Gabriel39 commented on code in PR #66348:
URL: https://github.com/apache/doris/pull/66348#discussion_r3712697955


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fe/fe-filesystem/fe-filesystem-azure/src/main/java/org/apache/doris/filesystem/azure/AzureObjStorage.java:
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@@ -244,15 +276,37 @@ public void completeMultipartUpload(String remotePath, 
String uploadId,
             List<UploadPartResult> parts) throws IOException {
         try {
             AzureUri uri = AzureUri.parse(remotePath);
-            BlockBlobClient blockBlobClient = 
getClient().getBlobContainerClient(uri.container())
-                    .getBlobClient(uri.key()).getBlockBlobClient();
+            BlobContainerClient containerClient = 
getClient().getBlobContainerClient(uri.container());
             List<String> blockIds = new ArrayList<>();
             List<UploadPartResult> sorted = new ArrayList<>(parts);
             sorted.sort((a, b) -> Integer.compare(a.partNumber(), 
b.partNumber()));
+            boolean exactBlockIds = !sorted.isEmpty() && sorted.stream()
+                    .allMatch(part -> part.etag() != null && 
!part.etag().isEmpty());
             for (UploadPartResult part : sorted) {
-                blockIds.add(toBlockId(part.partNumber()));
+                // Missing IDs identify an older BE upload, whose blocks use 
the legacy namespace.

Review Comment:
   Addressed by the current branch. BE calls 
hive_multipart_protocol_supported() before opening the Hive writer and rejects 
Azure file production when the coordinator has not advertised deferred-Azure 
support. FE also validates exactly one complete pending-upload record per 
reported object-store file before publishing metadata. The tests cover a real 
base-BE-shaped update with no pending list, preservation of pending tokens 
during mixed-update merging, and Azure publication/lease behavior; the Azure 
extension suite passed 26/26.



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