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https://issues.apache.org/jira/browse/IMPALA-9026?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Ho resolved IMPALA-9026.
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Fix Version/s: Impala 3.4.0
Resolution: Fixed
> Add an option to use resolved IP address for Statestore subscriber
> ------------------------------------------------------------------
>
> Key: IMPALA-9026
> URL: https://issues.apache.org/jira/browse/IMPALA-9026
> Project: IMPALA
> Issue Type: Improvement
> Components: Distributed Exec
> Affects Versions: Impala 3.4.0
> Reporter: Michael Ho
> Assignee: Michael Ho
> Priority: Minor
> Fix For: Impala 3.4.0
>
>
> Currently, statestore subscribers currently register with statestore using
> their hostnames. There may be certain deployment scenarios in which a pod may
> have an IP address but its DNS entry is not available for a valid reason
> (e.g. a Kubernetes pod whose readiness probe returns false). An example could
> be that there could be more than one instances of an Impala component (e.g.
> coordinator) but only one of them will be active at a time and the rest will
> serve as backup. In which case, we still want the backup coordinator to
> receive any updates from statestore but not serve any queries until the
> primary coordinator fails.
> To handle the case above, we may allow statestore subscribers to register
> with statestore using its IP address instead of hostname. This may not work
> with some existing secure deployment in which TLS is enabled between Impala
> hosts as there may be mismatch between the hostname used at Thrift layer and
> the certificate so this option is disabled by default.
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