apache/hadoop · error · InvalidRequestException

Invalid negative ID.

Error message

Invalid negative ID.

What it means

Error "Invalid negative ID." thrown in apache/hadoop.

Source

Thrown at hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/CacheManager.java:519

        if (child.isFile()) {
          requestedBytes += child.asFile().computeFileSize();
        }
      }
    }
    return new CacheDirectiveStats.Builder()
        .setBytesNeeded(requestedBytes * replication)
        .setFilesCached(requestedFiles)
        .build();
  }

  /**
   * Get a CacheDirective by ID, validating the ID and that the directive
   * exists.
   */
  private CacheDirective getById(long id) throws InvalidRequestException {
    // Check for invalid IDs.
    if (id <= 0) {
      throw new InvalidRequestException("Invalid negative ID.");
    }
    // Find the directive.
    CacheDirective directive = directivesById.get(id);
    if (directive == null) {
      throw new InvalidRequestException("No directive with ID " + id
          + " found.");
    }
    return directive;
  }

  /**
   * Get a CachePool by name, validating that it exists.
   */
  private CachePool getCachePool(String poolName)
      throws InvalidRequestException {
    CachePool pool = cachePools.get(poolName);
    if (pool == null) {
      throw new InvalidRequestException("Unknown pool " + poolName);

View on GitHub (pinned to 2add963021)

Solutions

1. Use a positive cache directive ID returned by hdfs cacheadmin -listDirectives.

When it happens

Trigger: modifyCacheDirective with a negative directive ID.

Common situations: See trigger scenarios.

AI-assisted analysis of apache/hadoop@2add963021 (2026-08-22). Data as JSON: /api/errors/27f36acb565424ec. Report an issue: GitHub.