[jira] [Created] (ATLAS-2047) NotificationHookConsumer: Exception Thrown by Kafka Consumer Ends up Filling Logs Due to Incorrect Handling

["Ashutosh Mestry (JIRA)" <ji...@apache.org>]

Ashutosh Mestry created ATLAS-2047:
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             Summary: NotificationHookConsumer: Exception Thrown by Kafka Consumer Ends up Filling Logs Due to Incorrect Handling 
                 Key: ATLAS-2047
                 URL: https://issues.apache.org/jira/browse/ATLAS-2047
             Project: Atlas
          Issue Type: Bug
          Components:  atlas-core
    Affects Versions: 0.8-incubating, trunk
            Reporter: Ashutosh Mestry
            Assignee: Ashutosh Mestry
             Fix For: trunk


*Background*

_KafkaConsumer_ is abstracted by _AtlasKafkaConsumer_. This is run using _HookConsumer_ which is derived from _kafka.utils.ShutdownableThread_.

The _ShutdownableThread_ manages the thread. It handles exceptions thrown in the _doWork_ method and logs them.

*Problem*
Exception reported in the bug is thrown by _KafkaConsumer_ is handed by _HookConsumer_. Exception is logged but the thread keeps running. In cases where Kafa is in irrecoverable state, this behavior ends up filling up logs and providing no value in return.

*Solution*
Let _ShutdownableThread_ hand exceptions thrown by _KafkaConsumer_. Stop the thread if _KafkaConsumer_ suffers from irrecoverable error. This will avoid the situation described in the problem section.



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