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Re: Partition performance - Hive - [mail # user]
...On Wed, Jul 3, 2013 at 5:19 AM, David Morel  wrote:   According to Gopal's investigations in https://issues.apache.org/jira/browse/HIVE-4051, each time Hive plans a query, it does ...
   Author: Owen O'Malley, 2013-07-03, 14:56
[HIVE-4753] ORC indexes should include the length of the data to read - Hive - [issue]
...ORC indexes should include the length of data that must be read in each stream for the rows associated with that entry....
http://issues.apache.org/jira/browse/HIVE-4753    Author: Owen O'Malley, 2013-06-18, 22:43
Re: OrcFile writing failing with multiple threads - Hive - [mail # user]
...Sorry for dropping this thread for so long. Are you using the orc.Writer interface directly or going through the OrcOutputFormat? I forgot that I had updated the Writer to synchronize things...
   Author: Owen O'Malley, 2013-06-11, 17:00
[HIVE-4698] ORC's file footer should include the encodings of the columns - Hive - [issue]
...To ensure that a reader won't get surprised by the column encodings in the stripes, it would be good to include the set of encodings for each column in the file footer....
http://issues.apache.org/jira/browse/HIVE-4698    Author: Owen O'Malley, 2013-06-10, 21:23
Re: Create table like with partitions - Hive - [mail # user]
...You need to create the partitioned table and then copy the rows into it.  create table foo_staging (int x, int y);  create table foo(int x) partitioned by (int y) clustered by (x) ...
   Author: Owen O'Malley, 2013-06-10, 14:06
Re: Using JSON Data with Hive - Hive - [mail # user]
...You might look at Russell's blog about using JSON in Hive:  http://hortonworks.com/blog/discovering-hive-schema-in-collections-of-json-documents/   On Fri, Jun 7, 2013 at 8:24 AM, ...
   Author: Owen O'Malley, 2013-06-07, 18:45
[HIVE-4639] Add has null flag to ORC internal index - Hive - [issue]
...It would enable more predicate pushdown if we added a flag to the index entry recording if there were any null values in the column for the 10k rows....
http://issues.apache.org/jira/browse/HIVE-4639    Author: Owen O'Malley, 2013-06-04, 23:12
[HIVE-4634] Add hasNull flag to ORC index - Hive - [issue]
...It would help the predicate pushdown, if the index recorded whether each 10k rows had null values in that column....
http://issues.apache.org/jira/browse/HIVE-4634    Author: Owen O'Malley, 2013-06-04, 23:01
Re: 0.9.1 branch. - Hive - [mail # dev]
...https://github.com/apache/hive/commit/e42ec89b31ae056e51d8db25d4ecc1a8a51212e0   On Mon, Jun 3, 2013 at 12:10 PM, ur lops  wrote:  ...
   Author: Owen O'Malley, 2013-06-03, 10:20
Re: Accessing Table Properies from InputFormat - Hive - [mail # user]
...On Tue, May 28, 2013 at 9:27 AM, Edward Capriolo wrote:   I don't view columnar or self describing data-types as an edge case. I think in a couple years, the various columnar stores (OR...
   Author: Owen O'Malley, 2013-05-28, 17:31
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