[Test] Add caching to flexible instance type retrieval to minimize the number of EC2 requests.#7402
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…e number of EC2 requests.
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…litate troubleshooting.
…number of calls to retrieve similar instance types.
…e similar instance types, so that it can reuse cached value and reduce calls to EC2.
…to reuse the regional cached value to reduce the EC2 calls
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…nd used it to cache flexible instance types.
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Description of changes
Add caching to flexible instance type retrieval to minimize the number of EC2 requests.
We adopted the same chaching approach to a similar call in #7401
Tests
ONGOING 2 parallel executions of
test_ebs_singlewill trigger just one request to retrieve the list of flexible instance types, while before this fix it used to trigger one.By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.