hadoop-hdfs-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Zesheng Wu (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-6382) HDFS File/Directory TTL
Date Tue, 13 May 2014 08:50:14 GMT
Zesheng Wu created HDFS-6382:
--------------------------------

             Summary: HDFS File/Directory TTL
                 Key: HDFS-6382
                 URL: https://issues.apache.org/jira/browse/HDFS-6382
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: hdfs-client, namenode
    Affects Versions: 2.4.0
            Reporter: Zesheng Wu


In production environment, we always have scenario like this, we want to backup files on hdfs
for some time and then hope to delete theses files automatically. For example, we keep only
1 day's logs on local disk due to limited disk space, but we need to keep about 1 month's
logs in order to debug program bugs, so we keep all the logs on hdfs and delete logs which
are older than 1 month. This is a typical scenario of HDFS TTL. So here we propose that hdfs
can support TTL.

Following are some details of this proposal:
1. HDFS can support TTL on a specified file or directory
2. If a TTL is set on a file, the file will be deleted automatically after the TTL is expired
3. If a TTL is set on a directory, the child files and directories will be deleted automatically
after the TTL is expired
4. The child file/directory's TTL configuration should override its parent directory's
5. A global configuration is needed to configure that whether the deleted files/directories
should go to the trash or not
6. A global configuration is needed to configure that whether a directory with TTL should
be deleted when it is emptied by TTL mechanism or not.



--
This message was sent by Atlassian JIRA
(v6.2#6252)

Mime
View raw message