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https://issues.apache.org/jira/browse/HDDS-4107?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Glen Geng updated HDDS-4107:
----------------------------
Description:
The disk layout per volume is as follows:
../hdds/VERSION
../hdds/<<scmUuid>>/current/<<containerDir>>/<<containerID>>/metadata
../hdds/<<scmUuid>>/current/<<containerDir>>/<<containerID>>/<<dataDir>>
However, after SCM-HA enabled, a typical SCM group consists of 3 SCMs, each SCM
has its own scmUuid, meanwhile share the same clusterID.
Since federation is not supported yet, this Jira will change scmID to clusterID
for container and volume, the disk layout will as follows:
../hdds/VERSION
../hdds/<<clusterID>>/current/<<containerDir>>/<<containerID>>/metadata
../hdds/<<clusterID>>/current/<<containerDir>>/<<containerID>>/<<dataDir>>
was:
Due to consistency concern, SCM needs to applyTransaction to RaftLog before it
writes to local database and in memory maps. Need refactor the current codes to
put this part to Ratis.
Ratis will write to DB on behalf of SCM.
> replace scmID with clusterID for container and volume at Datanode side
> ----------------------------------------------------------------------
>
> Key: HDDS-4107
> URL: https://issues.apache.org/jira/browse/HDDS-4107
> Project: Hadoop Distributed Data Store
> Issue Type: Sub-task
> Components: SCM
> Reporter: Glen Geng
> Assignee: Glen Geng
> Priority: Major
>
> The disk layout per volume is as follows:
> ../hdds/VERSION
> ../hdds/<<scmUuid>>/current/<<containerDir>>/<<containerID>>/metadata
> ../hdds/<<scmUuid>>/current/<<containerDir>>/<<containerID>>/<<dataDir>>
>
> However, after SCM-HA enabled, a typical SCM group consists of 3 SCMs, each
> SCM has its own scmUuid, meanwhile share the same clusterID.
> Since federation is not supported yet, this Jira will change scmID to
> clusterID for container and volume, the disk layout will as follows:
> ../hdds/VERSION
> ../hdds/<<clusterID>>/current/<<containerDir>>/<<containerID>>/metadata
> ../hdds/<<clusterID>>/current/<<containerDir>>/<<containerID>>/<<dataDir>>
>
>
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