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https://issues.apache.org/jira/browse/SPARK-48742?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jing Zhan updated SPARK-48742:
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Description: Introducing virtual column family to RocksDB. We attach an
8-byte-Id prefix as column family identifier for each of the key row that is
put into RocksDB. The encoding and decoding of the virtual column family prefix
happens at the {{RocksDBKeyEncoder}} layer as we can pre-allocate extra 8 bytes
and avoid additional memcpy.
> Virtual Column Family for RocksDB
> ---------------------------------
>
> Key: SPARK-48742
> URL: https://issues.apache.org/jira/browse/SPARK-48742
> Project: Spark
> Issue Type: Task
> Components: Structured Streaming
> Affects Versions: 4.0.0
> Reporter: Jing Zhan
> Priority: Major
>
> Introducing virtual column family to RocksDB. We attach an 8-byte-Id prefix
> as column family identifier for each of the key row that is put into RocksDB.
> The encoding and decoding of the virtual column family prefix happens at the
> {{RocksDBKeyEncoder}} layer as we can pre-allocate extra 8 bytes and avoid
> additional memcpy.
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