Cheng Hao created SPARK-3198:
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Summary: Improve the expression id generation algorithm
Key: SPARK-3198
URL: https://issues.apache.org/jira/browse/SPARK-3198
Project: Spark
Issue Type: Sub-task
Components: SQL
Reporter: Cheng Hao
Currently, Catalyst harnesses the AtomicLong for the expression id generation
algorithm, which reduce the performance dramatically in a multithread env.
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