[jira] [Work started] (KAFKA-4283) records deleted from CachingKeyValueStore still appear in range and all queries

["Damian Guy (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KAFKA-4283?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Work on KAFKA-4283 started by Damian Guy.
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> records deleted from CachingKeyValueStore still appear in range and all queries
> -------------------------------------------------------------------------------
>
>                 Key: KAFKA-4283
>                 URL: https://issues.apache.org/jira/browse/KAFKA-4283
>             Project: Kafka
>          Issue Type: Bug
>          Components: streams
>    Affects Versions: 0.10.1.0
>            Reporter: Damian Guy
>            Assignee: Damian Guy
>             Fix For: 0.10.1.1
>
>
> Records deleted from CachingKeyValueStore appear in range and all queries. The deleted record is replaced with an LRUCacheEntry(null), so that when a flush happens the deletion can be sent downstream and removed from the underlying store.
> As this is valid and needed, the iterator used when querying a cached store needs to be aware of the entries where LRUCacheEntry.value == null and skip over them



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