fb64 commented on code in PR #40101:
URL: https://github.com/apache/arrow/pull/40101#discussion_r1493045960
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java/dataset/src/main/cpp/jni_wrapper.cc:
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@@ -126,20 +160,16 @@ class ReserveFromJava : public
arrow::dataset::jni::ReservationListener {
: vm_(vm), java_reservation_listener_(java_reservation_listener) {}
arrow::Status OnReservation(int64_t size) override {
- JNIEnv* env;
- if (vm_->GetEnv(reinterpret_cast<void**>(&env), JNI_VERSION) != JNI_OK) {
- return arrow::Status::Invalid("JNIEnv was not attached to current
thread");
- }
+ JNIEnvGuard guard(vm_);
+ JNIEnv* env = guard.env();
Review Comment:
try/catch added to maintain the initial behavior
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