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https://issues.apache.org/jira/browse/FLINK-17971?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17927993#comment-17927993
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Gabor Somogyi commented on FLINK-17971:
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FLINK-31238 has added such functionality so closing.
> Speed up RocksDB bulk loading with SST generation and ingestion
> ---------------------------------------------------------------
>
> Key: FLINK-17971
> URL: https://issues.apache.org/jira/browse/FLINK-17971
> Project: Flink
> Issue Type: Improvement
> Components: Runtime / State Backends
> Reporter: Joey Pereira
> Assignee: Yuan Mei
> Priority: Minor
> Labels: auto-deprioritized-major, pull-request-available,
> stale-assigned
>
> RocksDB provides an API for creating SST files and ingesting them directly
> into RocksDB:
> [https://github.com/facebook/rocksdb/wiki/Creating-and-Ingesting-SST-files]
> Using this method for bulk loading data into RocksDB may provide a
> significant performance increase, specifically for paths doing inserts such
> as full savepoint recovery and state migrations. This is one method of
> optimizing bulk loads, as described in
> https://issues.apache.org/jira/browse/FLINK-17288
> This was discussed on the user maillist:
> [http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/RocksDB-savepoint-recovery-performance-improvements-td35238.html]
> A draft PR is here: [https://github.com/apache/flink/pull/12345/]
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