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From "Kai Zheng (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7859) Erasure Coding: Persist erasure coding policies in NameNode
Date Tue, 05 Sep 2017 02:18:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7859?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16153041#comment-16153041
] 

Kai Zheng commented on HDFS-7859:
---------------------------------

6. Could we have a separate issue to refactor the existing codes, renaming addErasureCodePolicy
to addErasureCodingPolicy and so on ...
{code}
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirErasureCodingOp.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirErasureCodingOp.java
@@ -214,7 +214,10 @@ static FileStatus unsetErasureCodingPolicy(final FSNamesystem fsn,
   static ErasureCodingPolicy addErasureCodePolicy(final FSNamesystem fsn,
       ErasureCodingPolicy policy) throws IllegalECPolicyException {
...
...
{code}

> 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: SammiChen
>              Labels: hdfs-ec-3.0-must-do
>         Attachments: HDFS-7859.001.patch, HDFS-7859.002.patch, HDFS-7859.004.patch, HDFS-7859.005.patch,
HDFS-7859.006.patch, HDFS-7859.007.patch, HDFS-7859.008.patch, HDFS-7859.009.patch, HDFS-7859.010.patch,
HDFS-7859.011.patch, HDFS-7859.012.patch, HDFS-7859-HDFS-7285.002.patch, HDFS-7859-HDFS-7285.002.patch,
HDFS-7859-HDFS-7285.003.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.



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