arina-ielchiieva commented on a change in pull request #1829: DRILL-7096:
Develop vector for canonical Map<K,V>
URL: https://github.com/apache/drill/pull/1829#discussion_r317075663
##########
File path:
exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/metadata/Metadata_V4.java
##########
@@ -400,11 +405,23 @@ public Object deserializeKey(String key,
com.fasterxml.jackson.databind.Deserial
* Note: Since the structure of column metadata hasn't changes from v3,
ColumnMetadata_v4 extends ColumnMetadata_v3
*/
public static class ColumnMetadata_v4 extends Metadata_V3.ColumnMetadata_v3 {
+
+ List<OriginalType> originalTypes;
+
public ColumnMetadata_v4() {
}
public ColumnMetadata_v4(String[] name, PrimitiveType.PrimitiveTypeName
primitiveType, Object minValue, Object maxValue, Long nulls) {
+ this(name, primitiveType, minValue, maxValue, nulls, new ArrayList<>());
Review comment:
Collections.emptyList()?
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