[
https://issues.apache.org/jira/browse/HDFS-4949?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13805435#comment-13805435
]
Suresh Srinivas commented on HDFS-4949:
---------------------------------------
Given that the merge vote thread has been started, can someone post details
about what functionality from original design has been completed and what is
pending? Looks like the current functionality does not cover quota management.
Any other features pending?
> Centralized cache management in HDFS
> ------------------------------------
>
> Key: HDFS-4949
> URL: https://issues.apache.org/jira/browse/HDFS-4949
> Project: Hadoop HDFS
> Issue Type: New Feature
> Components: datanode, namenode
> Affects Versions: 3.0.0, 2.3.0
> Reporter: Andrew Wang
> Assignee: Andrew Wang
> Attachments: caching-design-doc-2013-07-02.pdf,
> caching-design-doc-2013-08-09.pdf, caching-design-doc-2013-10-24.pdf,
> caching-testplan.pdf, HDFS-4949-consolidated.patch
>
>
> HDFS currently has no support for managing or exposing in-memory caches at
> datanodes. This makes it harder for higher level application frameworks like
> Hive, Pig, and Impala to effectively use cluster memory, because they cannot
> explicitly cache important datasets or place their tasks for memory locality.
--
This message was sent by Atlassian JIRA
(v6.1#6144)
