[ https://issues.apache.org/jira/browse/HDFS-10149?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Vinayakumar B deleted HDFS-10149: --------------------------------- > CLONE - Erasure coding: store EC schema and cell size in INodeFile and > eliminate notion of EC zones > --------------------------------------------------------------------------------------------------- > > Key: HDFS-10149 > URL: https://issues.apache.org/jira/browse/HDFS-10149 > Project: Hadoop HDFS > Issue Type: Sub-task > Reporter: dragon > Assignee: Zhe Zhang > > We have [discussed | > https://issues.apache.org/jira/browse/HDFS-7285?focusedCommentId=14357754&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14357754] > storing EC schema with files instead of EC zones and recently revisited the > discussion under HDFS-8059. > As a recap, the _zone_ concept has severe limitations including renaming and > nested configuration. Those limitations are valid in encryption for security > reasons and it doesn't make sense to carry them over in EC. > This JIRA aims to store EC schema and cell size on {{INodeFile}} level. For > simplicity, we should first implement it as an xattr and consider memory > optimizations (such as moving it to file header) as a follow-on. We should > also disable changing EC policy on a non-empty file / dir in the first phase. -- This message was sent by Atlassian JIRA (v6.3.4#6332)