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[HIVE-270] Add a lazy-deserialized SerDe for space and cpu efficient serialization of rows with primitive types
...We want to add a lazy-deserialized SerDe for space and cpu efficient serialization of rows with primitive types.This SerDe will share the same format as MetadataTypedColumnsetSerDe/TCTLSepar...
, 2013-09-07, 14:51
[HIVE-268] "Insert Overwrite Directory" to accept configurable table row format
...There is no way for the users to control the file format when they are outputting the result into a directory.We should allow:INSERT OVERWRITE DIRECTORY "/user/zshao/result"ROW FORMAT DELIMI...
, 2013-06-07, 04:37
[HIVE-401] Reduce the ant test time to under 15 minutes
..."ant test" is taking too long. This is a big overhead for development since we need to do context switching all the time.We should bring the time back to under 15 minutes....
, 2012-12-28, 05:07
[HIVE-1133] Refactor InputFormat and OutputFormat for Hive
...Currently we ran into several problems of the FileInputFormat/OutputFormat in Hive.The requirements are:R1. We want to support HBase: HIVE-806R2. We want to selectively include files based o...
, 2012-11-02, 18:15
[HIVE-306] Support "INSERT [INTO] destination"
...Currently hive only supports "INSERT OVERWRITE destination". We should support "INSERT [INTO] destination"....
, 2012-10-23, 02:29
[HIVE-345] Extend Date UDFs to support time zone and full specs as in MySQL
...Most of the Date UDF in Hive now are based on String instead of Date objects, and they have limited functionality compared with MySQL.http://dev.mysql.com/doc/refman/5.1/en/date-and-time-fun...
, 2012-10-08, 05:23
[HIVE-757] Don't send constants from mapper to reducer for Group By queries
...If an aggregation function takes a constant expression, we are still sending it from mapper to reducer, but it's not necessary since we can compute the constants on the reducer side.This wil...
, 2012-09-28, 01:47
[HIVE-365] Create Table to support multiple levels of delimiters
...From HIVE-337, the SerDe layer now supports multiple-levels of delimiters, for the purpose of supporting nested map/array/struct.Array(the same as List) and struct consume a single level of ...
, 2012-07-10, 16:50
[HIVE-917] Bucketed Map Join
...Hive already have support for map-join. Map-join treats the big table as job input, and in each mapper, it loads all data from a small table.In case the big table is already bucketed on the ...
, 2012-06-21, 21:52
[HIVE-1106] Support "Alter table t add if not exists partition ..."
...It will be useful to add such a command so that users don't see an error when adding an existing partition....
, 2012-04-09, 20:44
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