18:01
[HIVE-7888] fix dynpart_sort_opt_vectorization.q test failure in trunk - Hive - [issue]
...Test is part of TestMiniTezCliDriverTest fails with the following exception[Error getting row data with exception java.lang.ClassCastException: org.apache.hadoop.hive.ql.exec.vector.DoubleCo...
http://issues.apache.org/jira/browse/HIVE-7888    Author: Prasanth J, 2014-08-27, 01:04
[HIVE-7548] Precondition checks should not fail the merge task in case of automatic trigger - Hive - [issue]
...ORC fast merge (HIVE-7509) will fail the merge task in case if any of the precondition checks fail. Precondition check fail is good for "ALTER TABLE .. CONCATENATE" but not for automatic tri...
http://issues.apache.org/jira/browse/HIVE-7548    Author: Prasanth J, 2014-08-26, 05:17
[HIVE-7865] Extend TestFileDump test case to printout ORC row index information - Hive - [issue]
...It will be good to have test case to printout ORC row index entries. Some changes to ORC format like HIVE-7832 uses different codepath to write row index entries. To make sure it is not doin...
http://issues.apache.org/jira/browse/HIVE-7865    Author: Prasanth J, 2014-08-25, 21:01
[HIVE-7704] Create tez task for fast file merging - Hive - [issue]
...Currently tez falls back to MR task for merge file task. It will beneficial to convert the merge file tasks to tez task to make use of the performance gains from tez....
http://issues.apache.org/jira/browse/HIVE-7704    Author: Prasanth J, 2014-08-25, 19:40
[HIVE-7833] Remove unwanted allocation in ORC RunLengthIntegerWriterV2 determine encoding function - Hive - [issue]
...RunLengthIntegerWriterV2.determineEncoding() is used heavily. There are unwanted buffer allocation for every invocation of the function which are not required....
http://issues.apache.org/jira/browse/HIVE-7833    Author: Prasanth J, 2014-08-22, 18:26
[HIVE-7836] Ease-out denominator for multi-attribute join case in statistics annotation - Hive - [issue]
...In cases where number of relations involved in join is less than the number of join attributes the denominator of join rule can get larger resulting in aggressive row count estimation....
http://issues.apache.org/jira/browse/HIVE-7836    Author: Prasanth J, 2014-08-22, 16:30
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