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From "Anu Engineer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7343) HDFS smart storage management
Date Mon, 09 Jan 2017 17:14:59 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7343?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15812285#comment-15812285
] 

Anu Engineer commented on HDFS-7343:
------------------------------------

bq. Some methodologies existed in NN to collect metrics and events from DNs, so it's better
to store these data in NN to make SSM stateless as suggested by Andrew. 

Could you please point me to this suggestion from Andrew. I would like to understand what
he is saying better.

> HDFS smart storage management
> -----------------------------
>
>                 Key: HDFS-7343
>                 URL: https://issues.apache.org/jira/browse/HDFS-7343
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Kai Zheng
>            Assignee: Wei Zhou
>         Attachments: HDFS-Smart-Storage-Management-update.pdf, HDFS-Smart-Storage-Management.pdf,
move.jpg
>
>
> As discussed in HDFS-7285, it would be better to have a comprehensive and flexible storage
policy engine considering file attributes, metadata, data temperature, storage type, EC codec,
available hardware capabilities, user/application preference and etc.
> Modified the title for re-purpose.
> We'd extend this effort some bit and aim to work on a comprehensive solution to provide
smart storage management service in order for convenient, intelligent and effective utilizing
of erasure coding or replicas, HDFS cache facility, HSM offering, and all kinds of tools (balancer,
mover, disk balancer and so on) in a large cluster.



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