Supun Nakandala created SPARK-42162:
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Summary: Memory usage on executors increased drastically for a
complex query with large number of addition operations
Key: SPARK-42162
URL: https://issues.apache.org/jira/browse/SPARK-42162
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 3.3.0
Reporter: Supun Nakandala
With the [recent changes|https://github.com/apache/spark/pull/37851] in the
expression canonicalization, a complex query with a large number of Add
operations ends up consuming 10x more memory on the executors.
A heap histogram analysis shows that a large number of Add objects use the
extra memory.
Before the PR [#37851|https://github.com/apache/spark/pull/37851], this issue
does not happen.
The high memory usage causes the executors to lose heartbeat signals and cause
task failures.
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