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[HIVE-4758] NULLs and record separators broken with vectorization branch intermediate outputs - Hive - [issue]
...Queries of type timestamp on partitioned tables return NULL for all rows of timestamp columns, if the first row in the column is NULL.This was tracked down to the failure of timestamp column...
http://issues.apache.org/jira/browse/HIVE-4758    Author: Gopal V, 2013-06-19, 23:06
[HIVE-4699] Integrate basic UDFs for Timesamp - Hive - [issue]
...Integrated the timestamp UDFs from HIVE-4608, to be able to use the following TO_UNIX_TIMESTAMP(ts), year(ts),month(ts),weekofyear(ts),dayofmonth(ts),hour(ts),minute(ts),second(ts)in queries...
http://issues.apache.org/jira/browse/HIVE-4699    Author: Gopal V, 2013-06-14, 22:58
[HIVE-4608] Vectorized UDFs for Timestamp in nanoseconds - Hive - [issue]
...Vectorized UDFs for timestamp functions which accept long vectorsVectorUDFYearLong   VectorUDFMonthLongVectorUDFWeekOfYearLong   VectorUDFDayOfMonthLongVectorUDFHourLong   Vec...
http://issues.apache.org/jira/browse/HIVE-4608    Author: Gopal V, 2013-06-04, 14:41
[expand - 2 more] - Re: Review Request: Vectorized Timestamp functions for long nanosecond based timestamps - Hive - [mail # dev]
...This is an automatically generated e-mail. To reply, visit: https://reviews.apache.org/r/11530/  (Updated May 31, 2013, 1:59 p.m.)   Review request for hive, Jitendra Pandey and Er...
   Author: Gopal V, 2013-05-31, 13:59
[HIVE-4486] FetchOperator slows down SMB map joins by 50% when there are many partitions - Hive - [issue]
...While looking at log files for SMB joins in hive, it was noticed that the actual join op didn't show up as a significant fraction of the time spent. Most of the time was spent parsing config...
http://issues.apache.org/jira/browse/HIVE-4486    Author: Gopal V, 2013-05-18, 06:17
[HIVE-3992] Hive RCFile::sync(long) does a sub-sequence linear search for sync blocks - Hive - [issue]
...The following function does some bad I/Opublic synchronized void sync(long position) throws IOException {  ...      try {        seek(p...
http://issues.apache.org/jira/browse/HIVE-3992    Author: Gopal V, 2013-05-16, 22:11
[HIVE-4488] BucketizedHiveInputFormat is pessimistic with SMB split generation - Hive - [issue]
...BucketizedHiveInputFormat generates fewer splits than possible when faced with a table structure where both tables are partitioned.When debugging query82 from the TPC-DS spec, there were 7 p...
http://issues.apache.org/jira/browse/HIVE-4488    Author: Gopal V, 2013-05-03, 15:20
Review Request: Improve RCFile::sync(long) by 10x - Hive - [mail # dev]
...This is an automatically generated e-mail. To reply, visit: https://reviews.apache.org/r/10795/  Review request for hive, Ashutosh Chauhan and Gunther Hagleitner.   Description &nb...
   Author: Gopal V, 2013-04-26, 11:25
[HIVE-4103] Remove System.gc() call from the map-join local-task loop - Hive - [issue]
...Hive's HashMapWrapper calls System.gc() twice within the HashMapWrapper::isAbort() which produces a significant slow-down during the loop.2013-03-01 04:54:28 The gc calls took 677 ms2013-03-...
http://issues.apache.org/jira/browse/HIVE-4103    Author: Gopal V, 2013-04-24, 22:07
[HIVE-4318] OperatorHooks hit performance even when not used - Hive - [issue]
...Operator Hooks inserted into Operator.java cause a performance hit even when it is not being used.For a count(1) query tested with & without the operator hook calls.with2013-04-09 07:33:...
http://issues.apache.org/jira/browse/HIVE-4318    Author: Gopal V, 2013-04-24, 22:02
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