RocksDB is used for several (internal) reasons (as you mentioned already for example its performance). Conceptually, Kafka Streams does not need RocksDB — it is used as internal key-value cache and any other store offering similar functionality would work, too. Comment from @miguno below (rephrased): One important advantage of RocksDB in contrast to pure in-memory … Read more
I hope that will help you a little (check out the JNI Struct reference, too): // Get the class jclass mvclass = env->GetObjectClass( *cls ); // Get method ID for method getSomeDoubleArray that returns a double array jmethodID mid = env->GetMethodID( mvclass, “getSomeDoubleArray”, “()[D”); // Call the method, returns JObject (because Array is instance of … Read more
You just need to cast jintto int using C style casts. Same for jboolean to bool (if you’re using C99 bool type) or to uint8_t (if you’re using std int types) or to unsigned char. Open $NDK_ROOT/platforms/android-8/arch-arm/usr/include/jni.h and you’ll see jint, jboolean etc are just typedefs.