enhance: Set maxPartitionNum default value to 1024 (#33949)

See also #30059

---------

Signed-off-by: Congqi Xia <congqi.xia@zilliz.com>

configs/milvus.yaml

@@ -185,7 +185,7 @@ natsmq:
 # Related configuration of rootCoord, used to handle data definition language (DDL) and data control language (DCL) requests
 rootCoord:
   dmlChannelNum: 16 # The number of dml channels created at system startup
-  maxPartitionNum: 4096 # Maximum number of partitions in a collection
+  maxPartitionNum: 1024 # Maximum number of partitions in a collection
   minSegmentSizeToEnableIndex: 1024 # It's a threshold. When the segment size is less than this value, the segment will not be indexed
   enableActiveStandby: false
   maxDatabaseNum: 64 # Maximum number of database

pkg/util/paramtable/component_param.go

@@ -988,7 +988,7 @@ func (p *rootCoordConfig) init(base *BaseTable) {
 	p.MaxPartitionNum = ParamItem{
 		Key:          "rootCoord.maxPartitionNum",
 		Version:      "2.0.0",
-		DefaultValue: "4096",
+		DefaultValue: "1024",
 		Doc:          "Maximum number of partitions in a collection",
 		Export:       true,
 	}

tests/python_client/common/common_type.py

@@ -15,7 +15,7 @@ default_limit = 10
 default_batch_size = 1000
 max_limit = 16384
 max_top_k = 16384
-max_partition_num = 4096
+max_partition_num = 1024
 max_role_num = 10
 default_partition_num = 16   # default num_partitions for partition key feature
 default_segment_row_limit = 1000

tests/python_client/testcases/test_partition.py

@@ -663,12 +663,12 @@ class TestPartitionOperations(TestcaseBase):
             t.join()
         p_name = cf.gen_unique_str()
         log.info(f"partitions: {len(collection_w.partitions)}")
+        err_msg = f"partition number ({ct.max_partition_num}) exceeds max configuration ({ct.max_partition_num})"
         self.partition_wrap.init_partition(
             collection_w.collection, p_name,
             check_task=CheckTasks.err_res,
-            check_items={ct.err_code: 65535,
-                         ct.err_msg: "partition number (4096) exceeds max configuration (4096), "
-                                     "collection: {}".format(collection_w.name)})
+            check_items={ct.err_code: 999,
+                         ct.err_msg: err_msg})
 
         # TODO: Try to verify load collection with a large number of partitions. #11651
 

tests/python_client/testcases/test_partition_key.py

@@ -203,7 +203,7 @@ class TestPartitionKeyInvalidParams(TestcaseBase):
         4. create a collection with max partitions + 1
         5. verify the error raised
         """
-        max_partition = 4096
+        max_partition = ct.max_partition_num
         self._connect()
         pk_field = cf.gen_int64_field(name='pk', is_primary=True)
         int64_field = cf.gen_int64_field()