CalvinKirs opened a new pull request, #44916:
URL: https://github.com/apache/doris/pull/44916
### Background
The current implementation uses the HadoopUGI method, which invokes the
ugiDoAs function for each operation to log in and execute actions based on the
configuration. However, this approach has the following issues:
- Lack of Auto-Renewal: If the Kerberos TGT (Ticket Granting Ticket)
expires, manual re-login is required as there is no support for automatic
ticket renewal.
- Redundant Login Overhead: Each operation requires reinitializing or
checking UserGroupInformation, potentially causing performance bottlenecks.
- Complex Management: The HadoopUGI design does not unify the lifecycle
management of UGI instances, leading to duplicated logic across the codebase.
### Objective
- Auto-Renewal: Automatically renew Kerberos credentials when the TGT is
expired or near expiry.
- UGI Caching: Maintain reusable UserGroupInformation instances during their
lifecycle to avoid repetitive logins.
- Unified Management: Simplify the management of UGI instances and Kerberos
credentials.
### Release note
None
### Check List (For Author)
- Test <!-- At least one of them must be included. -->
- [ ] Regression test
- [ ] Unit Test
- [ ] Manual test (add detailed scripts or steps below)
- [ ] No need to test or manual test. Explain why:
- [ ] This is a refactor/code format and no logic has been changed.
- [ ] Previous test can cover this change.
- [ ] No code files have been changed.
- [ ] Other reason <!-- Add your reason? -->
- Behavior changed:
- [ ] No.
- [ ] Yes. <!-- Explain the behavior change -->
- Does this need documentation?
- [ ] No.
- [ ] Yes. <!-- Add document PR link here. eg:
https://github.com/apache/doris-website/pull/1214 -->
### Check List (For Reviewer who merge this PR)
- [ ] Confirm the release note
- [ ] Confirm test cases
- [ ] Confirm document
- [ ] Add branch pick label <!-- Add branch pick label that this PR should
merge into -->
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