viirya commented on a change in pull request #34631:
URL: https://github.com/apache/spark/pull/34631#discussion_r751946892



##########
File path: 
sql/catalyst/src/main/java/org/apache/spark/sql/vectorized/ArrowColumnVector.java
##########
@@ -19,19 +19,14 @@
 
 import org.apache.arrow.vector.*;
 import org.apache.arrow.vector.complex.*;
-import org.apache.arrow.vector.holders.NullableIntervalDayHolder;
 import org.apache.arrow.vector.holders.NullableVarCharHolder;
 
 import org.apache.spark.sql.util.ArrowUtils;
 import org.apache.spark.sql.types.*;
 import org.apache.spark.unsafe.types.UTF8String;
 
-import static 
org.apache.spark.sql.catalyst.util.DateTimeConstants.MICROS_PER_DAY;
-import static 
org.apache.spark.sql.catalyst.util.DateTimeConstants.MICROS_PER_MILLIS;
-
 /**
- * A column vector backed by Apache Arrow. Currently calendar interval type 
and map type are not
- * supported.

Review comment:
       Don't want to keep `map type ....`?




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