Support nanosecond timestamps in parquet

cpp/CMakeLists.txt

@@ -301,12 +301,12 @@ add_library(
   src/io/orc/stripe_init.cu
   src/io/orc/timezone.cpp
   src/io/orc/writer_impl.cu
+  src/io/parquet/compact_protocol_reader.cpp
   src/io/parquet/compact_protocol_writer.cpp
   src/io/parquet/page_data.cu
   src/io/parquet/chunk_dict.cu
   src/io/parquet/page_enc.cu
   src/io/parquet/page_hdr.cu
-  src/io/parquet/parquet.cpp
   src/io/parquet/reader_impl.cu
   src/io/parquet/writer_impl.cu
   src/io/statistics/orc_column_statistics.cu

cpp/src/io/parquet/parquet.cpp → cpp/src/io/parquet/compact_protocol_reader.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018-2020, NVIDIA CORPORATION.
+ * Copyright (c) 2018-2022, NVIDIA CORPORATION.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -14,8 +14,11 @@
  * limitations under the License.
  */
 
-#include "parquet.hpp"
+#include "compact_protocol_reader.hpp"
+
 #include <algorithm>
+#include <cstddef>
+#include <tuple>
 
 namespace cudf {
 namespace io {
@@ -198,7 +201,8 @@ bool CompactProtocolReader::read(TimestampType* t)
 bool CompactProtocolReader::read(TimeUnit* u)
 {
   auto op = std::make_tuple(ParquetFieldUnion(1, u->isset.MILLIS, u->MILLIS),
-                            ParquetFieldUnion(2, u->isset.MICROS, u->MICROS));
+                            ParquetFieldUnion(2, u->isset.MICROS, u->MICROS),
+                            ParquetFieldUnion(3, u->isset.NANOS, u->NANOS));
   return function_builder(this, op);
 }