apache/hadoop · error · IOException

Flush failed. Block {} with position {} has status {}for pat

Error message

Flush failed. Block {} with position {} has status {}for path {}

What it means

Error "Flush failed. Block {} with position {} has status {}for path {}" thrown in apache/hadoop.

Source

Thrown at hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/services/AzureBlobBlockManager.java:182

  /**
   * Prepares the list of blocks to commit.
   *
   * @return whether we have some data to commit or not.
   * @throws IOException if an I/O error occurs
   */
  protected synchronized boolean hasBlocksToCommit() throws IOException {
    // Adds all the committed blocks if available to the list of blocks to be added in putBlockList.
    if (blockEntryList.isEmpty()) {
      return false; // No entries to commit
    }

    while (!blockEntryList.isEmpty()) {
      BlockEntry current = blockEntryList.poll();
      if (current.getStatus() != AbfsBlockStatus.SUCCESS) {
        LOG.debug(
            "Block {} with position {} has status {}, flush cannot proceed.",
            current.getBlockId(), current.getPosition(), current.getStatus());
        throw new IOException("Flush failed. Block " + current.getBlockId()
            + " with position " + current.getPosition() + " has status "
            + current.getStatus() + "for path " + getAbfsOutputStream().getPath());
      }
      if (!blockEntryList.isEmpty()) {
        BlockEntry next = blockEntryList.getFirst();
        if (current.getPosition() >= next.getPosition()) {
          String errorMessage =
              "Position check failed. Current block position is greater than or equal to the next block's position.\n"
                  + "Current Block Entry:\n"
                  + "Block ID: " + current.getBlockId()
                  + ", Position: " + current.getPosition()
                  + ", Status: " + current.getStatus()
                  + ", Path: " + getAbfsOutputStream().getPath()
                  + ", StreamID: " + getAbfsOutputStream().getStreamID()
                  + ", Next block position: " + next.getPosition()
                  + "\n";
          throw new IOException(errorMessage);
        }

View on GitHub (pinned to 2add963021)

Solutions

1. Retry the flush/commit of the file.
2. Check for competing writers or network errors that left a block in a failed state.

When it happens

Trigger: Flush fails because a pending block is not in the expected status for the path.

Common situations: See trigger scenarios.

AI-assisted analysis of apache/hadoop@2add963021 (2026-08-22). Data as JSON: /api/errors/b5546f0f4fcec223. Report an issue: GitHub.