Tak-Lon (Stephen) Wu created HBASE-30257:
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Summary: Fix case-sensitive hostname check in region server after
HBASE-27333
Key: HBASE-30257
URL: https://issues.apache.org/jira/browse/HBASE-30257
Project: HBase
Issue Type: Bug
Affects Versions: 2.6.6, 3.0.0-beta-1, 4.0.0-alpha-1
Reporter: Tak-Lon (Stephen) Wu
HBASE-27333 introduced a hostname validation check on RegionServer startup.
This check is case-sensitive; if the Master reports the hostname in uppercase
but the RegionServer resolves it in lowercase, the RegionServer aborts with a
hostname mismatch error. This occurs even though DNS resolution is
case-insensitive by nature and both names refer to the same host
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