daidai 0eb5131db6 [fix](iceberg) Honor standard row-level isolation properties (#69702) ...

### What problem does this PR solve?

Issue Number: N/A

Related PR: #69551

Problem Summary:
Doris Iceberg DELETE, UPDATE, and MERGE all used the non-standard
`delete_isolation_level` property. As a result, the standard
per-operation table properties `write.delete.isolation-level`,
`write.update.isolation-level`, and `write.merge.isolation-level` were
ignored. A table configured for `snapshot` isolation therefore still
performed serializable data-file conflict validation and rejected normal
concurrent appends.

This change selects the Iceberg `TableProperties` key based on
`WriteOperation` and parses it with `IsolationLevel.fromName()`. The
existing delete-file, base-snapshot, conflict-filter, and
referenced-data-file validations remain enabled; only
`validateNoConflictingDataFiles` is gated on serializable isolation.
Invalid isolation-level values now fail explicitly instead of being
treated as snapshot isolation.

The three disabled regressions from #69551 are enabled. Unit coverage
also verifies per-operation key selection, serializable defaults, and
invalid values.

### Release note

Iceberg DELETE, UPDATE, and MERGE now honor their standard per-operation
isolation-level table properties.

### Check List (For Author)

- Test
    - [ ] Regression test
- [x] Unit Test: `IcebergConnectorTransactionTest` and
`IcebergWriteKnownBugsTest` pass, including all three concurrent-append
snapshot-isolation regressions.
    - [ ] 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

- Behavior changed:
    - [ ] No.
- [x] Yes. Snapshot isolation now permits concurrent data-file appends
while retaining the other row-delta validations.

- Does this need documentation?
    - [x] No.
    - [ ] Yes.

### Check List (For Reviewer who merge this PR)

- [ ] Confirm the release note
- [ ] Confirm test cases
- [ ] Confirm document
- [ ] Add branch pick label

2026-11-04 15:20:10 +08:00

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src

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AGENTS.md

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pom.xml

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