Ziqi Liu created SPARK-44485:
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Summary: optimize generateTreeString code path
Key: SPARK-44485
URL: https://issues.apache.org/jira/browse/SPARK-44485
Project: Spark
Issue Type: Improvement
Components: Spark Core
Affects Versions: 3.4.1
Reporter: Ziqi Liu
In `TreeNode.generateTreeString`, we observed inefficiency in scala collection
operations and virtual function call.
This inefficiency become significant in large plan (we hit a example of more
than 1000 nodes). So {*}it’s worth optimizing the super hot code path{*}. By
rewriting into native Java code(not so sweet as scala syntax sugar though), we
should be able to get rid of most of the overhead.
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