public static void returnDecompressor(Decompressor decompressor) {
    if (decompressor == null) {
      return;
    }
    decompressor.reset();
    payback(DECOMPRESSOR_POOL, decompressor);
  }
Return the {@link Decompressor} to the pool.

@param decompressor
         the <code>Decompressor</code> to be returned to the pool
ql/src/java/org/apache/hadoop/hive/ql/io/CodecPool.java