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https://issues.apache.org/jira/browse/HDFS-7343?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16918144#comment-16918144
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David Mollitor commented on HDFS-7343:
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I'd like to see all of the data placement rules condensed down into a series of
discrete rules in a rules engine.
https://www.baeldung.com/java-rule-engines
> 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
> Priority: Major
> Attachments: HDFS-Smart-Storage-Management-update.pdf,
> HDFS-Smart-Storage-Management.pdf,
> HDFSSmartStorageManagement-General-20170315.pdf,
> HDFSSmartStorageManagement-Phase1-20170315.pdf, access_count_tables.jpg,
> move.jpg, tables_in_ssm.xlsx
>
>
> 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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