You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2015/12/10 03:58:11 UTC
[jira] [Assigned] (SPARK-12253) UnifiedMemoryManager race
condition: storage can starve new tasks
[ https://issues.apache.org/jira/browse/SPARK-12253?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Apache Spark reassigned SPARK-12253:
------------------------------------
Assignee: Andrew Or (was: Apache Spark)
> UnifiedMemoryManager race condition: storage can starve new tasks
> -----------------------------------------------------------------
>
> Key: SPARK-12253
> URL: https://issues.apache.org/jira/browse/SPARK-12253
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 1.6.0
> Reporter: Andrew Or
> Assignee: Andrew Or
> Priority: Blocker
>
> The following race condition is possible with the existing code in unified memory management:
> (1) Existing tasks collectively occupy all execution memory
> (2) New task comes in and blocks while existing tasks spill
> (3) After tasks finish spilling, another task jumps in and puts in a large block, stealing the freed memory
> (4) New task still cannot acquire memory and goes back to sleep
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org