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[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, 2014-08-12, 20:26
[HIVE-7569] Make sure multi-MR queries work - Hive - [issue]
...With the latest dev effort, queries that would involve multiple MR jobs should be supported by spark now, except for sorting, multi-insert, union, and join (map join and smb might just work)...
http://issues.apache.org/jira/browse/HIVE-7569    Author: Xuefu Zhang, 2014-08-12, 20:26
[HIVE-7492] Enhance SparkCollector - Hive - [issue]
...SparkCollector is used to collect the rows generated by HiveMapFunction or HiveReduceFunction. It currently is backed by a ArrayList, and thus has unbounded memory usage. Ideally, the collec...
http://issues.apache.org/jira/browse/HIVE-7492    Author: Xuefu Zhang, 2014-08-07, 22:57
Re: [jira] [Commented] (HIVE-7624) Reduce operator initialization failed when running multiple MR query on spark - Hive - [mail # dev]
...Another thing to watch is HiveConf's thread safety. I see it uses manystatic variables, but not sure if this the cause.On Tue, Aug 5, 2014 at 10:39 PM, Chao (JIRA)  wrote: ...
   Author: Xuefu Zhang, 2014-08-07, 00:51
[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, 2014-08-04, 22:33
[HIVE-7564] Remove some redundant code plus a bit of cleanup in SparkClient [Spark Branch] - Hive - [issue]
...NO PRECOMMIT TESTS. This is for spark branch only....
http://issues.apache.org/jira/browse/HIVE-7564    Author: Xuefu Zhang, 2014-07-31, 02:02
[HIVE-7556] Fix code style, license header, tabs, etc. [Spark Branch] - Hive - [issue]
...NO PRECOMMIT TESTS. This is for spark branch only....
http://issues.apache.org/jira/browse/HIVE-7556    Author: Xuefu Zhang, 2014-07-30, 20:23
[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-7489] Change ql/pom.xml to fix mvn project setup [Spark Branch] - Hive - [issue]
...In ql/pom.xml, spark dependency is specified as "provided" and optional. It seems that eclipse projects generated by maven doesn't including the dependency on those that are specified as "pr...
http://issues.apache.org/jira/browse/HIVE-7489    Author: Xuefu Zhang, 2014-07-23, 23:38
[HIVE-7371] Identify a minimum set of JARs needed to ship to Spark cluster [Spark Branch] - Hive - [issue]
...Currently, Spark client ships all Hive JARs, including those that Hive depends on, to Spark cluster when a query is executed by Spark. This is not efficient, causing potential library confli...
http://issues.apache.org/jira/browse/HIVE-7371    Author: Xuefu Zhang, 2014-07-18, 19:28
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