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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (KAFKA-4532) StateStores can be connected to the wrong source topic resulting in incorrect metadata returned from IQ
Date Tue, 13 Dec 2016 20:37:59 GMT

    [ https://issues.apache.org/jira/browse/KAFKA-4532?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15746201#comment-15746201
] 

ASF GitHub Bot commented on KAFKA-4532:
---------------------------------------

Github user asfgit closed the pull request at:

    https://github.com/apache/kafka/pull/2250


> StateStores can be connected to the wrong source topic resulting in incorrect metadata
returned from IQ
> -------------------------------------------------------------------------------------------------------
>
>                 Key: KAFKA-4532
>                 URL: https://issues.apache.org/jira/browse/KAFKA-4532
>             Project: Kafka
>          Issue Type: Bug
>          Components: streams
>    Affects Versions: 0.10.1.0, 0.10.1.1, 0.10.2.0
>            Reporter: Damian Guy
>            Assignee: Damian Guy
>             Fix For: 0.10.2.0
>
>
> When building a topology with tables and StateStores, the StateStores are mapped to the
source topic names. This map is retrieved via {{TopologyBuilder.stateStoreNameToSourceTopics()}}
and is used in Interactive Queries to find the source topics and partitions when resolving
the partitions that particular keys will be in.
> There is an issue where by this mapping for a table that is originally created with {{builder.table("topic",
"table");}}, and then is subsequently used in a join, is changed to the join topic. This is
because the mapping is updated during the call to {{topology.connectProcessorAndStateStores(..)}}.

> In the case that the {{stateStoreNameToSourceTopics}} Map already has a value for the
state store name it should not update the Map.



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