GH-33655: [C++][Parquet] Write parquet columns in parallel

cpp/src/parquet/arrow/arrow_reader_writer_test.cc

@@ -4973,7 +4973,7 @@ TYPED_TEST(TestBufferedParquetIO, SingleColumnOptionalBufferedWriteLarge) {
   ASSERT_NO_FATAL_FAILURE(this->ReadAndCheckSingleColumnTable(values, num_row_groups));
 }
 
-TEST(TestReadWriteArrow, WriteAndReadRecordBatch) {
+TEST(TestArrowReadWrite, WriteAndReadRecordBatch) {
   auto pool = ::arrow::default_memory_pool();
   auto sink = CreateOutputStream();
   // Limit the max number of rows in a row group to 10
@@ -5041,5 +5041,36 @@ TEST(TestReadWriteArrow, WriteAndReadRecordBatch) {
   EXPECT_TRUE(record_batch->Equals(*read_record_batch));
 }
 
+TEST(TestArrowReadWrite, MultithreadedWrite) {
+  const int num_columns = 20;
+  const int num_rows = 1000;
+  std::shared_ptr<Table> table;
+  ASSERT_NO_FATAL_FAILURE(MakeDoubleTable(num_columns, num_rows, 1, &table));
+
+  // Write columns in parallel in the buffered row group mode.
+  auto sink = CreateOutputStream();
+  auto write_props = WriterProperties::Builder()
+                         .write_batch_size(100)
+                         ->max_row_group_length(table->num_rows())
+                         ->build();
+  auto pool = ::arrow::default_memory_pool();
+  auto arrow_properties = ArrowWriterProperties::Builder().set_use_threads(true)->build();
+  PARQUET_ASSIGN_OR_THROW(
+      auto writer, FileWriter::Open(*table->schema(), pool, sink, std::move(write_props),
+                                    std::move(arrow_properties)));
+  PARQUET_ASSIGN_OR_THROW(auto batch, table->CombineChunksToBatch(pool));
+  ASSERT_OK_NO_THROW(writer->NewBufferedRowGroup());
+  ASSERT_OK_NO_THROW(writer->WriteRecordBatch(*batch));
+  ASSERT_OK_NO_THROW(writer->Close());
+  ASSERT_OK_AND_ASSIGN(auto buffer, sink->Finish());
+
+  // Read to verify the data.
+  std::shared_ptr<Table> result;
+  std::unique_ptr<FileReader> reader;
+  ASSERT_OK_NO_THROW(OpenFile(std::make_shared<BufferReader>(buffer), pool, &reader));
+  ASSERT_OK_NO_THROW(reader->ReadTable(&result));
+  ASSERT_NO_FATAL_FAILURE(::arrow::AssertTablesEqual(*table, *result));
+}
+
 }  // namespace arrow
 }  // namespace parquet

cpp/src/parquet/arrow/writer.cc

@@ -35,6 +35,7 @@
 #include "arrow/util/checked_cast.h"
 #include "arrow/util/key_value_metadata.h"
 #include "arrow/util/logging.h"
+#include "arrow/util/parallel.h"
 
 #include "parquet/arrow/path_internal.h"
 #include "parquet/arrow/reader_internal.h"
@@ -288,7 +289,12 @@ class FileWriterImpl : public FileWriter {
         row_group_writer_(nullptr),
         column_write_context_(pool, arrow_properties.get()),
         arrow_properties_(std::move(arrow_properties)),
-        closed_(false) {}
+        closed_(false) {
+    if (arrow_properties_->use_threads()) {
+      parallel_column_write_contexts_.resize(schema_->num_fields(),
+                                             {pool, arrow_properties_.get()});
+    }
+  }
 
   Status Init() {
     return SchemaManifest::Make(writer_->schema(), /*schema_metadata=*/nullptr,
@@ -403,16 +409,31 @@ class FileWriterImpl : public FileWriter {
     }
 
     auto WriteBatch = [&](int64_t offset, int64_t size) {
+      std::vector<std::unique_ptr<ArrowColumnWriterV2>> writers;
       int column_index_start = 0;
+
       for (int i = 0; i < batch.num_columns(); i++) {
-        ChunkedArray chunkedArray(batch.column(i));
+        ChunkedArray chunkedArray{batch.column(i)};
         ARROW_ASSIGN_OR_RAISE(
             std::unique_ptr<ArrowColumnWriterV2> writer,
             ArrowColumnWriterV2::Make(chunkedArray, offset, size, schema_manifest_,
                                       row_group_writer_, column_index_start));
-        RETURN_NOT_OK(writer->Write(&column_write_context_));
         column_index_start += writer->leaf_count();
+        if (arrow_properties_->use_threads()) {
+          writers.emplace_back(std::move(writer));
+        } else {
+          RETURN_NOT_OK(writer->Write(&column_write_context_));
+        }
       }
+
+      if (arrow_properties_->use_threads()) {
+        DCHECK_EQ(parallel_column_write_contexts_.size(), writers.size());
+        RETURN_NOT_OK(::arrow::internal::ParallelFor(
+            static_cast<int>(writers.size()),
+            [&](int i) { return writers[i]->Write(&parallel_column_write_contexts_[i]); },
+            arrow_properties_->executor()));
+      }
+
       return Status::OK();
     };
 
@@ -455,6 +476,11 @@ class FileWriterImpl : public FileWriter {
   ArrowWriteContext column_write_context_;
   std::shared_ptr<ArrowWriterProperties> arrow_properties_;
   bool closed_;
+
+  /// If arrow_properties_.use_threads() is true, the vector size is equal to
+  /// schema_->num_fields() to make it thread-safe. Otherwise, the vector is
+  /// empty and column_write_context_ above is shared by all columns.
+  std::vector<ArrowWriteContext> parallel_column_write_contexts_;
 };
 
 FileWriter::~FileWriter() {}

cpp/src/parquet/arrow/writer.h

@@ -131,6 +131,11 @@ class PARQUET_EXPORT FileWriter {
   ///
   /// Batches get flushed to the output stream once NewBufferedRowGroup()
   /// or Close() is called.
+  ///
+  /// WARNING: If you are writing multiple files in parallel in the same
+  /// executor, deadlock may occur if ArrowWriterProperties::use_threads
+  /// is set to true to write columns in parallel. Please disable use_threads
+  /// option in this case.
   virtual ::arrow::Status WriteRecordBatch(const ::arrow::RecordBatch& batch) = 0;
 
   /// \brief Write the footer and close the file.

cpp/src/parquet/properties.cc

@@ -23,6 +23,7 @@
 #include "arrow/io/buffered.h"
 #include "arrow/io/memory.h"
 #include "arrow/util/logging.h"
+#include "arrow/util/thread_pool.h"
 
 namespace parquet {
 
@@ -51,6 +52,10 @@ std::shared_ptr<ArrowInputStream> ReaderProperties::GetStream(
   }
 }
 
+::arrow::internal::Executor* ArrowWriterProperties::executor() const {
+  return executor_ != nullptr ? executor_ : ::arrow::internal::GetCpuThreadPool();
+}
+
 ArrowReaderProperties default_arrow_reader_properties() {
   static ArrowReaderProperties default_reader_props;
   return default_reader_props;

cpp/src/parquet/properties.h

@@ -26,6 +26,7 @@
 #include "arrow/io/caching.h"
 #include "arrow/type.h"
 #include "arrow/util/compression.h"
+#include "arrow/util/type_fwd.h"
 #include "parquet/encryption/encryption.h"
 #include "parquet/exception.h"
 #include "parquet/parquet_version.h"
@@ -752,7 +753,9 @@ class PARQUET_EXPORT ArrowWriterProperties {
           store_schema_(false),
           // TODO: At some point we should flip this.
           compliant_nested_types_(false),
-          engine_version_(V2) {}
+          engine_version_(V2),
+          use_threads_(kArrowDefaultUseThreads),
+          executor_(NULLPTR) {}
     virtual ~Builder() = default;
 
     /// \brief Disable writing legacy int96 timestamps (default disabled).
@@ -825,12 +828,34 @@ class PARQUET_EXPORT ArrowWriterProperties {
       return this;
     }
 
+    /// \brief Set whether to use multiple threads to write columns
+    /// in parallel in the buffered row group mode.
+    ///
+    /// WARNING: If writing multiple files in parallel in the same
+    /// executor, deadlock may occur if use_threads is true. Please
+    /// disable it in this case.
+    ///
+    /// Default is false.
+    Builder* set_use_threads(bool use_threads) {
+      use_threads_ = use_threads;
+      return this;
+    }
+
+    /// \brief Set the executor to write columns in parallel in the
+    /// buffered row group mode.
+    ///
+    /// Default is nullptr and the default cpu executor will be used.
+    Builder* set_executor(::arrow::internal::Executor* executor) {
+      executor_ = executor;
+      return this;
+    }
+
     /// Create the final properties.
     std::shared_ptr<ArrowWriterProperties> build() {
       return std::shared_ptr<ArrowWriterProperties>(new ArrowWriterProperties(
           write_timestamps_as_int96_, coerce_timestamps_enabled_, coerce_timestamps_unit_,
           truncated_timestamps_allowed_, store_schema_, compliant_nested_types_,
-          engine_version_));
+          engine_version_, use_threads_, executor_));
     }
 
    private:
@@ -843,6 +868,9 @@ class PARQUET_EXPORT ArrowWriterProperties {
     bool store_schema_;
     bool compliant_nested_types_;
     EngineVersion engine_version_;
+
+    bool use_threads_;
+    ::arrow::internal::Executor* executor_;
   };
 
   bool support_deprecated_int96_timestamps() const { return write_timestamps_as_int96_; }
@@ -869,20 +897,30 @@ class PARQUET_EXPORT ArrowWriterProperties {
   /// place in case there are bugs detected in V2.
   EngineVersion engine_version() const { return engine_version_; }
 
+  /// \brief Returns whether the writer will use multiple threads
+  /// to write columns in parallel in the buffered row group mode.
+  bool use_threads() const { return use_threads_; }
+
+  /// \brief Returns the executor used to write columns in parallel.
+  ::arrow::internal::Executor* executor() const;
+
  private:
   explicit ArrowWriterProperties(bool write_nanos_as_int96,
                                  bool coerce_timestamps_enabled,
                                  ::arrow::TimeUnit::type coerce_timestamps_unit,
                                  bool truncated_timestamps_allowed, bool store_schema,
                                  bool compliant_nested_types,
-                                 EngineVersion engine_version)
+                                 EngineVersion engine_version, bool use_threads,
+                                 ::arrow::internal::Executor* executor)
       : write_timestamps_as_int96_(write_nanos_as_int96),
         coerce_timestamps_enabled_(coerce_timestamps_enabled),
         coerce_timestamps_unit_(coerce_timestamps_unit),
         truncated_timestamps_allowed_(truncated_timestamps_allowed),
         store_schema_(store_schema),
         compliant_nested_types_(compliant_nested_types),
-        engine_version_(engine_version) {}
+        engine_version_(engine_version),
+        use_threads_(use_threads),
+        executor_(executor) {}
 
   const bool write_timestamps_as_int96_;
   const bool coerce_timestamps_enabled_;
@@ -891,6 +929,8 @@ class PARQUET_EXPORT ArrowWriterProperties {
   const bool store_schema_;
   const bool compliant_nested_types_;
   const EngineVersion engine_version_;
+  const bool use_threads_;
+  ::arrow::internal::Executor* executor_;
 };
 
 /// \brief State object used for writing Arrow data directly to a Parquet