Wenchen Fan created SPARK-22716:
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Summary: revisit ctx.addReferenceObj
Key: SPARK-22716
URL: https://issues.apache.org/jira/browse/SPARK-22716
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 2.3.0
Reporter: Wenchen Fan
`ctx.addReferenceObj` creats a global variable just for referring an object,
which seems an overkill. We should revisit it and always use
`ctx.addReferenceMinorObj`
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