apache/hadoop · error · HadoopIllegalArgumentException

Invalid buffer found, not allowing null

Error message

Invalid buffer found, not allowing null

What it means

Error "Invalid buffer found, not allowing null" thrown in apache/hadoop.

Source

Thrown at hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/rawcoder/ByteBufferEncodingState.java:94

      buffer = outputs[i];
      outputOffsets[i] = buffer.arrayOffset() + buffer.position();
      newOutputs[i] = buffer.array();
    }

    ByteArrayEncodingState baeState = new ByteArrayEncodingState(encoder,
        encodeLength, newInputs, inputOffsets, newOutputs, outputOffsets);
    return baeState;
  }

  /**
   * Check and ensure the buffers are of the desired length and type, direct
   * buffers or not.
   * @param buffers the buffers to check
   */
  void checkBuffers(ByteBuffer[] buffers) {
    for (ByteBuffer buffer : buffers) {
      if (buffer == null) {
        throw new HadoopIllegalArgumentException(
            "Invalid buffer found, not allowing null");
      }

      if (buffer.remaining() != encodeLength) {
        throw new HadoopIllegalArgumentException(
            "Invalid buffer, not of length " + encodeLength);
      }
      if (buffer.isDirect() != usingDirectBuffer) {
        throw new HadoopIllegalArgumentException(
            "Invalid buffer, isDirect should be " + usingDirectBuffer);
      }
    }
  }
}

View on GitHub (pinned to 2add963021)

Solutions

1. Ensure every entry in the inputs and outputs arrays is a non-null ByteBuffer before encoding.
2. Initialize all output buffers with the correct capacity before calling encode.

When it happens

Trigger: Thrown at hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/rawcoder/ByteBufferEncodingState.java:94 when the library encounters an invalid state.

Common situations: Occurs when a null buffer is passed into an encoding state. Validate all input/output buffers are non-null before performing the encode step.

AI-assisted analysis of apache/hadoop@2add963021 (2026-08-22). Data as JSON: /api/errors/7409159584328b69. Report an issue: GitHub.