private void configureKeyValue(long numKV, int keyLen, int valueLen) {
    numKV = Math.abs(numKV);
    keyLen = Math.abs(keyLen);
    keyPrefixLen = 0;
    while (numKV != 0) {
      numKV >>>= 8;
      ++keyPrefixLen;
    }

    this.keyLen = Math.max(keyPrefixLen, keyLen);
    this.valueLen = valueLen;

    // Arbitrarily split the key into row, column family, and qualifier.
    rowLen = keyPrefixLen / 3;
    cfLen = keyPrefixLen / 4;
  }
Runs the tools.
@param args command-line arguments
@return true in case of success
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/CreateRandomStoreFile.java