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[HIVE-7338] Create SparkPlanGenerator - Hive - [issue]
...Translate SparkWork into SparkPlan. The translation may be invoked by SparkClient when executing SparkTask.NO PRECOMMIT TESTS. This is for spark branch only....
http://issues.apache.org/jira/browse/HIVE-7338    Author: Xuefu Zhang, 2014-07-29, 11:18
[HIVE-7292] Hive on Spark - Hive - [issue]
...Spark as an open-source data analytics cluster computing framework has gained significant momentum recently. Many Hive users already have Spark installed as their computing backbone. To take...
http://issues.apache.org/jira/browse/HIVE-7292    Author: Xuefu Zhang, 2014-07-29, 11:14
[HIVE-7373] Hive should not remove trailing zeros for decimal numbers - Hive - [issue]
...Currently Hive blindly removes trailing zeros of a decimal input number as sort of standardization. This is questionable in theory and problematic in practice.1. In decimal context,  nu...
http://issues.apache.org/jira/browse/HIVE-7373    Author: Xuefu Zhang, 2014-07-29, 02:22
[HIVE-7526] Research to use groupby transformation to replace Hive existing partitionByKey and SparkCollector combination - Hive - [issue]
...Currently SparkClient shuffles data by calling paritionByKey(). This transformation outputs <key, value> tuples. However, Hive's ExecMapper expects <key, iterator<value>> t...
http://issues.apache.org/jira/browse/HIVE-7526    Author: Xuefu Zhang, 2014-07-28, 23:33
[HIVE-5872] Make UDAFs such as GenericUDAFSum report accurate precision/scale for decimal types - Hive - [issue]
...Currently UDAFs are still reporting system default precision/scale (38, 18) for decimal results. Not only this is coarse, but also this can cause problems in subsequent operators such as div...
http://issues.apache.org/jira/browse/HIVE-5872    Author: Xuefu Zhang, 2014-07-28, 15:04
[HIVE-7527] Support order by and sort by on Spark - Hive - [issue]
...Currently Hive depends completely on MapReduce's sorting as part of shuffling to achieve order by (global sort, one reducer) and sort by (local sort).Spark has a sort by transformation in di...
http://issues.apache.org/jira/browse/HIVE-7527    Author: Xuefu Zhang, 2014-07-28, 13:36
[HIVE-7530] Go thru the common code to find references to HIVE_EXECUCTION_ENGINE to make sure conditions works with Spark - Hive - [issue]
...In common code, such as Utilities.java, I found a lot of references to this conf variable and special handling to a specific engine such as following:          ...
http://issues.apache.org/jira/browse/HIVE-7530    Author: Xuefu Zhang, 2014-07-28, 09:13
[HIVE-7528] Support cluster by and distributed by - Hive - [issue]
...clustered by = distributed by + sort by, so this is related to HIVE-7527. If sort by is in place, the assumption is that we don't need to do anything about distributed by or clustered by. St...
http://issues.apache.org/jira/browse/HIVE-7528    Author: Xuefu Zhang, 2014-07-27, 23:38
[HIVE-7493] Enhance HiveReduceFunction's row clustering - Hive - [issue]
...HiveReduceFunction is backed by Hive's ExecReducer, whose reduce function takes an input in the form of <key, value list>. However, HiveReduceFunction's input is an iterator over a set...
http://issues.apache.org/jira/browse/HIVE-7493    Author: Xuefu Zhang, 2014-07-27, 21:18
[HIVE-7503] Support Hive's multi-table insert query with Spark - Hive - [issue]
...For Hive's multi insert query (https://cwiki.apache.org/confluence/display/Hive/LanguageManual+DML), there may be an MR job for each insert.  When we achieve this with Spark, it would b...
http://issues.apache.org/jira/browse/HIVE-7503    Author: Xuefu Zhang, 2014-07-27, 21:03
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