[
https://issues.apache.org/jira/browse/HDFS-7859?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15417965#comment-15417965
]
Zhe Zhang commented on HDFS-7859:
---------------------------------
Thanks for the comment Kai. Even without the patch in this JIRA, we are already
supporting multiple built-in policies ({{SYS_POLICIES}}). This JIRA adds
support to add non-builtin policies -- therefore we need to persist EC polices
in fsimage (otherwise all policies are just in the code). And we are adding the
{{addErasureCodingPolicy}} API in this change. Sounds like we both agree
{{removeErasureCodingPolicy}} can be done separately. But I think that
follow-on should be done before beta release for API stability. [~xinwei] Do
you have time to work on that as well? Thanks.
> Erasure Coding: Persist erasure coding policies in NameNode
> -----------------------------------------------------------
>
> Key: HDFS-7859
> URL: https://issues.apache.org/jira/browse/HDFS-7859
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Kai Zheng
> Assignee: Xinwei Qin
> Labels: BB2015-05-TBR, hdfs-ec-3.0-must-do
> Attachments: HDFS-7859-HDFS-7285.002.patch,
> HDFS-7859-HDFS-7285.002.patch, HDFS-7859-HDFS-7285.003.patch,
> HDFS-7859.001.patch, HDFS-7859.002.patch, HDFS-7859.004.patch,
> HDFS-7859.005.patch
>
>
> In meetup discussion with [~zhz] and [~jingzhao], it's suggested that we
> persist EC schemas in NameNode centrally and reliably, so that EC zones can
> reference them by name efficiently.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org
For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
