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Incompatible types when running mypy hook

code-fixChange that does not change the behavior, such as code refactoring.Change that does not change the behavior, such as code refactoring.

Status: Open.

#6142 In optuna/optuna;

· Ajay-Satish-01 opened on Jun 8, 2025

Use <code>return a, b</code> instead of <code>return (a, b)</code>

code-fixChange that does not change the behavior, such as code refactoring.Change that does not change the behavior, such as code refactoring.

contribution-welcomeIssue that welcomes contribution.Issue that welcomes contribution.

good first issueGood first issue for contribution.Good first issue for contribution.

Status: Open.

#6136 In optuna/optuna;

· nabenabe0928 opened on Jun 7, 2025

GPSampler crashes when torch default device is cuda

bugIssue/PR about behavior that is broken. Not for typos/examples/CI/test but for Optuna itself.Issue/PR about behavior that is broken. Not for typos/examples/CI/test but for Optuna itself.

Status: Open.

#6113 In optuna/optuna;

· argusdusty opened on May 31, 2025

<code>operator does not exist: trialvaluetype = character varying</code> in CASE statement on PostgreSQL 17.3 with Optuna 4.3.0

bugIssue/PR about behavior that is broken. Not for typos/examples/CI/test but for Optuna itself.Issue/PR about behavior that is broken. Not for typos/examples/CI/test but for Optuna itself.

Status: Open.

#6096 In optuna/optuna;

· vcovo opened on May 27, 2025

The test <code>test_parallel_optimize_with_sleep</code> eventually fails

bugIssue/PR about behavior that is broken. Not for typos/examples/CI/test but for Optuna itself.Issue/PR about behavior that is broken. Not for typos/examples/CI/test but for Optuna itself.

Status: Open.

#6095 In optuna/optuna;

· HideakiImamura opened on May 27, 2025

Feature Request: Add Dark Mode Toggle to Documentation

featureChange that does not break compatibility, but affects the public interfaces.Change that does not break compatibility, but affects the public interfaces.

Status: Open.

#6093 In optuna/optuna;

· Ashish-Pandey62 opened on May 26, 2025

Support Multi-Node DDP with Lightning

featureChange that does not break compatibility, but affects the public interfaces.Change that does not break compatibility, but affects the public interfaces.

Status: Open.

#6091 In optuna/optuna;

· LarsKue opened on May 25, 2025

RetryFailedTrialCallback not working?

bugIssue/PR about behavior that is broken. Not for typos/examples/CI/test but for Optuna itself.Issue/PR about behavior that is broken. Not for typos/examples/CI/test but for Optuna itself.

Status: Open.

#6085 In optuna/optuna;

· Sebastian-0 opened on May 22, 2025

<code>JournalStorage</code> fails frequently in distributed optimization setups in combination with <code>GrpcProxyStorage</code>

bugIssue/PR about behavior that is broken. Not for typos/examples/CI/test but for Optuna itself.Issue/PR about behavior that is broken. Not for typos/examples/CI/test but for Optuna itself.

needs-discussionIssue/PR which needs discussion.Issue/PR which needs discussion.

Status: Open.

#6084 In optuna/optuna;

· nabenabe0928 opened on May 20, 2025

Optuna studies spontaneously stop accepting new trials when multiprocessing

bugIssue/PR about behavior that is broken. Not for typos/examples/CI/test but for Optuna itself.Issue/PR about behavior that is broken. Not for typos/examples/CI/test but for Optuna itself.

Status: Open.

#6083 In optuna/optuna;

· ConPalos opened on May 16, 2025

Describe how to use Optuna with Spark using ask-and-tell functionality

documentDocumentation related.Documentation related.

Status: Open.

#6077 In optuna/optuna;

· fritshermans opened on May 7, 2025

<code>Optuna</code> fails when storing DB

bugIssue/PR about behavior that is broken. Not for typos/examples/CI/test but for Optuna itself.Issue/PR about behavior that is broken. Not for typos/examples/CI/test but for Optuna itself.

Status: Open.

#6072 In optuna/optuna;

· ek-ex opened on May 6, 2025