Davies Liu created SPARK-10494:
----------------------------------
Summary: Multiple Python UDFs together with aggregation or sort
merge join may cause OOM (failed to acquire memory)
Key: SPARK-10494
URL: https://issues.apache.org/jira/browse/SPARK-10494
Project: Spark
Issue Type: Bug
Components: PySpark, SQL
Affects Versions: 1.5.0
Reporter: Davies Liu
Priority: Critical
The RDD cache for Python UDF is removed in 1.4, then N Python UDFs in one query
stage could end up evaluate upstream (SparkPlan) 2^N times.
In 1.5, If there is aggregation or sort merge join in upstream SparkPlan, they
will cause OOM (failed to acquire memory).
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
