### What problem does this PR solve?
fix show variable display wrong enable_nereids_planner value, introduced
by #49913
### Release note
None
### Check List (For Author)
- Test <!-- At least one of them must be included. -->
- [x] 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:
- [x] No.
- [ ] Yes. <!-- Explain the behavior change -->
- Does this need documentation?
- [ ] No.
- [ ] Yes. <!-- Add document PR link here. eg:
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### What problem does this PR solve?
Problem Summary:
When fall back to old planner, the partition pruning of external table
will fail,
and NPE will be throw like:
```
2025-04-14 16:22:33,427 WARN (mysql-nio-pool-19697|237161) [HiveScanNode.getSplits():189] get file split failed for table: dwd_log_fact_channel_track_result_hi
java.lang.NullPointerException: null
at org.apache.doris.datasource.hive.source.HiveScanNode.getPartitions(HiveScanNode.java:137) ~[doris-fe.jar:1.2-SNAPSHOT]
at org.apache.doris.datasource.hive.source.HiveScanNode.getSplits(HiveScanNode.java:171) ~[doris-fe.jar:1.2-SNAPSHOT]
at org.apache.doris.datasource.FileQueryScanNode.createScanRangeLocations(FileQueryScanNode.java:366) ~[doris-fe.jar:1.2-SNAPSHOT]
at org.apache.doris.datasource.FileQueryScanNode.doFinalize(FileQueryScanNode.java:222) ~[doris-fe.jar:1.2-SNAPSHOT]
at org.apache.doris.datasource.FileQueryScanNode.finalize(FileQueryScanNode.java:208) ~[doris-fe.jar:1.2-SNAPSHOT]
at org.apache.doris.planner.PlanNode.finalize(PlanNode.java:722) ~[doris-fe.jar:1.2-SNAPSHOT]
at org.apache.doris.planner.JoinNodeBase.finalize(JoinNodeBase.java:456) ~[doris-fe.jar:1.2-SNAPSHOT]
at org.apache.doris.planner.PlanNode.finalize(PlanNode.java:722) ~[doris-fe.jar:1.2-SNAPSHOT]
at org.apache.doris.planner.JoinNodeBase.finalize(JoinNodeBase.java:456) ~[doris-fe.jar:1.2-SNAPSHOT]
at org.apache.doris.planner.PlanNode.finalize(PlanNode.java:722) ~[doris-fe.jar:1.2-SNAPSHOT]
at org.apache.doris.planner.AggregationNode.finalize(AggregationNode.java:402) ~[doris-fe.jar:1.2-SNAPSHOT]
at org.apache.doris.planner.PlanNode.finalize(PlanNode.java:722) ~[doris-fe.jar:1.2-SNAPSHOT]
at org.apache.doris.planner.SetOperationNode.finalize(SetOperationNode.java:158) ~[doris-fe.jar:1.2-SNAPSHOT]
at org.apache.doris.planner.PlanNode.finalize(PlanNode.java:722) ~[doris-fe.jar:1.2-SNAPSHOT]
```
This error msg is very confusing. So this PR return a more explicit
error msg.
### Release note
None
### What problem does this PR solve?
cherry-pick from master (#49381)
### 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:
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### What problem does this PR solve?
backport: https://github.com/apache/doris/pull/50308
Issue Number: close #xxx
Related PR: #xxx
Problem Summary:
### 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 -->
### What problem does this PR solve?
backport:https://github.com/apache/doris/pull/48537
Issue Number: close #xxx
Related PR: #xxx
Problem Summary:
### 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 -->
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### What problem does this PR solve?
- In version 2.1, the global permission check still calls the internal
permission interface. If grant is not allowed, it will be impossible to
assign admin and other permissions to users
- According to the current design of LDAP, if there is no user in LDAP,
Doris will check again to see if the user exists internally. If there
is, login will also be allowed. Therefore, creating users should not be
prohibited
### What problem does this PR solve?
pr: https://github.com/apache/doris/pull/39427
commitId: 9ffb060a
Issue Number: close #xxx
Related PR: #xxx
Problem Summary:
### 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 -->
