fix: Fix binlog import (#33027)

binlog import should only import into one partition.

issue: https://github.com/milvus-io/milvus/issues/32807

---------

Signed-off-by: bigsheeper <yihao.dai@zilliz.com>

internal/proxy/impl.go

@@ -6083,12 +6083,12 @@ func (node *Proxy) ImportV2(ctx context.Context, req *internalpb.ImportRequest)
 			return resp, nil
 		}
 		// Currently, Backup tool call import must with a partition name, each time restore a partition
-		partitions, err := globalMetaCache.GetPartitions(ctx, req.GetDbName(), req.GetCollectionName())
+		partitionID, err := globalMetaCache.GetPartitionID(ctx, req.GetDbName(), req.GetCollectionName(), req.GetPartitionName())
 		if err != nil {
 			resp.Status = merr.Status(err)
 			return resp, nil
 		}
-		partitionIDs = lo.Values(partitions)
+		partitionIDs = []UniqueID{partitionID}
 	} else {
 		if hasPartitionKey {
 			if req.GetPartitionName() != "" {

tests/restful_client_v2/testcases/test_jobs_operation.py

@@ -800,7 +800,7 @@ class TestCreateImportJob(TestBase):
 
         }
         if is_partition_key:
-            payload["partitionName"] = "partition_0"
+            payload["partitionName"] = "_default_0"
         rsp = self.import_job_client.create_import_jobs(payload)
         assert rsp['code'] == 200
         # list import job