EnricoMi commented on code in PR #38312:
URL: https://github.com/apache/spark/pull/38312#discussion_r1001088325
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sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/parquet/ParquetSchemaConverter.scala:
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@@ -271,6 +271,8 @@ class ParquetToSparkSchemaConverter(
} else {
TimestampNTZType
}
+ case timestamp: TimestampLogicalTypeAnnotation if timestamp.getUnit
== TimeUnit.NANOS =>
Review Comment:
Yes, the (earlier) existing behaviour was useful and should be restored
until properly supported as typed nano timestamp. Unless a workaround can be
found that restores the earlier behaviour.
Does providing a schema (`spark.read.schema(...)`) with long type override
the parquet timestamp type from the parquet file? Would that be a workaround?
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