apache/hadoop · error · HadoopIllegalArgumentException

Invalid outputs length

Error message

Invalid outputs length

What it means

Error "Invalid outputs length" thrown in apache/hadoop.

Source

Thrown at hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/rawcoder/EncodingState.java:41

/**
 * A utility class that maintains encoding state during an encode call.
 */
@InterfaceAudience.Private
abstract class EncodingState {
  RawErasureEncoder encoder;
  int encodeLength;

  /**
   * Check and validate decoding parameters, throw exception accordingly.
   * @param inputs input buffers to check
   * @param outputs output buffers to check
   */
  <T> void checkParameters(T[] inputs, T[] outputs) {
    if (inputs.length != encoder.getNumDataUnits()) {
      throw new HadoopIllegalArgumentException("Invalid inputs length");
    }
    if (outputs.length != encoder.getNumParityUnits()) {
      throw new HadoopIllegalArgumentException("Invalid outputs length");
    }
  }
}

View on GitHub (pinned to 2add963021)

Solutions

1. Pass exactly numParityUnits output buffers to the encoding state.

When it happens

Trigger: Thrown at hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/rawcoder/EncodingState.java:41 when the library encounters an invalid state.

Common situations: Occurs when the outputs array length does not match numParityUnits for an encode call. Supply exactly numParityUnits output buffers.

AI-assisted analysis of apache/hadoop@2add963021 (2026-08-22). Data as JSON: /api/errors/b0142d9a00110eaf. Report an issue: GitHub.