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https://issues.apache.org/jira/browse/HIVE-3106?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13547835#comment-13547835
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Hudson commented on HIVE-3106:
------------------------------
Integrated in Hive-trunk-hadoop2 #54 (See
[https://builds.apache.org/job/Hive-trunk-hadoop2/54/])
HIVE-3106 Add option to make multi inserts more atomic
(Kevin Wilfong via namit) (Revision 1350792)
Result = ABORTED
namit : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1350792
Files :
* /hive/trunk/common/src/java/org/apache/hadoop/hive/conf/HiveConf.java
* /hive/trunk/conf/hive-default.xml.template
* /hive/trunk/ql/if/queryplan.thrift
* /hive/trunk/ql/src/gen/thrift/gen-cpp/queryplan_types.cpp
* /hive/trunk/ql/src/gen/thrift/gen-cpp/queryplan_types.h
*
/hive/trunk/ql/src/gen/thrift/gen-javabean/org/apache/hadoop/hive/ql/plan/api/StageType.java
* /hive/trunk/ql/src/gen/thrift/gen-php/queryplan/queryplan_types.php
* /hive/trunk/ql/src/gen/thrift/gen-py/queryplan/ttypes.py
* /hive/trunk/ql/src/gen/thrift/gen-rb/queryplan_types.rb
*
/hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/exec/DependencyCollectionTask.java
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/exec/TaskFactory.java
*
/hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/optimizer/GenMRFileSink1.java
*
/hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/optimizer/GenMRProcContext.java
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/parse/SemanticAnalyzer.java
*
/hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/plan/DependencyCollectionWork.java
*
/hive/trunk/ql/src/test/queries/clientpositive/multi_insert_move_tasks_share_dependencies.q
*
/hive/trunk/ql/src/test/results/clientpositive/multi_insert_move_tasks_share_dependencies.q.out
> Add option to make multi inserts more atomic
> --------------------------------------------
>
> Key: HIVE-3106
> URL: https://issues.apache.org/jira/browse/HIVE-3106
> Project: Hive
> Issue Type: Improvement
> Components: Query Processor
> Reporter: Kevin Wilfong
> Assignee: Kevin Wilfong
> Fix For: 0.10.0
>
> Attachments: HIVE-3106.1.patch.txt, HIVE-3106.2.patch.txt
>
>
> Currently, with multi-insert queries as soon the output of one of the inserts
> is ready the move task associated with that insert is run, creating the
> table/partition. However, if concurrency is enabled the lock on this
> table/partition is not released until the entire query finishes, which can be
> much later.
> This causes issues if, for example, a user is waiting for an output of the
> multi-insert query which is created long before the other outputs, and
> checking for it's existence using the metastore's Thrift methods
> (get_table/get_partition). In which case, the user will run their query
> which uses the output, and it will experience a timeout trying to acquire the
> lock on the table/partition.
> If all the move tasks depend on the parent's of all other move tasks, the
> output creation will be much closer to atomic relieving this problem.
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