Ray Libraries

Ray Data

🎉 New Features:

• Added read_audio and read_video (#50016)

💫 Enhancements:

• Optimized multi-column groupbys (#45667)
• Included Ray user-agent in BigQuery client construction (#49922)

🔨 Fixes:

• Fixed bug that made read tasks non-deterministic (#49897)

🗑️ Deprecations:

• Deprecated num_rows_per_file in favor of min_rows_per_file (#49978)

Ray Train

💫 Enhancements:

• Add Train v2 user-facing callback interface (#49819)
• Add TuneReportCallback for propagating intermediate Train results to Tune (#49927)

Ray Tune

📖 Documentation:

• Fix BayesOptSearch docs (#49848)

Ray Serve

💫 Enhancements:

• Cache metrics in replica and report on an interval (#49971)
• Cache expensive calls to inspect.signature (#49975)
• Remove extra pickle serialization for gRPCRequest (#49943)
• Shared LongPollClient for Routers (#48807)
• DeploymentHandle API is now stable (#49840)

🔨 Fixes:

• Fix batched requests hanging after request cancellation bug (#50054)

RLlib

💫 Enhancements:

• Add metrics to replay buffers. (#49822)
• Enhance node-failure tolerance (new API stack). (#50007)
• MetricsLogger cleanup throughput logic. (#49981)
• Split AddStates... connectors into 2 connector pieces (AddTimeDimToBatchAndZeroPad and AddStatesFromEpisodesToBatch) (#49835)

🔨 Fixes:

• Old API stack IMPALA/APPO: Re-introduce mixin-replay-buffer pass, even if replay-ratio=0 (fixes a memory leak). (#49964)
• Fix MetricsLogger race conditions. (#49888)
• APPO/IMPALA: Bug fix for > 1 Learner actor. (#49849)

📖 Documentation:

• New MetricsLogger API rst page. (#49538)
• Move "new API stack" info box right below page titles for better visibility. (#49921)
• Add example script for how to log custom metrics in training_step(). (#49976)
• Enhance/redo autoregressive action distribution example. (#49967)
• Make the "tiny CNN" example RLModule run with APPO (by implementing TargetNetAPI) (#49825)

Ray Core and Ray Clusters

Ray Core

💫 Enhancements:

• Only get single node info rather then all when needed (#49727)
• Introduce with_tensor_transport API (#49753)

🔨 Fixes:

• Fix tqdm manager thread safe #50040

Ray Clusters

🔨 Fixes:

• Fix token expiration for ray autoscaler (#48481)

Thanks

Thank you to everyone who contributed to this release! 🥳
@wingkitlee0, @saihaj, @win5923, @justinvyu, @kevin85421, @edoakes, @cristianjd, @rynewang, @richardliaw, @LeoLiao123, @alexeykudinkin, @simonsays1980, @aslonnie, @ruisearch42, @pcmoritz, @fscnick, @bveeramani, @mattip, @till-m, @tswast, @ujjawal-khare, @wadhah101, @nikitavemuri, @akshay-anyscale, @srinathk10, @zcin, @dayshah, @dentiny, @LydiaXwQ, @matthewdeng, @JoshKarpel, @MortalHappiness, @sven1977, @omatthew98