[jira] [Created] (HDFS-5284) Flatten INode hierarchy

["Tsz Wo (Nicholas), SZE (JIRA)" <ji...@apache.org>]

Tsz Wo (Nicholas), SZE created HDFS-5284:
--------------------------------------------

             Summary: Flatten INode hierarchy
                 Key: HDFS-5284
                 URL: https://issues.apache.org/jira/browse/HDFS-5284
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: namenode
            Reporter: Tsz Wo (Nicholas), SZE
            Assignee: Tsz Wo (Nicholas), SZE


Currently, we have a complicated inode hierarchy for representing different states of a file or a directory.  For example,  when a file is being created, it is represented by an INodeFileUnderConstruction.  When a file is being closed, the inode is replaced by an INodeFile.  If it is reopened for append, the inode is replaced again by an INodeFileUnderConstruction.  This JIRA is to flatten the inode hierarchy.  We may also improve the performance by eliminating the inode replacement in runtime.



--
This message was sent by Atlassian JIRA
(v6.1#6144)