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From "Guozhang Wang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (KAFKA-5787) StoreChangeLogReader needs to restore partitions that were added post initialization
Date Wed, 30 Aug 2017 17:26:00 GMT

     [ https://issues.apache.org/jira/browse/KAFKA-5787?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Guozhang Wang updated KAFKA-5787:
---------------------------------
    Fix Version/s: 1.0.0

> StoreChangeLogReader needs to restore partitions that were added post initialization
> ------------------------------------------------------------------------------------
>
>                 Key: KAFKA-5787
>                 URL: https://issues.apache.org/jira/browse/KAFKA-5787
>             Project: Kafka
>          Issue Type: Bug
>          Components: streams
>    Affects Versions: 0.11.0.1, 1.0.0
>            Reporter: Damian Guy
>            Assignee: Damian Guy
>            Priority: Blocker
>             Fix For: 0.11.0.1, 1.0.0
>
>
> Investigation of {{KStreamRepartitionJoinTest}} failures uncovered this bug. If a task
fails during initialization due to a {{LockException}}, its changelog partitions are not immediately
added to the {{StoreChangelogReader}} as the thread doesn't hold the lock. However {{StoreChangelogReader#restore}}
will be called and it sets the initialized flag. On a subsequent successfull call to initialize
the new tasks the partitions are added to the {{StoreChangelogReader}}, however as it is already
initialized these new partitions will never be restored. So the task will remain in a non-running
state forever



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