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Posted to dev@kafka.apache.org by "Damian Guy (JIRA)" <ji...@apache.org> on 2016/11/04 12:40:58 UTC

[jira] [Work started] (KAFKA-4379) Remove caching of dirty and removed keys from StoreChangeLogger

     [ https://issues.apache.org/jira/browse/KAFKA-4379?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Work on KAFKA-4379 started by Damian Guy.
-----------------------------------------
> Remove caching of dirty and removed keys from StoreChangeLogger
> ---------------------------------------------------------------
>
>                 Key: KAFKA-4379
>                 URL: https://issues.apache.org/jira/browse/KAFKA-4379
>             Project: Kafka
>          Issue Type: Improvement
>          Components: streams
>    Affects Versions: 0.10.1.0
>            Reporter: Damian Guy
>            Assignee: Damian Guy
>            Priority: Minor
>             Fix For: 0.10.1.1
>
>
> The StoreChangeLogger currently keeps a cache of dirty and removed keys and will batch the changelog records such that we don't send a record for each update. However, with KIP-63 this is unnecessary as the batching and de-duping is done by the caching layer. Further, the StoreChangeLogger relies on context.timestamp() which is likely to be incorrect when caching is enabled



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