apache/hadoop · error · IllegalArgumentException

integer range badly formed: {}

Error message

integer range badly formed: {}

What it means

Error "integer range badly formed: {}" thrown in apache/hadoop.

Source

Thrown at hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/conf/Configuration.java:2185

      @Override
      public void remove() {
        throw new UnsupportedOperationException();
      }
    };

    List<Range> ranges = new ArrayList<Range>();
    
    public IntegerRanges() {
    }
    
    public IntegerRanges(String newValue) {
      StringTokenizer itr = new StringTokenizer(newValue, ",");
      while (itr.hasMoreTokens()) {
        String rng = itr.nextToken().trim();
        String[] parts = rng.split("-", 3);
        if (parts.length < 1 || parts.length > 2) {
          throw new IllegalArgumentException("integer range badly formed: " + 
                                             rng);
        }
        Range r = new Range();
        r.start = convertToInt(parts[0], 0);
        if (parts.length == 2) {
          r.end = convertToInt(parts[1], Integer.MAX_VALUE);
        } else {
          r.end = r.start;
        }
        if (r.start > r.end) {
          throw new IllegalArgumentException("IntegerRange from " + r.start + 
                                             " to " + r.end + " is invalid");
        }
        ranges.add(r);
      }
    }

    /**

View on GitHub (pinned to 2add963021)

Solutions

1. Format the integer range as comma-separated numbers or a-b ranges, e.g. '1,3,5-8'.

Example fix

Set the property to '1024,2048-4096'.

When it happens

Trigger: Raised at runtime when the documented precondition or configuration requirement for this operation is violated.

Common situations: Misconfigured or missing property, invalid user input, or calling the API before its prerequisites are met.

AI-assisted analysis of apache/hadoop@2add963021 (2026-08-22). Data as JSON: /api/errors/4f810a0c4ba14a1f. Report an issue: GitHub.