Steve Vaughan 1120cc8485
HDFS-4043. Namenode Kerberos Login does not use proper hostname for host qualified hdfs principal name (#4785)
Use the existing DomainNameResolver to leverage the pluggable resolution framework.  This provides a means to perform a reverse lookup if needed.

Update default implementation of DNSDomainNameResolver to protect against returning the IP address as a string from a cached value.

Co-authored-by: Steve Vaughan Jr <s_vaughan@apple.com>
2022-08-23 05:34:33 +08:00

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