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https://issues.apache.org/jira/browse/HDFS-7343?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wei Zhou updated HDFS-7343:
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Attachment: HDFS-Smart-Storage-Management-update.pdf
Based on the discussion and feedbacks collected, we updated the design
document. There are many changes compared with the previous version:
# The ultimate target is separated into two phases, and in phase 1, we focus on
implement a rule-based automation engine that integrates the facilities in
HDFS. We will make it an end-to-end intelligent solution in phase 2.
# Kafka service dependency removed, SSM gets info directly from NN.
# DNs report metrics and events to NN instead of been polled by SSM directly.
# Metrics, events and some other info are maintained in NN off-heap memory and
stored in NN.
# SSM is stateless and polling info from NN when starts up.
[~andrew.wang], [~anu], [~xiaochen], [~eddyxu] and anybody else, please help
review it. Your suggestion or comment is appreciated. Thanks!
> 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
>
>
> 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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