hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "SammiChen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11072) Add ability to unset and change directory EC policy
Date Fri, 28 Oct 2016 02:20:58 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11072?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15614029#comment-15614029

SammiChen commented on HDFS-11072:

Hi [~andrew.wang], thanks for fire this JIRA, I'd like to work on it. Here is what I'am understanding.
Correct me if I do't follow your thoughts.
Assume we create a directory A, set EC policy EC1 on A. then we create a sub directory B under
A. When B is created, it will inherit EC policy EC1 from A, and save it as its own meta data.
Later when directory A's EC policy EC1 is unset or changed to EC2, that would not impact directory
B. Directory B will always has EC policy EC1 unless user explicitly change it. With this behavior,
we'are going to support the interleaved EC policy directory and 3x replication directory.

> Add ability to unset and change directory EC policy
> ---------------------------------------------------
>                 Key: HDFS-11072
>                 URL: https://issues.apache.org/jira/browse/HDFS-11072
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: erasure-coding
>    Affects Versions: 3.0.0-alpha1
>            Reporter: Andrew Wang
>              Labels: hdfs-ec-3.0-must-do
> Since the directory-level EC policy simply applies to files at create time, it makes
sense to make it more similar to storage policies and allow changing and unsetting the policy.

This message was sent by Atlassian JIRA

To unsubscribe, e-mail: hdfs-issues-unsubscribe@hadoop.apache.org
For additional commands, e-mail: hdfs-issues-help@hadoop.apache.org

View raw message