mynameis180 opened a new pull request, #8081:
URL: https://github.com/apache/hadoop/pull/8081
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## Description of PR
This PR fixes HDFS-17834: HDFS NameNode Web UI generates invalid HTTP links
for DataNodes in IPv6 environment.
### Problem
The NameNode Web UI incorrectly handles IPv6 addresses in DataNode links:
1. Fails to encapsulate IPv6 addresses in square brackets `[]` as required
by RFC 2732
2. Incorrectly parses IPv6 addresses, mistaking parts of the address for
port numbers
3. Generates malformed, unclickable links that don't point to the DataNode's
web interface
### Solution
- Properly wrap IPv6 addresses in square brackets for URL construction
- Fix the address parsing logic to correctly separate IPv6 addresses from
port numbers
- Ensure generated links follow RFC 2732 standards for IPv6 literal
addresses in URLs
### Example
Before: `https://datanodeHostname:30` (invalid)
After: `https://[1172:30:0:0:0:0:8a34]:50010` (valid)
## How was this patch tested?
- [x] Added unit tests for IPv6 address formatting in URL generation
- [x] Tested with existing IPv4 addresses to ensure no regression
- [x] Manual testing with IPv6 DataNode configurations
- [x] Verified generated links are clickable and point to correct DataNode
web interfaces
## For code changes:
- [x] Does the title or this PR starts with the corresponding JIRA issue id?
- [x] Object storage: have the integration tests been executed and the
endpoint declared according to the connector-specific documentation?
- [x] If adding new dependencies to the code, are these dependencies
licensed in a way that is compatible for inclusion under ASF 2.0?
- [x] If applicable, have you updated the LICENSE, LICENSE-binary,
NOTICE-binary files?
**Note:** This PR only contains code changes and no new dependencies were
added.
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