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[HIVE-6578] Use ORC file footer statistics through StatsProvidingRecordReader interface for analyze command - Hive - [issue]
...ORC provides file level statistics which can be used in analyze partialscan and noscan cases to compute basic statistics like number of rows, number of files, total file size and raw data si...
http://issues.apache.org/jira/browse/HIVE-6578    Author: Prasanth J, 2014-07-21, 06:27
[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-7231] Improve ORC padding - Hive - [issue]
...Current ORC padding is not optimal because of fixed stripe sizes within block. The padding overhead will be significant in some cases. Also padding percentage relative to stripe size is not ...
http://issues.apache.org/jira/browse/HIVE-7231    Author: Prasanth J, 2014-07-07, 08:18
[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, 2014-07-02, 08:50
[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
[HIVE-7051] Display partition level column stats in DESCRIBE EXTENDED/FORMATTED PARTITION - Hive - [issue]
...Same as HIVE-7050 but for partitions...
http://issues.apache.org/jira/browse/HIVE-7051    Author: Prasanth J, 2014-06-23, 10:05
[HIVE-7250] Adaptive compression buffer size for wide tables in ORC - Hive - [issue]
...If the input table is wide (in the order of 1000s), ORC compression buffer size overhead becomes significant causing OOM issues. To overcome this issue, buffer size should be adaptively chos...
http://issues.apache.org/jira/browse/HIVE-7250    Author: Prasanth J, 2014-06-20, 08:54
[HIVE-7219] Improve performance of serialization utils in ORC - Hive - [issue]
...ORC uses serialization utils heavily for reading and writing data. The bitpacking and unpacking code in writeInts() and readInts() can be unrolled for better performance. Also double reader/...
http://issues.apache.org/jira/browse/HIVE-7219    Author: Prasanth J, 2014-06-19, 20:56
[HIVE-7050] Display table level column stats in DESCRIBE EXTENDED/FORMATTED TABLE - Hive - [issue]
...There is currently no way to display the column level stats from hive CLI. It will be good to show them in DESCRIBE EXTENDED/FORMATTED TABLE...
http://issues.apache.org/jira/browse/HIVE-7050    Author: Prasanth J, 2014-06-13, 10:37
[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, 2014-06-12, 03:56
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