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https://issues.apache.org/jira/browse/HDDS-1105?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated HDDS-1105:
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Labels: pull-request-available (was: )
> Add mechanism in Recon to obtain DB snapshot 'delta' updates from Ozone
> Manager.
> --------------------------------------------------------------------------------
>
> Key: HDDS-1105
> URL: https://issues.apache.org/jira/browse/HDDS-1105
> Project: Hadoop Distributed Data Store
> Issue Type: Sub-task
> Reporter: Aravindan Vijayan
> Assignee: Aravindan Vijayan
> Priority: Major
> Labels: pull-request-available
>
> *Some context*
> The FSCK server will periodically invoke this OM API passing in the most
> recent sequence number of its own RocksDB instance. The OM will use the
> RockDB getUpdateSince() API to answer this query. Since the getUpdateSince
> API only works against the RocksDB WAL, we have to configure OM RocksDB WAL
> (https://github.com/facebook/rocksdb/wiki/Write-Ahead-Log) with sufficient
> max size to make this API useful. If the OM cannot get all transactions since
> the given sequence number (due to WAL flushing), it can error out. In that
> case the FSCK server can fall back to getting the entire checkpoint snapshot
> implemented in HDDS-1085.
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