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RocksDB fat jar that contains .so files for linux32 and linux64 (glibc and musl-libc), jnilib files for Mac OSX, and a .dll for Windows x64.

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//  Copyright (c) 2017-present, Facebook, Inc.  All rights reserved.
//  This source code is licensed under both the GPLv2 (found in the
//  COPYING file in the root directory) and Apache 2.0 License
//  (found in the LICENSE.Apache file in the root directory).

package org.rocksdb;

/**
 * CassandraValueMergeOperator is a merge operator that merges two cassandra wide column
 * values.
 */
public class CassandraValueMergeOperator extends MergeOperator {
  public CassandraValueMergeOperator(int gcGracePeriodInSeconds) {
    super(newSharedCassandraValueMergeOperator(gcGracePeriodInSeconds, 0));
    }

    public CassandraValueMergeOperator(int gcGracePeriodInSeconds, int operandsLimit) {
      super(newSharedCassandraValueMergeOperator(gcGracePeriodInSeconds, operandsLimit));
    }

    private native static long newSharedCassandraValueMergeOperator(
        int gcGracePeriodInSeconds, int limit);

    @Override protected final native void disposeInternal(final long handle);
}