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From "Guozhang Wang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (KAFKA-4904) Performance of RocksDb with state record cache
Date Sat, 23 Sep 2017 04:28:19 GMT

     [ https://issues.apache.org/jira/browse/KAFKA-4904?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Guozhang Wang updated KAFKA-4904:
---------------------------------
    Fix Version/s:     (was: 1.0.0)
                   1.1.0

> Performance of RocksDb with state record cache
> ----------------------------------------------
>
>                 Key: KAFKA-4904
>                 URL: https://issues.apache.org/jira/browse/KAFKA-4904
>             Project: Kafka
>          Issue Type: Improvement
>          Components: streams
>    Affects Versions: 0.10.2.0
>            Reporter: Eno Thereska
>             Fix For: 1.1.0
>
>
> The performance of RocksDb without any record cache is slightly better than with the
default of 10MB of the default cache. This needs investigating. It is likely to be the case
that this is not an entirely apples-to-apples comparison since the record cache holds records
for a maximum of 'commit.time.ms', which by default is 30 seconds. So the record cache is
adding quite a bit of latency, and we know that, however documenting the tradeoff and looking
if there is any other bugs needs to be done.



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