ConfX created HADOOP-18905:
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Summary: 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
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`
This PR provides a fix by checking the timeout after multiplication is at least
0.
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