ulysses you created SPARK-34725:
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Summary: Do not show Statistics(sizeInBytes=8.0 EiB) if we don't
have valid stats
Key: SPARK-34725
URL: https://issues.apache.org/jira/browse/SPARK-34725
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 3.2.0
Reporter: ulysses you
In cast explian mode, we might get such explain string if the table is external
and we have not stats.
{code:java}
== Optimized Logical Plan ==
GlobalLimit 21, Statistics(sizeInBytes=1008.0 B, rowCount=21)
+- LocalLimit 21, Statistics(sizeInBytes=12.0 EiB)
+- Project [cast(c1#52 as string) AS c1#259, pt#53],
Statistics(sizeInBytes=12.0 EiB)
+- Relation default.pt1[c1#52,pt#53] parquet, Statistics(sizeInBytes=8.0 EiB)
{code}
The reason is we use the `Long.MaxValue` as the stats with conf
`spark.sql.defaultSizeInBytes`. It would be better to hide the default stat.
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