zinking opened a new issue, #168:
URL: https://github.com/apache/arrow-java/issues/168
### Describe the usage question you have. Please include as many useful
details as possible.
@zhztheplayer
```
/**
* Constructor.
*
* @param allocator a context allocator associated with this factory. Any
buffer that will be created natively will
* be then bound to this allocator.
* @param memoryPool the native memory pool associated with this factory.
Any buffer created natively should request
* for memory spaces from this memory pool. This is a
mapped instance of c++ arrow::MemoryPool.
* @param datasetFactoryId an ID, at the same time the native pointer of
the underlying native instance of this
* factory. Make sure in c++ side the pointer is
pointing to the shared pointer wrapping
* the actual instance so we could successfully
decrease the reference count once
* {@link #close} is called.
* @see #close()
*/
public NativeDatasetFactory(BufferAllocator allocator, NativeMemoryPool
memoryPool, long datasetFactoryId) {
this.allocator = allocator;
this.memoryPool = memoryPool;
this.datasetFactoryId = datasetFactoryId;
}
```
what's the relationship between allocator and memoryPool, does allocator
allocate buffers from the memory pool or there is no such restrictions?
thanks
### Component(s)
Java
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