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From "Jimmy Xiang (JIRA)" <>
Subject [jira] [Commented] (HIVE-12538) After set spark related config, SparkSession never get reused
Date Wed, 02 Dec 2015 19:37:11 GMT


Jimmy Xiang commented on HIVE-12538:

Patch v2 looks good to me. No need to use ConcurrentHashMap since you use synchronized already,
For SparkUtilities#getSparkSession(), probably we just need to synchronize on the session
level conf.

> After set spark related config, SparkSession never get reused
> -------------------------------------------------------------
>                 Key: HIVE-12538
>                 URL:
>             Project: Hive
>          Issue Type: Bug
>          Components: Spark
>    Affects Versions: 1.3.0
>            Reporter: Nemon Lou
>            Assignee: Nemon Lou
>         Attachments: HIVE-12538.1.patch, HIVE-12538.2.patch, HIVE-12538.3.patch, HIVE-12538.patch
> Hive on Spark yarn-cluster mode.
> After setting "set spark.yarn.queue=QueueA;" ,
> run the query "select count(*) from test"  3 times and you will find  3 different yarn
> Two of the yarn applications in FINISHED & SUCCEEDED state,and one in RUNNING &
UNDEFINED state waiting for next work.
> And if you submit one more "select count(*) from test" ,the third one will be in FINISHED
& SUCCEEDED state and a new yarn application will start up.

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