2026.6.0

What's Changed

• Remove fsspec exclusion following prefix fix by @martindurant in #837
• Add multi-threaded fixed-duration read microbenchmarks by @zhixiangli in #838
• Pass trailing / to createFolder as per documentation by @Mahalaxmibejugam in #839
• Adds Pipe function in microbenchmark by @ankitaluthra1 in #842
• feat: Allow running E2E tests against fsspec HEAD by @Mahalaxmibejugam in #841
• Improve test speed and emulator compatibility by @Yonghui-Lee in #843
• Run tests concurrently in CI by @Yonghui-Lee in #845
• Fix Storage Control endpoint resolution for TPC by @Mahalaxmibejugam in #847
• Use pytest markers to gate Rapid/HNS tests by @ankitaluthra1 in #848
• Add mrd pool cache by @Yonghui-Lee in #846
• Document intentional non-caching and fallback behavior for UNKNOWN bucket layouts by @Yonghui-Lee in #844
• Fix BigQuery ingestion errors and improve Cloud Build robustness by @Mahalaxmibejugam in #849
• Update default value of mrd_pool_size in micro benchmark to None and add pool parameters to benchmark schema by @Yonghui-Lee in #850
• Optimize benchmarks pipeline, fix quota leaks and handle manual builds by @Mahalaxmibejugam in #851
• Fix swapped arguments in _process_object inside inventory_report.py by @zhixiangli in #853
• Fix off-by-one error in upload_chunk shortfall recursion by @zhixiangli in #855
• Fix concurrent MRD reuse by tracking in-flight MRDs on close by @zhixiangli in #854
• Fix teardown order in close_resources() by @zhixiangli in #857
• Refcount in-flight MRDs in MRDPool by @zhixiangli in #856
• Refactor prefetcher code by @googlyrahman in #818
• Update read performance microbenchmark config to use 1 file by @zhixiangli in #861
• Add open microbenchmark by @yuxin00j in #860
• Fix multiprocessing emulator _get_bucket_type calls by @yuxin00j in #859
• Route rm paths independently per bucket to support mixed HNS/flat deletions by @zhixiangli in #858
• Implement zero-copy optimization for single-read operations by @googlyrahman in #840
• Adds log for download range for Rapid Bucket by @ankitaluthra1 in #863
• fix: clean up duplicate tests by @Mahalaxmibejugam in #867
• Fix ReadTheDocs builds by switching conda environment to conda-forge by @yuxin00j in #865
• ci: block release pipeline on Google Cloud Build E2E integration tests by @Mahalaxmibejugam in #866
• Enable experimental flags for zonal bucket in microbenchmarks by @googlyrahman in #868
• Refactor: Create flat bucket dynamically in tests by @zhixiangli in #869
• Add comprehensive performance micro-benchmark suite for fs.glob() by @yuxin00j in #873
• Fix multiple _info() calls in _process_limits_to_offset_and_length by @zhixiangli in #878
• Fix: Route GCSMap through dynamically resolved GCSFileSystem by @zhixiangli in #879
• Fix generation parameter not forwarded to GCSFile in open() by @zhixiangli in #880
• Fix ResourceMonitor thread shutdown latency affecting benchmark durations by @zhixiangli in #881
• Fix ZonalFile generation parameter overwriting by @zhixiangli in #882
• perf: cache metadata details from MRDPoolCache info lookup to avoid redundant network calls by @yuxin00j in #874
• Remove mrd_supports_multi_request feature flag by @zhixiangli in #884
• test: clean up zonal/HNS test markers and GHA exports by @Mahalaxmibejugam in #876
• Update Codecov config by @zhixiangli in #890
• Fix multi-process benchmark child process crash handling by @zhixiangli in #883
• Perf: Fix CPU and Memory aggregation logic in ResourceMonitor by @yuxin00j in #891
• Fix streaming upload alignment for non-final chunks by @zhixiangli in #894
• Optimize _rm batchsize and speed up tests by @zhixiangli in #893
• Refactor directory cache updates and optimize caching logic by @zhixiangli in #870
• Optimize E2E tests: parallelize resource creation and enable parallel test execution by @zhixiangli in #892
• Introduce async API in Prefetcher and Integrate it with Disk Reads by @googlyrahman in #877
• Add mixed pattern in gcsfs microbenchmarks by @googlyrahman in #822
• Check finalized state to optimize MRD pool initialization by @Yonghui-Lee in #896
• Update changelog for 2026.5.0 release by @zhixiangli in #898
• Update changelog for 2026.6.0 release by @zhixiangli in #899

Full Changelog: 2026.5.0...2026.6.0