apache/hadoop · error · FileNotFoundException

cannot find <path>

Error message

cannot find <path>

What it means

Error "cannot find <path>" thrown in apache/hadoop.

Source

Thrown at hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirectory.java:1619

   * Reset the entire namespace tree.
   */
  void reset() {
    writeLock();
    try {
      rootDir = createRoot(getFSNamesystem());
      inodeMap.clear();
      addToInodeMap(rootDir);
      nameCache.reset();
      inodeId.setCurrentValue(INodeId.LAST_RESERVED_ID);
    } finally {
      writeUnlock();
    }
  }

  static INode resolveLastINode(INodesInPath iip) throws FileNotFoundException {
    INode inode = iip.getLastINode();
    if (inode == null) {
      throw new FileNotFoundException("cannot find " + iip.getPath());
    }
    return inode;
  }

  /**
   * Caches frequently used file names to reuse file name objects and
   * reduce heap size.
   */
  void cacheName(INode inode) {
    // Name is cached only for files
    if (!inode.isFile()) {
      return;
    }
    ByteArray name = new ByteArray(inode.getLocalNameBytes());
    name = nameCache.put(name);
    if (name != null) {
      inode.setLocalName(name.getBytes());
    }

View on GitHub (pinned to 2add963021)

Solutions

1. Verify the path exists; resolve via inode path only when the inode is still present in the namespace.

When it happens

Trigger: Looking up inodes for a path that cannot be resolved to any inode in the namespace.

Common situations: See trigger scenarios.

AI-assisted analysis of apache/hadoop@2add963021 (2026-08-22). Data as JSON: /api/errors/242e4788a829d5c6. Report an issue: GitHub.