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-16552) Limit the number of tasks a Spark job may contain
Date Thu, 27 Apr 2017 20:07:04 GMT
Xuefu Zhang created HIVE-16552:
----------------------------------

             Summary: Limit the number of tasks a Spark job may contain
                 Key: HIVE-16552
                 URL: https://issues.apache.org/jira/browse/HIVE-16552
             Project: Hive
          Issue Type: Improvement
          Components: Spark
            Reporter: Xuefu Zhang
            Assignee: Xuefu Zhang


It's commonly desirable to block bad and big queries that takes a lot of YARN resources. One
approach, similar to mapreduce.job.max.map in MapReduce, is to stop a query that invokes a
Spark job that contains too many tasks. The proposal here is to introduce hive.spark.job.max.tasks
with a default value of -1 (no limit), which an admin can set to block queries that trigger
too many spark tasks.

Please note that this control knob applies to a spark job, though it's possible that one query
can trigger multiple Spark jobs (such as in case of map-join). Nevertheless, the proposed
approach is still helpful.



--
This message was sent by Atlassian JIRA
(v6.3.15#6346)

Mime
View raw message