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https://issues.apache.org/jira/browse/KAFKA-14247?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Philip Nee updated KAFKA-14247:
-------------------------------
    Description: 
The background thread runs inside of the DefaultEventHandler to consume events 
from the ApplicationEventQueue and produce events to the BackgroundEventQueue.

The background thread runnable consist of a loop that tries to poll events from 
the ApplicationQueue, processes the event if there are any, and poll 
networkClient.

In this implementation, the DefaultEventHandler spawns a thread that runs the 
BackgroundThreadRunnable.  The runnable, as of the current PR, does the 
following things:
 # Initialize the networkClient
 # Poll ApplicationEvent from the queue if there's any
 # process the event
 # poll the networkClient

PR: https://github.com/apache/kafka/pull/12672

  was:
The background thread runs inside of the DefaultEventHandler to consume events 
from the ApplicationEventQueue and produce events to the BackgroundEventQueue.

The background thread runnable consist of a loop that tries to poll events from 
the ApplicationQueue, processes the event if there are any, and poll 
networkClient.

In this implementation, the DefaultEventHandler spawns a thread that runs the 
BackgroundThreadRunnable.  The runnable, as of the current PR, does the 
following things:
 # Initialize the networkClient
 # Poll ApplicationEvent from the queue if there's any
 # process the event
 # poll the networkClient

PR: [https://github.com/apache/kafka/pull/12663]


> Implement EventHandler interface and DefaultEventHandler
> --------------------------------------------------------
>
>                 Key: KAFKA-14247
>                 URL: https://issues.apache.org/jira/browse/KAFKA-14247
>             Project: Kafka
>          Issue Type: Sub-task
>          Components: consumer
>            Reporter: Philip Nee
>            Assignee: Philip Nee
>            Priority: Major
>
> The background thread runs inside of the DefaultEventHandler to consume 
> events from the ApplicationEventQueue and produce events to the 
> BackgroundEventQueue.
> The background thread runnable consist of a loop that tries to poll events 
> from the ApplicationQueue, processes the event if there are any, and poll 
> networkClient.
> In this implementation, the DefaultEventHandler spawns a thread that runs the 
> BackgroundThreadRunnable.  The runnable, as of the current PR, does the 
> following things:
>  # Initialize the networkClient
>  # Poll ApplicationEvent from the queue if there's any
>  # process the event
>  # poll the networkClient
> PR: https://github.com/apache/kafka/pull/12672



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