Gabriel39 commented on PR #65851:
URL: https://github.com/apache/doris/pull/65851#issuecomment-5118663606

   Current-head review summary (`de3a2d51fc8`)
   
   The four issues from the previous review round have substantive fixes, but 
the current head is still not merge-ready. I verified the following unresolved 
findings against the latest code:
   
   1. **P1 — Bind filtered data manifests with the current schema.** The 
two-argument `ManifestFiles.read` overload can bind a current-name predicate 
against a historical manifest schema and fail after a rename: 
https://github.com/apache/doris/pull/65851#discussion_r3673466007
   2. **P1 — Preserve nullable collection masks during ORC normalization.** 
ARRAY/MAP recursion drops the parent skipped-row mask, so invalid hidden 
UUID/FIXED elements under a NULL collection can reject a semantically valid 
write: https://github.com/apache/doris/pull/65851#discussion_r3673466013
   3. **P1 — Fence writes to the pinned Iceberg table identity.** 
Schema/spec/order IDs do not distinguish a dropped and recreated table; the 
context must pin and validate the Iceberg table UUID at preflight and final 
commit replay: https://github.com/apache/doris/pull/65851#discussion_r3673466022
   4. **P1 — Reject optional branch fields that are required in the current 
schema.** A physically present NULL is not replaced by `initialDefault`, so 
every present optional-to-required mismatch must be rejected regardless of the 
default: https://github.com/apache/doris/pull/65851#discussion_r3673780883
   5. **P1 — Resolve the full name path for ID-less nested equality keys in 
V1.** The current V1 name fallback searches only top-level columns and can hash 
a default/NULL instead of the stored nested value, diverging from V2: 
https://github.com/apache/doris/pull/65851#discussion_r3673780890
   6. **P1 — Align equality preflight with manifest-cache dispatch.** The 
preflight can row-filter away a delete that the cached task path later 
attaches, leaving its field ID out of the schema carrier and compatibility 
fence: https://github.com/apache/doris/pull/65851#discussion_r3673780894
   7. **P2 — Avoid a synchronous duplicate manifest pass in batch mode.** With 
any retained equality delete, the FE preflight still reads matching delete and 
data manifests before asynchronous dispatch and the real planner reads them 
again: https://github.com/apache/doris/pull/65851#discussion_r3674888290
   
   There are also two hard integration gates:
   
   - GitHub currently reports `mergeable=false` and `mergeable_state=dirty`. 
The PR conflicts with the target branch in `IcebergMergeSink.java`, 
`LogicalIcebergMergeSink.java`, `PhysicalIcebergMergeSink.java`, and 
`PhysicalPlanTranslator.java`.
   - The current FE UT, BE UT, Cloud UT, Compile, and Performance TeamCity 
builds all finished with failure because the PR could not be merged with the 
target branch during setup. Those pipelines did not reach their actual 
compile/test workloads, so the latest head does not yet have valid merged-base 
Linux FE/BE/Cloud/compile coverage. Check status: 
https://github.com/apache/doris/pull/65851/checks
   
   Please resolve the six correctness/interoperability findings, address or 
measure the batch-planning regression, rebase and resolve the four conflicts, 
and rerun the full TeamCity set before the next merge-readiness review.


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