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[HIVE-7060] Column stats give incorrect min and distinct_count - Hive - [issue]
...It seems that the result from column statistics isn't correct on two measures for numeric columns: min (which is always 0) and distinct count. Here is an example:select count(distinct avgTim...
http://issues.apache.org/jira/browse/HIVE-7060    Author: Xuefu Zhang, 2014-06-03, 06:28
[HIVE-7149] Parquet not able to handle negative decimal numbers - Hive - [issue]
...Because of storing decimal numbers as fixed length bytes, Parquet Serde pads leading zeros for decimal numbers that has less bytes representation. This works fine for positive decimals, but ...
http://issues.apache.org/jira/browse/HIVE-7149    Author: Xuefu Zhang, 2014-06-01, 15:29
[HIVE-7123] Follow-up of HIVE-6367 - Hive - [issue]
...HIVE-6367 provides initial decimal support in Parquet serde. The are a few minor items left over:1. parquet_decimal.q seems failing2. will use fixed length binary to encode decimal instead o...
http://issues.apache.org/jira/browse/HIVE-7123    Author: Xuefu Zhang, 2014-05-30, 02:35
[HIVE-5565] Limit Hive decimal type maximum precision and scale to 38 - Hive - [issue]
...With HIVE-3976, the maximum precision is set to 65, and maximum scale is to 30. After discussing with several folks in the community, it's determined that 38 as a maximum for both precision ...
http://issues.apache.org/jira/browse/HIVE-5565    Author: Xuefu Zhang, 2014-05-18, 08:35
[HIVE-6328] Hive script should not overwrite AUX_CLASSPATH with HIVE_AUX_JARS_PATH if the latter is set - Hive - [issue]
...Hive script (bin/hive) replaces the value of AUX_CLASSPATH with the value of HIVE_AUX_JARS_PATH if HIVE_AUX_JARS_PATH is defined. This is not desirable because user uses the former to includ...
http://issues.apache.org/jira/browse/HIVE-6328    Author: Xuefu Zhang, 2014-05-17, 09:36
[expand - 1 more] - Re: showing column stats - Hive - [mail # dev]
...Thanks, Prasanth. I tried your patch in HIVE-7050, and it helped medemonstrate another problem related to stats, HIVE-7053.I can review your patches. Thanks again!On Mon, May 12, 2014 at 6:5...
   Author: Xuefu Zhang, 2014-05-13, 22:58
[HIVE-6901] Explain plan doesn't show operator tree for the fetch operator - Hive - [issue]
...Explaining a simple select query that involves a MR phase doesn't show processor tree for the fetch operator.hive> explain select d from test;OKSTAGE DEPENDENCIES:  Stage-1 is a...
http://issues.apache.org/jira/browse/HIVE-6901    Author: Xuefu Zhang, 2014-05-13, 17:36
[HIVE-5298] AvroSerde performance problem caused by HIVE-3833 - Hive - [issue]
...HIVE-3833 fixed the targeted problem and made Hive to use partition-level metadata to initialize object inspector. In doing that, however, it goes thru every file under the table to access t...
http://issues.apache.org/jira/browse/HIVE-5298    Author: Xuefu Zhang, 2014-05-10, 06:35
[HIVE-5848] Hive's type promotion isn't correct - Hive - [issue]
...When dealing with union all, arithmetic operators, and other places when type promotion is needed or a common type is determined, Hive would promote non-exact data types (float and double) t...
http://issues.apache.org/jira/browse/HIVE-5848    Author: Xuefu Zhang, 2014-05-08, 08:39
[HIVE-5408] Method matching needs to be improved in NumericOpMethodResolver to suport decimal type with parameters - Hive - [issue]
...For non-generic UDFs, java reflection is used to determine which evaluate() is to be used for given input expressions. For this, method's argument type is matched against the expression's ty...
http://issues.apache.org/jira/browse/HIVE-5408    Author: Xuefu Zhang, 2014-05-08, 07:21
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