[
https://issues.apache.org/jira/browse/KAFKA-4123?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Damian Guy updated KAFKA-4123:
------------------------------
Summary: Queryable State returning null for key before all stores in
instance have been initialized (was: Queryable State returning null for key
before all stores in instance have been intialized)
> Queryable State returning null for key before all stores in instance have
> been initialized
> ------------------------------------------------------------------------------------------
>
> Key: KAFKA-4123
> URL: https://issues.apache.org/jira/browse/KAFKA-4123
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Affects Versions: 0.10.1.0
> Reporter: Damian Guy
> Assignee: Damian Guy
> Fix For: 0.10.1.0
>
>
> A couple of problems:
> 1. A RocksDBStore instance is currently marked as open before the store has
> been initialized from its changelog. This can result in reading old/invalid
> data when querying.
> 2. In the case of multiple partitions and the tasks are being initialized it
> is always possible that 1 or more StateStores will be intialized before the
> complete set of stores in the Streams Instance are initialized. Currently
> when this happens a query can return null because it will look in the
> existing initialized stores. However, the key may exist in one of the
> non-initialized instances. We need to wait for all Stores in the instance to
> be initialized before allowing queries to progress.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
