kou commented on code in PR #48285:
URL: https://github.com/apache/arrow/pull/48285#discussion_r2597616453


##########
cpp/src/parquet/arrow/arrow_reader_writer_test.cc:
##########
@@ -4259,13 +4260,15 @@ TEST(TestArrowReaderAdHoc, 
LARGE_MEMORY_TEST(LargeStringColumn)) {
 
   auto reader = 
ParquetFileReader::Open(std::make_shared<BufferReader>(tables_buffer));
   std::unique_ptr<FileReader> arrow_reader;
-  ASSERT_OK(FileReader::Make(default_memory_pool(), std::move(reader), 
&arrow_reader));
+  ASSERT_OK_AND_ASSIGN(arrow_reader,

Review Comment:
   ```suggestion
     ASSERT_OK_AND_ASSIGN(auto arrow_reader,
   ```



##########
cpp/src/parquet/arrow/arrow_reader_writer_test.cc:
##########
@@ -4494,8 +4497,8 @@ TEST(TestArrowReaderAdHoc, ReadFloat16Files) {
     ARROW_SCOPED_TRACE("path = ", path);
 
     std::unique_ptr<FileReader> reader;
-    ASSERT_OK_NO_THROW(
-        FileReader::Make(pool, ParquetFileReader::OpenFile(path, false), 
&reader));
+    ASSERT_OK_AND_ASSIGN(
+        reader, FileReader::Make(pool, ParquetFileReader::OpenFile(path, 
false)));

Review Comment:
   ```suggestion
       ASSERT_OK_AND_ASSIGN(
           auto reader, FileReader::Make(pool, 
ParquetFileReader::OpenFile(path, false)));
   ```



##########
cpp/src/parquet/arrow/arrow_reader_writer_test.cc:
##########
@@ -4617,8 +4620,8 @@ TEST(TestArrowColumnReader, NextBatchEmptyInput) {
 
   auto reader = 
ParquetFileReader::Open(std::make_shared<BufferReader>(buffer));
   std::unique_ptr<FileReader> file_reader;
-  ASSERT_OK(
-      FileReader::Make(::arrow::default_memory_pool(), std::move(reader), 
&file_reader));
+  ASSERT_OK_AND_ASSIGN(
+      file_reader, FileReader::Make(::arrow::default_memory_pool(), 
std::move(reader)));

Review Comment:
   ```suggestion
     ASSERT_OK_AND_ASSIGN(
         auto file_reader, FileReader::Make(::arrow::default_memory_pool(), 
std::move(reader)));
   ```



##########
cpp/src/parquet/arrow/arrow_reader_writer_test.cc:
##########
@@ -5729,7 +5733,8 @@ TEST(TestArrowReadWrite, WriteAndReadRecordBatch) {
   read_properties.set_batch_size(record_batch->num_rows());
   auto reader = 
ParquetFileReader::Open(std::make_shared<BufferReader>(buffer));
   std::unique_ptr<FileReader> arrow_reader;
-  ASSERT_OK(FileReader::Make(pool, std::move(reader), read_properties, 
&arrow_reader));
+  ASSERT_OK_AND_ASSIGN(arrow_reader,

Review Comment:
   ```suggestion
     ASSERT_OK_AND_ASSIGN(auto arrow_reader,
   ```



##########
cpp/src/parquet/arrow/arrow_reader_writer_test.cc:
##########
@@ -4567,8 +4570,8 @@ TEST(TestArrowFileReader, RecordBatchReaderEmptyInput) {
 
   auto reader = 
ParquetFileReader::Open(std::make_shared<BufferReader>(buffer));
   std::unique_ptr<FileReader> file_reader;
-  ASSERT_OK(
-      FileReader::Make(::arrow::default_memory_pool(), std::move(reader), 
&file_reader));
+  ASSERT_OK_AND_ASSIGN(
+      file_reader, FileReader::Make(::arrow::default_memory_pool(), 
std::move(reader)));

Review Comment:
   ```suggestion
     ASSERT_OK_AND_ASSIGN(
         auto file_reader, FileReader::Make(::arrow::default_memory_pool(), 
std::move(reader)));
   ```



##########
cpp/src/parquet/arrow/arrow_reader_writer_test.cc:
##########
@@ -4539,8 +4542,8 @@ TEST(TestArrowFileReader, 
RecordBatchReaderEmptyRowGroups) {
 
   auto reader = 
ParquetFileReader::Open(std::make_shared<BufferReader>(buffer));
   std::unique_ptr<FileReader> file_reader;
-  ASSERT_OK(
-      FileReader::Make(::arrow::default_memory_pool(), std::move(reader), 
&file_reader));
+  ASSERT_OK_AND_ASSIGN(
+      file_reader, FileReader::Make(::arrow::default_memory_pool(), 
std::move(reader)));

Review Comment:
   ```suggestion
     ASSERT_OK_AND_ASSIGN(
         auto file_reader, FileReader::Make(::arrow::default_memory_pool(), 
std::move(reader)));
   ```



##########
cpp/src/parquet/arrow/arrow_reader_writer_test.cc:
##########
@@ -4362,8 +4365,8 @@ TEST(TestArrowReaderAdHoc, LegacyTwoLevelList) {
 
     // Verify Arrow schema and data
     std::unique_ptr<FileReader> reader;
-    ASSERT_OK_NO_THROW(
-        FileReader::Make(default_memory_pool(), std::move(file_reader), 
&reader));
+    ASSERT_OK_AND_ASSIGN(reader,
+                         FileReader::Make(default_memory_pool(), 
std::move(file_reader)));

Review Comment:
   ```suggestion
       ASSERT_OK_AND_ASSIGN(auto reader,
                            FileReader::Make(default_memory_pool(), 
std::move(file_reader)));
   ```



##########
cpp/src/parquet/arrow/arrow_reader_writer_test.cc:
##########
@@ -4591,8 +4594,8 @@ TEST(TestArrowColumnReader, NextBatchZeroBatchSize) {
 
   auto reader = 
ParquetFileReader::Open(std::make_shared<BufferReader>(buffer));
   std::unique_ptr<FileReader> file_reader;
-  ASSERT_OK(
-      FileReader::Make(::arrow::default_memory_pool(), std::move(reader), 
&file_reader));
+  ASSERT_OK_AND_ASSIGN(
+      file_reader, FileReader::Make(::arrow::default_memory_pool(), 
std::move(reader)));

Review Comment:
   ```suggestion
     ASSERT_OK_AND_ASSIGN(
         auto file_reader, FileReader::Make(::arrow::default_memory_pool(), 
std::move(reader)));
   ```



##########
cpp/src/parquet/arrow/arrow_reader_writer_test.cc:
##########
@@ -4427,8 +4430,8 @@ TEST_P(TestArrowReaderAdHocSparkAndHvr, ReadDecimals) {
   auto pool = ::arrow::default_memory_pool();
 
   std::unique_ptr<FileReader> arrow_reader;
-  ASSERT_OK_NO_THROW(
-      FileReader::Make(pool, ParquetFileReader::OpenFile(path, false), 
&arrow_reader));
+  ASSERT_OK_AND_ASSIGN(arrow_reader,

Review Comment:
   ```suggestion
     ASSERT_OK_AND_ASSIGN(auto arrow_reader,
   ```



##########
cpp/src/parquet/arrow/arrow_reader_writer_test.cc:
##########
@@ -5201,8 +5204,9 @@ TEST_F(TestArrowReadDeltaEncoding, 
IncrementalDecodeDeltaByteArray) {
   ArrowReaderProperties properties = default_arrow_reader_properties();
   properties.set_batch_size(batch_size);
   std::unique_ptr<FileReader> parquet_reader;
-  ASSERT_OK(FileReader::Make(pool, ParquetFileReader::OpenFile(file, false), 
properties,
-                             &parquet_reader));
+  ASSERT_OK_AND_ASSIGN(
+      parquet_reader,

Review Comment:
   ```suggestion
     ASSERT_OK_AND_ASSIGN(
         auto parquet_reader,
   ```



##########
cpp/src/parquet/arrow/arrow_reader_writer_test.cc:
##########
@@ -5141,8 +5144,8 @@ class TestArrowReadDeltaEncoding : public ::testing::Test 
{
     auto file = test::get_data_file(file_name);
     auto pool = ::arrow::default_memory_pool();
     std::unique_ptr<FileReader> parquet_reader;
-    ASSERT_OK(FileReader::Make(pool, ParquetFileReader::OpenFile(file, false),
-                               &parquet_reader));
+    ASSERT_OK_AND_ASSIGN(
+        parquet_reader, FileReader::Make(pool, 
ParquetFileReader::OpenFile(file, false)));

Review Comment:
   ```suggestion
       ASSERT_OK_AND_ASSIGN(
           auto parquet_reader, FileReader::Make(pool, 
ParquetFileReader::OpenFile(file, false)));
   ```



##########
cpp/src/parquet/arrow/reader_writer_benchmark.cc:
##########
@@ -296,9 +296,10 @@ static void BenchmarkReadTable(::benchmark::State& state, 
const Table& table,
   for (auto _ : state) {
     auto reader =
         
ParquetFileReader::Open(std::make_shared<::arrow::io::BufferReader>(buffer));
-    std::unique_ptr<FileReader> arrow_reader;
-    EXIT_NOT_OK(FileReader::Make(::arrow::default_memory_pool(), 
std::move(reader),
-                                 &arrow_reader));
+    auto arrow_reader_result =
+        FileReader::Make(::arrow::default_memory_pool(), std::move(reader));
+    EXIT_NOT_OK(arrow_reader_result.status());
+    std::shared_ptr<FileReader> arrow_reader = std::move(*arrow_reader_result);

Review Comment:
   ```suggestion
       auto arrow_reader = std::move(*arrow_reader_result);
   ```



##########
cpp/src/parquet/arrow/reader_writer_benchmark.cc:
##########
@@ -735,9 +736,10 @@ static void BM_ReadIndividualRowGroups(::benchmark::State& 
state) {
   while (state.KeepRunning()) {
     auto reader =
         
ParquetFileReader::Open(std::make_shared<::arrow::io::BufferReader>(buffer));
-    std::unique_ptr<FileReader> arrow_reader;
-    EXIT_NOT_OK(FileReader::Make(::arrow::default_memory_pool(), 
std::move(reader),
-                                 &arrow_reader));
+    auto arrow_reader_result =
+        FileReader::Make(::arrow::default_memory_pool(), std::move(reader));
+    EXIT_NOT_OK(arrow_reader_result.status());
+    std::shared_ptr<FileReader> arrow_reader = std::move(*arrow_reader_result);

Review Comment:
   ```suggestion
       auto arrow_reader = std::move(*arrow_reader_result);
   ```



##########
cpp/src/parquet/arrow/reader_writer_benchmark.cc:
##########
@@ -770,9 +772,11 @@ static void BM_ReadMultipleRowGroups(::benchmark::State& 
state) {
   while (state.KeepRunning()) {
     auto reader =
         
ParquetFileReader::Open(std::make_shared<::arrow::io::BufferReader>(buffer));
-    std::unique_ptr<FileReader> arrow_reader;
-    EXIT_NOT_OK(FileReader::Make(::arrow::default_memory_pool(), 
std::move(reader),
-                                 &arrow_reader));
+    auto arrow_reader_result =
+        FileReader::Make(::arrow::default_memory_pool(), std::move(reader));
+    EXIT_NOT_OK(arrow_reader_result.status());
+    std::shared_ptr<FileReader> arrow_reader = std::move(*arrow_reader_result);

Review Comment:
   ```suggestion
       auto arrow_reader = std::move(*arrow_reader_result);
   ```



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