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[HIVE-3276] optimize union sub-queries - Hive - [issue]
...It might be a good idea to optimize simple union queries containing map-reduce jobs in at least one of the sub-qeuries.For eg:a query like:insert overwrite table T1 partition P1select * from...
http://issues.apache.org/jira/browse/HIVE-3276    Author: Namit Jain, 2014-05-13, 11:17
[HIVE-3833] object inspectors should be initialized based on partition metadata - Hive - [issue]
...Currently, different partitions can be picked up for the same input split based on theserdes' etc. And, we dont allow to change the schema for LazyColumnarBinarySerDe.Instead of that, differ...
http://issues.apache.org/jira/browse/HIVE-3833    Author: Namit Jain, 2014-05-12, 16:47
[HIVE-1608] use sequencefile as the default for storing intermediate results - Hive - [issue]
...The only argument for having a text file for storing intermediate results seems to be better debuggability.But, tailing a sequence file is possible, and it should be more space efficient...
http://issues.apache.org/jira/browse/HIVE-1608    Author: Namit Jain, 2014-04-18, 22:25
[HIVE-3389] running tests for hadoop 23 - Hive - [issue]
http://issues.apache.org/jira/browse/HIVE-3389    Author: Namit Jain, 2014-03-24, 20:53
[HIVE-3598] physical optimizer changes for auto sort-merge join - Hive - [issue]
http://issues.apache.org/jira/browse/HIVE-3598    Author: Namit Jain, 2014-03-24, 20:52
[HIVE-3763] Aggregation followed by a sort-merge join requires a new MR job - Hive - [issue]
...After Hive-3633, if tbl1 and tbl2 are tables bucketiezed and sorted by key into 2 buckets, the following query:select count from (   select /+mapjoin(a)/ a.key as key, a.value as v...
http://issues.apache.org/jira/browse/HIVE-3763    Author: Namit Jain, 2014-03-24, 20:51
[HIVE-3892] auto sort merge join does not work for sub-queries - Hive - [issue]
...set hive.enforce.bucketing = true;set hive.enforce.sorting = true;set hive.exec.reducers.max = 1;CREATE TABLE tbl1(key int, value string) CLUSTERED BY (key) SORTED BY (key) INTO 2 BUCKETS;CR...
http://issues.apache.org/jira/browse/HIVE-3892    Author: Namit Jain, 2014-03-24, 20:50
[HIVE-3777] add a property in the partition to figure out if stats are accurate - Hive - [issue]
...Currently, stats task tries to update the statistics in the table/partitionbeing updated after the table/partition is loaded. In case of a failure to update these stats (due to the any reaso...
http://issues.apache.org/jira/browse/HIVE-3777    Author: Namit Jain, 2014-03-15, 22:32
[HIVE-1653] Ability to enforce correct stats - Hive - [issue]
...This is a follow-up for https://issues.apache.org/jira/browse/HIVE-1361.If one of the mappers/reducers cannot publish stats, it may lead to wrong aggregated stats.There should be a way to av...
http://issues.apache.org/jira/browse/HIVE-1653    Author: Namit Jain, 2014-03-15, 21:50
[HIVE-1083] allow sub-directories for an external table/partition - Hive - [issue]
...Sometimes users want to define an external table/partition based on all files (recursively) inside a directory.Currently most of the Hadoop InputFormat classes do not support that. We should...
http://issues.apache.org/jira/browse/HIVE-1083    Author: Namit Jain, 2014-03-04, 07:36
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