[
https://issues.apache.org/jira/browse/SPARK-27041?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Sean Owen reassigned SPARK-27041:
---------------------------------
Assignee: David Yang
> large partition data cause pyspark with python2.x oom
> -----------------------------------------------------
>
> Key: SPARK-27041
> URL: https://issues.apache.org/jira/browse/SPARK-27041
> Project: Spark
> Issue Type: Bug
> Components: PySpark
> Affects Versions: 2.4.0
> Reporter: David Yang
> Assignee: David Yang
> Priority: Major
>
> With large partition, pyspark may exceeds executor memory limit and trigger
> out of memory for python 2.7.
> This is because map() is used. Unlike in python3.x, python 2.7 map() will
> generate a list and need to read all data into memory.
> The proposed fix will use imap in python 2.7 and it has been verified.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org
For additional commands, e-mail: issues-h...@spark.apache.org
