apache/hadoop · error · IllegalArgumentException

filters cannot be xor-ed

Error message

filters cannot be xor-ed

What it means

Error "filters cannot be xor-ed" thrown in apache/hadoop.

Source

Thrown at hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/bloom/DynamicBloomFilter.java:222

    }

    DynamicBloomFilter dbf = (DynamicBloomFilter)filter;

    if (dbf.matrix.length != this.matrix.length || dbf.nr != this.nr) {
      throw new IllegalArgumentException("filters cannot be or-ed");
    }
    for (int i = 0; i < matrix.length; i++) {
      matrix[i].or(dbf.matrix[i]);
    }
  }

  @Override
  public void xor(Filter filter) {
    if (filter == null
        || !(filter instanceof DynamicBloomFilter)
        || filter.vectorSize != this.vectorSize
        || filter.nbHash != this.nbHash) {
      throw new IllegalArgumentException("filters cannot be xor-ed");
    }
    DynamicBloomFilter dbf = (DynamicBloomFilter)filter;

    if (dbf.matrix.length != this.matrix.length || dbf.nr != this.nr) {
      throw new IllegalArgumentException("filters cannot be xor-ed");
    }

    for(int i = 0; i<matrix.length; i++) {
        matrix[i].xor(dbf.matrix[i]);
    }
  }

  @Override
  public String toString() {
    StringBuilder res = new StringBuilder();

    for (int i = 0; i < matrix.length; i++) {
      res.append(matrix[i])

View on GitHub (pinned to 2add963021)

Solutions

1. xor() requires another DynamicBloomFilter with matching configuration. Pass a compatible filter of the same type and size.

When it happens

Trigger: Thrown at hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/bloom/DynamicBloomFilter.java:222 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of apache/hadoop@2add963021 (2026-08-22). Data as JSON: /api/errors/c15da3a50cb9c9cc. Report an issue: GitHub.