Method ensureShim

java/core/src/java/org/apache/orc/impl/ZlibCodec.java:209–214

()

  }

  private void ensureShim() {
    if (decompressShim == null) {
      decompressShim = SHIMS.getDirectDecompressor(
          HadoopShims.DirectCompressionType.ZLIB_NOHEADER);
    }
  }

  @Override
  public void directDecompress(ByteBuffer in, ByteBuffer out) throws IOException {