@Override
            public Optional<PrimitiveConverter> visit(TimestampLogicalTypeAnnotation logicalTypeAnnotation) {
              TypeInfo info = hiveTypeInfo == null ? TypeInfoFactory.timestampTypeInfo : hiveTypeInfo;
              return Optional.of(EINT64_CONVERTER.getConverter(type, index, parent, info));
            }
ETypeConverter is an easy way to set the converter for the right type.
ql/src/java/org/apache/hadoop/hive/ql/io/parquet/convert/ETypeConverter.java