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From "Manoj Govindassamy (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-11505) Do not enable any erasure coding policies by default
Date Mon, 13 Mar 2017 22:46:41 GMT

     [ https://issues.apache.org/jira/browse/HDFS-11505?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Manoj Govindassamy updated HDFS-11505:
--------------------------------------
    Attachment: HDFS-11505.04.patch

Thanks [~andrew.wang] and [~tasanuma0829] for the review. Attaching v04 patch to enable EC
policy in the needed tests only. Also, extended {{TestEnabledECPolicies#testValid}} based
on Takanobu's comment. Please tae a look at the patch. 

> Do not enable any erasure coding policies by default
> ----------------------------------------------------
>
>                 Key: HDFS-11505
>                 URL: https://issues.apache.org/jira/browse/HDFS-11505
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: erasure-coding
>    Affects Versions: 3.0.0-alpha3
>            Reporter: Andrew Wang
>            Assignee: Manoj Govindassamy
>              Labels: hdfs-ec-3.0-must-do
>         Attachments: HDFS-11505.01.patch, HDFS-11505.02.patch, HDFS-11505.03.patch, HDFS-11505.04.patch
>
>
> As discussed on HDFS-11314, administrators need to choose the correct set of EC policies
based on cluster size and desired fault-tolerance properties.
> This means we should not enable any EC policies by default, since any default value could
be incorrect.



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