milvus-io--milvus/tests/python_client/scale/README.md

Scale Tests

Goal

Scale tests are designed to check the scalability of Milvus.

For instance, if the dataNode pod expands from one to two:

• verify the consistency of existing data

• verify that the DDL and DML operation is working

Prerequisite

• Kubernetes Cluster
• Milvus Operator (refer to Milvus Operator)

Test Scenarios

Milvus in cluster mode

• scale dataNode replicas

• expand / shrink indexNode replicas

• scale queryNode replicas

• scale proxy replicas

How it works

• Milvus scales the number of pods in a deployment based on the milvus operator

• Scale test decouple the milvus deployment from the test code

• Each test scenario is carried out along the process:
  deploy milvus -> operate milvus -> scale milvus -> verify milvus

• Milvus deployment and milvus scaling are designed in ./customize/milvus_operator.py

Run

Manually

Run a single test scenario manually(take scale dataNode as instance):

• update update milvus image tag IMAGE_TAG in scale/constants.py

• run the commands below:

  cd /milvus/tests/python_client/scale  
  
  pytest test_data_node_scale.py::TestDataNodeScale::test_expand_data_node -v -s  

Nightly

still in planning