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https://issues.apache.org/jira/browse/HADOOP-18905?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ayush Saxena resolved HADOOP-18905.
-----------------------------------
    Fix Version/s: 3.4.0
     Hadoop Flags: Reviewed
       Resolution: Fixed

> Negative timeout in ZKFailovercontroller due to overflow
> --------------------------------------------------------
>
>                 Key: HADOOP-18905
>                 URL: https://issues.apache.org/jira/browse/HADOOP-18905
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 3.3.6
>            Reporter: ConfX
>            Assignee: ConfX
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 3.4.0
>
>
> Graceful fence timeout of FailoverController in ZKFailovercontroller equals 
> to `ha.failover-controller.graceful-fence.rpc-timeout.ms` * 2. Since users 
> are unaware of this calculation, it thus has risks of overflowing to a 
> negative number if users set 
> `ha.failover-controller.graceful-fence.rpc-timeout.ms` to a large value.
>  
> To reproduce:
> 1. set `ha.failover-controller.graceful-fence.rpc-timeout.ms` to 1092752431
> 2. run `mvn surefire:test 
> -Dtest=org.apache.hadoop.ha.TestZKFailoverController#testGracefulFailoverFailBecomingStandby`
>  
> We create a PR that provides a fix by checking the timeout after 
> multiplication is at least 0.
>  



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