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[HIVE-537] Hive TypeInfo/ObjectInspector to support union (besides struct, array, and map)
...There are already some cases inside the code that we use heterogeneous data: JoinOperator, and UnionOperator (in the sense that different parents can pass in records with different ObjectIns...
, 2013-11-14, 03:32
[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-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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