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https://issues.apache.org/jira/browse/HDDS-15394?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hui Fei updated HDDS-15394:
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Target Version/s: 2.3.0 (was: 2.2.0)
> Implement Full diff with multi stage sequential read
> ----------------------------------------------------
>
> Key: HDDS-15394
> URL: https://issues.apache.org/jira/browse/HDDS-15394
> Project: Apache Ozone
> Issue Type: Sub-task
> Reporter: Saketa Chalamchala
> Assignee: Saketa Chalamchala
> Priority: Major
>
> Implement a multi-stage scan for an optimized full diff:
> 1. Full table scan of `toSnapshot.directoryTable`. Use `updateID >
> fromSnapshotDbTxSequenceNumber` filter to build `newList` tracking diff
> candidates. Also populate intermediate column families used for `toSnapshot`
> key's path resolution.
> 2. Full table scan of `fromSnapshot.directoryTable` to build `oldList` for
> diff candidates and intermediate column families used for `fromSnapshot`
> key's path resolution.
> 3. Full table scan of `toSnapshot.keyTable` with `updateID` gating reading
> keys into `newList`.
> 4. Full table scan of `fromSnapshot.keyTable` with reading keys into
> `oldList` for diff candidates.
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