apache/hadoop · error · IOException

Unexpected Content-Length

Error message

Unexpected Content-Length

What it means

Error "Unexpected Content-Length" thrown in apache/hadoop.

Source

Thrown at hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/services/AbfsInputStream.java:747

          }
        }

        // Case-2: 416 INVALID RANGE
        if (!isHnsEnabled && INVALID_RANGE.equals(ere.getErrorCode())) {
          // Need to rule out if the path is an explicit directory
          checkIfDirPathInFNS();
        }
      }
      // Default: propagate original error
      throw new IOException(ex);
    }

    long bytesRead = op.getResult().getBytesReceived();
    if (streamStatistics != null) {
      streamStatistics.remoteBytesRead(bytesRead);
    }
    if (bytesRead > Integer.MAX_VALUE) {
      throw new IOException("Unexpected Content-Length");
    }
    LOG.debug("HTTP request read bytes = {}", bytesRead);
    bytesFromRemoteRead += bytesRead;
    return (int) bytesRead;
  }

  /**
   * Increment Read Operations.
   */
  private void incrementReadOps() {
    if (statistics != null) {
      statistics.incrementReadOps(1);
    }
  }

  /**
   * Seek to given position in stream.
   * @param n position to seek to

View on GitHub (pinned to 2add963021)

Solutions

1. Retry the read; this indicates the service or an intermediary returned a body length inconsistent with the Content-Length header.
2. Capture the failing request/response with DEBUG logging and report if persistent.

When it happens

Trigger: An ABFS read response has a body size inconsistent with its Content-Length header.

Common situations: See trigger scenarios.

AI-assisted analysis of apache/hadoop@2add963021 (2026-08-22). Data as JSON: /api/errors/e3f5dfd6d412aaaf. Report an issue: GitHub.