[GitHub] [arrow] zhztheplayer commented on a change in pull request #10201: ARROW-11776: [Java][Dataset] Support writing to files within dataset scanner via JNI

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zhztheplayer commented on a change in pull request #10201:
URL: https://github.com/apache/arrow/pull/10201#discussion_r694442690



##########
File path: cpp/src/jni/dataset/jni_util.cc
##########
@@ -16,36 +16,44 @@
 // under the License.
 
 #include "jni/dataset/jni_util.h"
-
+#include "arrow/ipc/metadata_internal.h"
+#include "arrow/util/base64.h"
+#include "arrow/util/key_value_metadata.h"
 #include "arrow/util/logging.h"
 
+#include <memory>
 #include <mutex>
 
+#include <flatbuffers/flatbuffers.h>
+
 namespace arrow {
+
+namespace flatbuf = org::apache::arrow::flatbuf;
+
 namespace dataset {
 namespace jni {
 
 class ReservationListenableMemoryPool::Impl {
  public:
-  explicit Impl(arrow::MemoryPool* pool, std::shared_ptr<ReservationListener> listener,
+  explicit Impl(MemoryPool* pool, std::shared_ptr<ReservationListener> listener,
                 int64_t block_size)
       : pool_(pool),
         listener_(listener),
         block_size_(block_size),
         blocks_reserved_(0),
         bytes_reserved_(0) {}
 
-  arrow::Status Allocate(int64_t size, uint8_t** out) {

Review comment:
       Hello @kiszk , this part of code (Cross JNI data sharing) was moved to https://github.com/apache/arrow/pull/10883 as a dependency of this PR, would you like to have a look? Thank a lot. I have added a separated style fix commit in that one. 




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