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https://issues.apache.org/jira/browse/KAFKA-3777?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Guozhang Wang updated KAFKA-3777:
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Description:
The LRU cache that is currently inside the RocksDbStore class. As part of
KAFKA-3776 it needs to come outside of RocksDbStore and be a separate component
used in:
1. KGroupedStream.aggregate() / reduce(),
2. KStream.aggregateByKey() / reduceByKey(),
3. KTable.to()
As all of the above operators can have a cache on top to deduplicate the
materialized state store in RocksDB.
was:The LRU cache that is currently inside the RocksDbStore needs to come
outside of RocksDbStore and be a separate component used in
KGroupedStream.aggregate() / reduce(), and KStream.aggregateByKey() /
reduceByKey().
> Extract the LRU cache out of RocksDBStore
> -----------------------------------------
>
> Key: KAFKA-3777
> URL: https://issues.apache.org/jira/browse/KAFKA-3777
> Project: Kafka
> Issue Type: Sub-task
> Components: streams
> Affects Versions: 0.10.1.0
> Reporter: Eno Thereska
> Fix For: 0.10.1.0
>
>
> The LRU cache that is currently inside the RocksDbStore class. As part of
> KAFKA-3776 it needs to come outside of RocksDbStore and be a separate
> component used in:
> 1. KGroupedStream.aggregate() / reduce(),
> 2. KStream.aggregateByKey() / reduceByKey(),
> 3. KTable.to()
> As all of the above operators can have a cache on top to deduplicate the
> materialized state store in RocksDB.
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