apache/hadoop · error · UnsupportedOperationException

Replica of type ${getState()} does not support createInfo

Error message

Replica of type ${getState()} does not support createInfo

What it means

Error "Replica of type ${getState()} does not support createInfo" thrown in apache/hadoop.

Source

Thrown at hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/LocalReplicaInPipeline.java:409

    throw new UnsupportedOperationException("Replica of type " + getState() +
        " does not support getOriginalReplica");
  }

  @Override
  public long getRecoveryID() {
    throw new UnsupportedOperationException("Replica of type " + getState() +
        " does not support getRecoveryID");
  }

  @Override
  public void setRecoveryID(long recoveryId) {
    throw new UnsupportedOperationException("Replica of type " + getState() +
        " does not support setRecoveryID");
  }

  @Override
  public ReplicaRecoveryInfo createInfo(){
    throw new UnsupportedOperationException("Replica of type " + getState() +
        " does not support createInfo");
  }

  public void moveReplicaFrom(ReplicaInfo oldReplicaInfo, File newBlkFile)
      throws IOException {

    if (!(oldReplicaInfo instanceof LocalReplica)) {
      throw new IOException("The source replica with blk id "
          + oldReplicaInfo.getBlockId()
          + " should be derived from LocalReplica");
    }

    final LocalReplica oldReplica = (LocalReplica) oldReplicaInfo;
    final File oldBlockFile = oldReplica.getBlockFile();
    final File oldmeta = oldReplica.getMetaFile();
    final File newmeta = getMetaFile();
    final FileIoProvider fileIoProvider = getFileIoProvider();

View on GitHub (pinned to 2add963021)

Solutions

1. Do not call createInfo on this replica type; it is only meaningful for specific replica implementations.
2. Check the replica state before invoking createInfo.

When it happens

Trigger: createInfo is invoked on a replica whose state/type does not implement it.

Common situations: createInfo was called on a replica type that cannot produce block info. Internal misuse limited to specific replica states.

AI-assisted analysis of apache/hadoop@2add963021 (2026-08-22). Data as JSON: /api/errors/b471a557585d1c9f. Report an issue: GitHub.