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https://issues.apache.org/jira/browse/HDDS-13011?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Swaminathan Balachandran reassigned HDDS-13011:
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Assignee: Saketa Chalamchala
> Disable Snapshot DAG Pruner Thread
> ----------------------------------
>
> Key: HDDS-13011
> URL: https://issues.apache.org/jira/browse/HDDS-13011
> Project: Apache Ozone
> Issue Type: Sub-task
> Reporter: Swaminathan Balachandran
> Assignee: Saketa Chalamchala
> Priority: Major
>
> After snapshot compaction it can so happen that the sst file may not exist in
> the snapshot. since the LSM tree structure of the snapshots would have
> changed though the contents of the rocksdb is the same. Thus we have to
> disable the DAG pruner which deletes output sst files and change snapshot
> diff to look for the delta sst file in the AOS rocksdb directory and then
> look at the backup sst file directory in the same order for creating a
> hardlink for the delta sst files instead of looking at source and target
> snapshot.
> [https://github.com/apache/ozone/blob/413538480154dba6199fcfb95545a0849488af77/hadoop-hdds/rocksdb-checkpoint-differ/src/main/java/org/apache/ozone/rocksdiff/RocksDBCheckpointDiffer.java#L771]
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