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[tune] better error when metric or mode unset in search algorithms #11646

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merged 3 commits into from
Oct 28, 2020

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krfricke
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Why are these changes needed?

Print meaningful error message when metric or mode parameter has not been set.

Related issue number

Closes #11626

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  • I've run scripts/format.sh to lint the changes in this PR.
  • I've included any doc changes needed for https://docs.ray.io/en/master/.
  • I've made sure the tests are passing. Note that there might be a few flaky tests, see the recent failures at https://flakey-tests.ray.io/
  • Testing Strategy
    • Unit tests
    • Release tests
    • This PR is not tested :(

@richardliaw
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@amogkam can you take a look at this PR?

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@amogkam amogkam left a comment

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Looks great overall! Just left one comment. What do you think about splitting UNDEFINED_METRIC_MODE into two errors- one for metric and one for mode?

python/ray/tune/suggest/suggestion.py Show resolved Hide resolved
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@amogkam amogkam left a comment

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LGTM

Comment on lines +243 to +246
searcher1 = BayesOptSearch(
space=converted_config, metric="none", mode="max")
searcher2 = BayesOptSearch(
space=bayesopt_config, metric="none", mode="max")
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tests look fine, though in the future, we will want to explicitly test that the expected error is raised :)

@richardliaw richardliaw merged commit ba63ded into ray-project:master Oct 28, 2020
@krfricke krfricke deleted the tune-hpo-error branch September 22, 2023 22:44
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[tune] Improve error message without "mode"
3 participants