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https://issues.apache.org/jira/browse/HDDS-1475?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Bharat Viswanadham updated HDDS-1475:
-------------------------------------
    Description: 
In OzoneContainer start() we have 
{code:java}
startContainerScrub();
writeChannel.start();
readChannel.start();
hddsDispatcher.init();
hddsDispatcher.setScmId(scmId);{code}
 

Suppose here if readChannel.start() failed due to some reason, from 
VersionEndPointTask, we try to start OzoneContainer again. This will cause if a 
service is already started. 

 

Fix the logic such a way that if service is started, don't attempt to start the 
service again. Similar changes needed to be done for stop().

  was:
In OzoneContainer start() we have 

startContainerScrub();
writeChannel.start();
readChannel.start();
hddsDispatcher.init();
hddsDispatcher.setScmId(scmId);

 

Suppose here if readChannel.start() failed due to some reason, from 
VersionEndPointTask, we try to start OzoneContainer again. This will cause if a 
service is already started. 

 

Fix the logic such a way that if service is started, don't attempt to start the 
service again. Similar changes needed to be done for stop().


> Fix OzoneContainer start method
> -------------------------------
>
>                 Key: HDDS-1475
>                 URL: https://issues.apache.org/jira/browse/HDDS-1475
>             Project: Hadoop Distributed Data Store
>          Issue Type: Bug
>          Components: Ozone Datanode
>            Reporter: Bharat Viswanadham
>            Priority: Major
>              Labels: newbie
>
> In OzoneContainer start() we have 
> {code:java}
> startContainerScrub();
> writeChannel.start();
> readChannel.start();
> hddsDispatcher.init();
> hddsDispatcher.setScmId(scmId);{code}
>  
> Suppose here if readChannel.start() failed due to some reason, from 
> VersionEndPointTask, we try to start OzoneContainer again. This will cause if 
> a service is already started. 
>  
> Fix the logic such a way that if service is started, don't attempt to start 
> the service again. Similar changes needed to be done for stop().



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