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https://issues.apache.org/jira/browse/HDDS-1084?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16779604#comment-16779604
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Siddharth Wagle commented on HDDS-1084:
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[~elek] Thanks for the insightful comments. Q1 is definitely something we can
add to the next draft of the doc and figure out how we can surface this info.
I think a bunch of stats that Recon collects can be exposed has higher order
metric data compared to what OM / SCM generate and we can send those to
Prometheus backend. So, even though a point in time snapshot is what Recon DB
represents a historical timeseries would be valuable too.
I haven't worked out the specific timeseries we will support but thanks for
putting that on the plate.
> Ozone Recon Service
> -------------------
>
> Key: HDDS-1084
> URL: https://issues.apache.org/jira/browse/HDDS-1084
> Project: Hadoop Distributed Data Store
> Issue Type: New Feature
> Components: fsck
> Affects Versions: 0.4.0
> Reporter: Siddharth Wagle
> Assignee: Siddharth Wagle
> Priority: Major
> Attachments: Ozone_Recon_Design_V1_Draft.pdf
>
>
> Recon Server at a high level will maintain a global view of Ozone that is not
> available from SCM or OM. Things like how many volumes exist; and how many
> buckets exist per volume; which volume has maximum buckets; which are buckets
> that have not been accessed for a year, which are the corrupt blocks, which
> are blocks on data nodes which are not used; and answer similar queries.
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