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51 lines
1.3 KiB
Markdown
51 lines
1.3 KiB
Markdown
# Scale Tests
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## Goal
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Scale tests are designed to check the scalability of Milvus.
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For instance, if the dataNode pod expands from one to two:
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- verify the consistency of existing data
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- verify that the DDL and DML operation is working
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## Prerequisite
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- Kubernetes Cluster
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- Milvus Operator (refer to [Milvus Operator](https://github.com/milvus-io/milvus-operator))
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## Test Scenarios
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### Milvus in cluster mode
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- scale dataNode replicas
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- expand / shrink indexNode replicas
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- scale queryNode replicas
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- scale proxy replicas
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## How it works
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- Milvus scales the number of pods in a deployment based on the milvus operator
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- Scale test decouple the milvus deployment from the test code
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- Each test scenario is carried out along the process:
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<br> deploy milvus -> operate milvus -> scale milvus -> verify milvus
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- Milvus deployment and milvus scaling are designed in `./customize/milvus_operator.py`
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## Run
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### Manually
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Run a single test scenario manually(take scale dataNode as instance):
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- update
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update milvus image tag `IMAGE_TAG` in `scale/constants.py`
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- run the commands below:
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```bash
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cd /milvus/tests/python_client/scale
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pytest test_data_node_scale.py::TestDataNodeScale::test_expand_data_node -v -s
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```
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### Nightly
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still in planning
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