cloud-fan commented on code in PR #56622:
URL: https://github.com/apache/spark/pull/56622#discussion_r3449784126


##########
sql/core/src/main/java/org/apache/spark/sql/execution/datasources/parquet/ParquetVectorUpdaterFactory.java:
##########
@@ -165,8 +165,17 @@ public ParquetVectorUpdater getUpdater(ColumnDescriptor 
descriptor, DataType spa
           return new LongUpdater();
         } else if (canReadAsDecimal(descriptor, sparkType)) {
           return new LongToDecimalUpdater(descriptor, (DecimalType) sparkType);
-        } else if (sparkType instanceof TimeType) {
-          return new LongAsNanosUpdater();
+        } else if (sparkType instanceof TimeType &&
+          isTimeTypeMatched(LogicalTypeAnnotation.TimeUnit.NANOS)) {

Review Comment:
   oh I see, off-by-default feature does not count, so we still have the chance 
to fix it without considering backward compatibility.



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