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[HIVE-7438] Counters, statistics, and metrics [Spark Branch] - Hive - [issue]
...Hive makes use of MapReduce counters for statistics and possibly for other purposes. For Hive on Spark, we should achieve the same functionality using Spark's accumulators.Hive also collects...
http://issues.apache.org/jira/browse/HIVE-7438    Author: Xuefu Zhang, 2014-08-27, 15:56
[HIVE-7384] Research into reduce-side join [Spark Branch] - Hive - [issue]
...Hive's join operator is very sophisticated, especially for reduce-side join. While we expect that other types of join, such as map-side join and SMB map-side join, will work out of the box w...
http://issues.apache.org/jira/browse/HIVE-7384    Author: Xuefu Zhang, 2014-08-22, 22:54
[HIVE-7593] Instantiate SparkClient per user session [Spark Branch] - Hive - [issue]
...SparkContext is the main class via which Hive talk to Spark cluster. SparkClient encapsulates a SparkContext instance. Currently all user sessions share a single SparkClient instance in Hive...
http://issues.apache.org/jira/browse/HIVE-7593    Author: Xuefu Zhang, 2014-08-22, 10:07
[HIVE-7334] Create SparkShuffler, shuffling data between map-side data processing and reduce-side processing [Spark Branch] - Hive - [issue]
...Please refer to the design spec....
http://issues.apache.org/jira/browse/HIVE-7334    Author: Xuefu Zhang, 2014-08-19, 04:28
[HIVE-7528] Support cluster by and distributed by [Spark Branch] - 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, 2014-08-19, 04:10
[HIVE-7527] Support order by and sort by on Spark [Spark Branch] - 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, 2014-08-19, 02:42
[HIVE-7530] Go thru the common code to find references to HIVE_EXECUCTION_ENGINE to make sure conditions works with Spark [Spark Branch] - 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, 2014-08-19, 01:21
[HIVE-7516] Add capacity control over queries running on Spark cluster [Spark Branch] - Hive - [issue]
...Add a capacity control mechanism in Hive to limit the number queries running on Spark concurrently which might overwhelm the cluster. Idea can be borrowed from Tez....
http://issues.apache.org/jira/browse/HIVE-7516    Author: Xuefu Zhang, 2014-08-18, 21:27
[HIVE-7541] Support union all on Spark [Spark Branch] - Hive - [issue]
...For union all operator, we will use Spark's union transformation. Refer to the design doc on wiki for more information....
http://issues.apache.org/jira/browse/HIVE-7541    Author: Xuefu Zhang, 2014-08-18, 18:36
[HIVE-7329] Create SparkWork [Spark Branch] - Hive - [issue]
...This class encapsulates all the work objects that can be executed in a single Spark job.NO PRECOMMIT TESTS. This is for spark branch only....
http://issues.apache.org/jira/browse/HIVE-7329    Author: Xuefu Zhang, 2014-08-18, 17:55
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