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[HIVE-6382] PATCHED_BLOB encoding in ORC will corrupt data in some cases - Hive - [issue]
...In PATCHED_BLOB encoding (added in HIVE-4123), gapVsPatchList is an array of long that stores gap (g) between the values that are patched and the patch value (p). The maximum distance of gap...
http://issues.apache.org/jira/browse/HIVE-6382    Author: Prasanth J, 2014-07-31, 19:44
[HIVE-6711] ORC maps uses getMapSize() from MapOI which is unreliable - Hive - [issue]
...HIVE-6707 had issues with map size. getMapSize() of LazyMap and LazyBinaryMap does not deserialize the keys and count the number of unique keys. Since getMapSize() may return non-distinct co...
http://issues.apache.org/jira/browse/HIVE-6711    Author: Prasanth J, 2014-07-31, 19:39
[HIVE-7509] Fast stripe level merging for ORC - Hive - [issue]
...Similar to HIVE-1950, add support for fast stripe level merging of ORC files through CONCATENATE command and conditional merge task. This fast merging is ideal for merging many small ORC fil...
http://issues.apache.org/jira/browse/HIVE-7509    Author: Prasanth J, 2014-07-31, 01:10
[HIVE-7536] Make use of decimal column statistics in statistics annotation - Hive - [issue]
...HIVE-6701 added decimal column statistics. The statistics annotation optimizer should make use of decimal column statistics as well....
http://issues.apache.org/jira/browse/HIVE-7536    Author: Prasanth J, 2014-07-29, 23:45
[HIVE-7535] Make use of number of nulls column statistics in filter rule - Hive - [issue]
...The filter rule does not make use of number of nulls column statistics for "IS NULL" and "IS NOT NULL" expression evaluation....
http://issues.apache.org/jira/browse/HIVE-7535    Author: Prasanth J, 2014-07-29, 23:25
[HIVE-7491] Stats annotation fails to evaluate constant expressions in filter operator - Hive - [issue]
...HIVE-5369 added stats annotation to operator plan. The filter operator evaluates all expression node descriptors and applies rules. It always returns 0 for constant expressions like 'select ...
http://issues.apache.org/jira/browse/HIVE-7491    Author: Prasanth J, 2014-07-24, 23:01
[HIVE-7495] Print dictionary size in orc file dump - Hive - [issue]
...DICTIONARY_V2 fails to print dictionary size in file dump....
http://issues.apache.org/jira/browse/HIVE-7495    Author: Prasanth J, 2014-07-24, 19:34
[HIVE-7494] ORC returns empty rows for constant folded date queries - Hive - [issue]
...For queries likeselect * from table where d = date '1970-02-01'ORC returns empty rows....
http://issues.apache.org/jira/browse/HIVE-7494    Author: Prasanth J, 2014-07-24, 16:50
[HIVE-7243] Print padding information in ORC file dump - Hive - [issue]
...It will be useful to print the padding information in orc file dump utility....
http://issues.apache.org/jira/browse/HIVE-7243    Author: Prasanth J, 2014-07-14, 19:12
[HIVE-6455] Scalable dynamic partitioning and bucketing optimization - Hive - [issue]
...The current implementation of dynamic partition works by keeping at least one record writer open per dynamic partition directory. In case of bucketing there can be multispray file writers wh...
http://issues.apache.org/jira/browse/HIVE-6455    Author: Prasanth J, 2014-06-30, 01:31
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