Ryan Blue created SPARK-23203:
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Summary: DataSourceV2 should use immutable trees.
Key: SPARK-23203
URL: https://issues.apache.org/jira/browse/SPARK-23203
Project: Spark
Issue Type: Sub-task
Components: SQL
Affects Versions: 2.3.0
Environment: The DataSourceV2 integration doesn't use [immutable
trees|https://databricks.com/blog/2015/04/13/deep-dive-into-spark-sqls-catalyst-optimizer.html],
which is a basic requirement of Catalyst. The v2 relation should not wrap a
mutable reader and change the logical plan by pushing projections and filters.
Reporter: Ryan Blue
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