public RocksDbTableDescriptor<K, V> withNumWriteBuffers(int numWriteBuffers) {
    this.numWriteBuffers = numWriteBuffers;
    return this;
  }
Configures the
<a href="https://github.com/facebook/rocksdb/wiki/Basic-Operations#write-buffer">
number of write buffers</a> that a RocksDB store uses. This allows RocksDB
to continue taking writes to other buffers even while a given write buffer is being
flushed to disk.
<p>
Default value is 3.
<p>
Refer to <code>stores.store-name.rocksdb.num.write.buffers</code> in Samza configuration guide

@param numWriteBuffers the number of write buffers
@return this table descriptor instance
samza-kv-rocksdb/src/main/java/org/apache/samza/storage/kv/descriptors/RocksDbTableDescriptor.java