[jira] [Created] (HDFS-10594) CacheReplicationMonitor should recursively rescan the path when the inode of the path is directory

["Yiqun Lin (JIRA)" <ji...@apache.org>]

Yiqun Lin created HDFS-10594:
--------------------------------

             Summary: CacheReplicationMonitor should recursively rescan the path when the inode of the path is directory
                 Key: HDFS-10594
                 URL: https://issues.apache.org/jira/browse/HDFS-10594
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: caching
    Affects Versions: 2.7.1
            Reporter: Yiqun Lin
            Assignee: Yiqun Lin


In {{CacheReplicationMonitor#rescanCacheDirectives}}, it should recursively rescan the path when the inode of the path is a directory. In these code:
{code}
} else if (node.isDirectory()) {
        INodeDirectory dir = node.asDirectory();
        ReadOnlyList<INode> children = dir
            .getChildrenList(Snapshot.CURRENT_STATE_ID);
        for (INode child : children) {
          if (child.isFile()) {
            rescanFile(directive, child.asFile());
          }
        }
       }
{code}
If we did the this logic, it means that some inode files will be ignored when the child inode is also a directory and there are some other child inode file in it. Finally the child's child file which belong to this path will not be cached.



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