Shekharrajak opened a new issue, #3521:
URL: https://github.com/apache/datafusion-comet/issues/3521
### Describe the bug
When using the native Parquet writer with INSERT INTO ... SELECT syntax,
subsequent reads return empty results even though the file is written
successfully. This could be due to Spark caching .
Ref https://github.com/apache/datafusion-comet/pull/3479/changes#r2804765579
```
withSQLConf(
CometConf.COMET_NATIVE_PARQUET_WRITE_ENABLED.key -> "true",
CometConf.COMET_EXEC_ENABLED.key -> "true",
CometConf.getOperatorAllowIncompatConfigKey(classOf[DataWritingCommandExec]) ->
"true") {
sql("create table t(i boolean) using parquet")
sql("alter table t add column s bigint default 42")
sql("insert into t select false, default")
spark.table("t").show() // Returns empty!
}
```
expected : false, 42
actual: (0 rows)
Note: This issue does NOT affect INSERT INTO ... VALUES syntax, only INSERT
INTO ... SELECT.
### Steps to reproduce
_No response_
### Expected behavior
_No response_
### Additional context
_No response_
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