apache/hadoop · error · IOException

Block ${oldReplicaInfo} reopen failed. Unable to move block

Error message

Block ${oldReplicaInfo} reopen failed.  Unable to move block file ${oldReplica.getBlockFile()} to rbw dir ${newBlkFile}

What it means

Error "Block ${oldReplicaInfo} reopen failed. Unable to move block file ${oldReplica.getBlockFile()} to rbw dir ${newBlkFile}" thrown in apache/hadoop.

Source

Thrown at hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/LocalReplicaInPipeline.java:445

    try {
      fileIoProvider.rename(getVolume(), oldmeta, newmeta);
    } catch (IOException e) {
      throw new IOException("Block " + oldReplicaInfo + " reopen failed. " +
                            " Unable to move meta file  " + oldmeta +
                            " to rbw dir " + newmeta, e);
    }

    try {
      fileIoProvider.rename(getVolume(), oldBlockFile, newBlkFile);
    } catch (IOException e) {
      try {
        fileIoProvider.rename(getVolume(), newmeta, oldmeta);
      } catch (IOException ex) {
        LOG.warn("Cannot move meta file " + newmeta +
            "back to the finalized directory " + oldmeta, ex);
      }
      throw new IOException("Block " + oldReplicaInfo + " reopen failed. " +
          " Unable to move block file " + oldReplica.getBlockFile() +
          " to rbw dir " + newBlkFile, e);
    }
  }

  @Override // ReplicaInPipeline
  public ReplicaInfo getReplicaInfo() {
    return this;
  }
}

View on GitHub (pinned to 2add963021)

Solutions

1. Check volume permissions, free space, and disk errors; the block data file move to the rbw directory failed.
2. Resolve the I/O problem, then retry the append; the client will re-establish the pipeline.

When it happens

Trigger: Reopening a block for append fails because the block data file cannot be moved into the RBW directory.

Common situations: Reopening a block failed because the block file could not be moved into the RBW directory. Check disk space and volume health.

AI-assisted analysis of apache/hadoop@2add963021 (2026-08-22). Data as JSON: /api/errors/584d0f8c2f5054d3. Report an issue: GitHub.