hive-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Xuefu Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-9258) Explain query shouldn't launch a Spark application [Spark Branch]
Date Tue, 06 Jan 2015 02:42:34 GMT
Xuefu Zhang created HIVE-9258:
---------------------------------

             Summary: Explain query shouldn't launch a Spark application [Spark Branch]
                 Key: HIVE-9258
                 URL: https://issues.apache.org/jira/browse/HIVE-9258
             Project: Hive
          Issue Type: Sub-task
          Components: Spark
            Reporter: Xuefu Zhang


Currently for Hive on Spark, query plan includes the number of reducers, which is determined
partly by the Spark cluster. Thus, explain query will need to launch a Spark application (Spark
remote context), which is costly. To make things worse, the application is discarded right
way.

Ideally, we shouldn't launch a Spark application even for an explain query.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message