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https://issues.apache.org/jira/browse/HDDS-1649?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hanisha Koneru updated HDDS-1649:
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Description:
Installing a DB checkpoint on the OM involves following steps:
1. When an OM follower receives installSnapshot notification from OM leader, it
should initiate a new checkpoint on the OM leader and download that checkpoint.
2. After downloading the checkpoint, the StateMachine must be paused so that
the old OM DB can be replaced with the new downloaded checkpoint.
3. The OM should be reloaded with the new state . All the services having a
dependency on the OM DB (such as MetadataManager, KeyManager etc.) must be
re-initialized/ restarted.
4. Once the OM is ready with the new state, the state machine must be unpaused
to resume participating in the Ratis ring.
was:When an OM follower receives installSnapshot notification from OM leader,
it should initiate a new checkpoint on the OM leader and download that
checkpoint.
> On installSnapshot notification from OM leader, download checkpoint and
> reload OM state
> ---------------------------------------------------------------------------------------
>
> Key: HDDS-1649
> URL: https://issues.apache.org/jira/browse/HDDS-1649
> Project: Hadoop Distributed Data Store
> Issue Type: Sub-task
> Reporter: Hanisha Koneru
> Assignee: Hanisha Koneru
> Priority: Major
> Labels: pull-request-available
> Time Spent: 3h 10m
> Remaining Estimate: 0h
>
> Installing a DB checkpoint on the OM involves following steps:
> 1. When an OM follower receives installSnapshot notification from OM leader,
> it should initiate a new checkpoint on the OM leader and download that
> checkpoint.
> 2. After downloading the checkpoint, the StateMachine must be paused so that
> the old OM DB can be replaced with the new downloaded checkpoint.
> 3. The OM should be reloaded with the new state . All the services having a
> dependency on the OM DB (such as MetadataManager, KeyManager etc.) must be
> re-initialized/ restarted.
> 4. Once the OM is ready with the new state, the state machine must be
> unpaused to resume participating in the Ratis ring.
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