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  1. Hadoop HDFS
  2. HDFS-10594

HDFS-4949 should support recursive cache directives

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    Details

    • Type: Improvement
    • Status: Patch Available
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: 2.7.1
    • Fix Version/s: None
    • Component/s: caching
    • Labels:
      None

      Description

      In CacheReplicationMonitor#rescanCacheDirectives, it should recursively rescan the path when the inode of the path is a directory. In these 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());
                }
              }
             }
      

      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.

        Attachments

        1. HDFS-10594.001.patch
          2 kB
          Yiqun Lin
        2. HDFS-10594.002.patch
          24 kB
          Yiqun Lin
        3. HDFS-10594.003.patch
          24 kB
          Yiqun Lin

          Activity

            People

            • Assignee:
              linyiqun Yiqun Lin
              Reporter:
              linyiqun Yiqun Lin
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              Dates

              • Created:
                Updated: