apache/hadoop · error · HadoopIllegalArgumentException

Invalid buffer, isDirect should be {}

Error message

Invalid buffer, isDirect should be {}

What it means

Error "Invalid buffer, isDirect should be {}" thrown in apache/hadoop.

Source

Thrown at hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/rawcoder/ByteBufferEncodingState.java:103

  /**
   * 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. Use direct ByteBuffers when the encoder's preferDirectBuffer() is true, heap buffers otherwise; make all buffers consistent.

When it happens

Trigger: Thrown at hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/rawcoder/ByteBufferEncodingState.java:103 when the library encounters an invalid state.

Common situations: Occurs when an encoding buffer's directness does not match the coder's expectation. Allocate direct or heap ByteBuffers consistent with the coder configuration.

AI-assisted analysis of apache/hadoop@2add963021 (2026-08-22). Data as JSON: /api/errors/5b0bc1506a069edf. Report an issue: GitHub.