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[HIVE-8701] Combine nested map joins into the parent map join if possible [Spark Branch] - Hive - [issue]
...With the work in HIVE-8616 enabled, the generated plan shows that the nested map join operator isn't merged to its parent when possible. This is demonstrated in auto_join2.q. The MR plan sho...
http://issues.apache.org/jira/browse/HIVE-8701    Author: Xuefu Zhang, 2014-11-21, 18:56
[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, 2014-11-20, 09:35
[HIVE-8858] Visualize generated Spark plan [Spark Branch] - Hive - [issue]
...The spark plan generated by SparkPlanGenerator contains info which isn't available in Hive's explain plan, such as RDD caching. Also, the graph is slight different from orignal SparkWork. Th...
http://issues.apache.org/jira/browse/HIVE-8858    Author: Xuefu Zhang, 2014-11-17, 19:25
[HIVE-8844] Choose a persisent policy for RDD caching [Spark Branch] - Hive - [issue]
...RDD caching is used for performance reasons in some multi-insert queries. Currently, we call RDD.cache(), which indicates a persistency policy of using memory only. We should choose a better...
http://issues.apache.org/jira/browse/HIVE-8844    Author: Xuefu Zhang, 2014-11-15, 19:46
[HIVE-8840] Print prettier Spark work graph after HIVE-8793 [Spark Branch] - Hive - [issue]
...Because of HIVE-8793, the work graph for Spark is possibly modified by SplitSparkWorkResolver.  Original:    Spark      Edges:     &nbs...
http://issues.apache.org/jira/browse/HIVE-8840    Author: Xuefu Zhang, 2014-11-14, 21:49
[HIVE-8878] Downgrade guava version to be consistent with Hive and the rest of Hadoop [Spark Branch] - Hive - [issue]
...While the issue was introduced in day 1 (HIVE-7370), current Spark branch has higher guava version (14) than Hive (11). This may cause issues when we merge back. We need to downgrade it, but...
http://issues.apache.org/jira/browse/HIVE-8878    Author: Xuefu Zhang, 2014-11-14, 20:53
Re: Beeline equivalent of "set" - Hive - [mail # dev]
...Hi Lefty,My blog post [1] below might help answer your question.Thanks,Xuefu[1]http://blog.cloudera.com/blog/2014/02/migrating-from-hive-cli-to-beeline-a-primer/On Fri, Nov 14, 2014 at 1:29 ...
   Author: Xuefu Zhang, 2014-11-14, 18:21
[HIVE-8718] Refactoring: move mapLocalWork field from MapWork to BaseWork - Hive - [issue]
...Currently MapRedLocalWork instance is a field at MapWork. This is MR specific where small table input to map join is always from a MapWork, which isn't true for other execution engine where ...
http://issues.apache.org/jira/browse/HIVE-8718    Author: Xuefu Zhang, 2014-11-14, 15:23
[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, 2014-11-14, 04:31
[HIVE-8841] Make RDD caching work for multi-insert after HIVE-8793 when map join is involved [Spark Branch] - Hive - [issue]
...Splitting SparkWork now happens before MapJoinResolver. As MapJoinResolve may further spins off a dependent SparkWork for small tables of a join, we need to make Spark RDD caching continue w...
http://issues.apache.org/jira/browse/HIVE-8841    Author: Xuefu Zhang, 2014-11-14, 01:44
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB