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https://issues.apache.org/jira/browse/KAFKA-4876?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gwen Shapira updated KAFKA-4876:
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Fix Version/s: (was: 0.10.2.1)
> WindowStore.fetch(key, 0, Long.MaxValue) is very slow
> -----------------------------------------------------
>
> Key: KAFKA-4876
> URL: https://issues.apache.org/jira/browse/KAFKA-4876
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Affects Versions: 0.10.1.0, 0.10.2.0
> Reporter: Xavier Léauté
>
> Relates to KAFKA-4851
> Querying a window store over the entire time range (i.e. {{\[0,
> Long.MAX_VALUE\]}} is extremely slow.
> Here's a simple benchmark that shows it takes about 400ms to query just a
> single key with a timestamp as of today's date.
> https://github.com/xvrl/kafka/commit/045b94d4c70d730d10ed492efeb0fd85a70757ae#diff-46a87bcb14bccc04c8ad716a043fc78eR150
> {code}
> Benchmark Mode Cnt Score Error
> Units
> RocksDBWindowStoreTest.benchmarkStoreFetch avgt 20 401.635 ± 46.130
> ms/op
> {code}
> Using timestamps far out in the future (e.g. 0x7a00000000000000L) the fetch
> operation essentially never completes.
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