bigtable: v1.51.0

1.51.0 (2026-07-23)

Features

• bigtable: Add ChainInterceptors and RetryingVRpc for vRPC pipeline (#20185) (c7a832a)
• bigtable: Add ClientConfigurationManager (#19986) (3a8f927)
• bigtable: Add debug tag counter (recordDebugTag / assertDebugTag) (#20114) (3c97590)
• bigtable: Add lazyPool helper for on-demand session pool opening (#20182) (f6ae3fb)
• bigtable: Add PeakEwma continuous time-decay latency tracker (#20187) (9d124ef)
• bigtable: Add PoolSizer for server-driven session pool capacity (#20189) (57ebbeb)
• bigtable: Add session package with SessionClient + SessionTableAPI interfaces (#20180) (4b82fd2)
• bigtable: Add Session primitives (AttemptOutcome, vRPC ctx, msgtype) (#20116) (e1011e2)
• bigtable: Add Session state enum (#19981) (0748972)
• bigtable: Add SessionThrottler / AdaptiveSessionThrottler for OpenSession pacing (#20184) (02e3c6d)
• bigtable: Add SessionThrottler / AdaptiveSessionThrottler for OpenSession pacing (#20184) (29be83e)
• bigtable: Add sessionTracer for per-Session lifecycle + vRPC metrics (#20190) (a466345)
• bigtable: Enable new auth library and JWT for instance admin client (#20013) (21c4a44)
• bigtable: Modularize channel priming behind a ChannelPrimer interface (#20027) (5214ab7)
• bigtable: Modularize Direct Access compatibility check (#19987) (a25e93d)
• o11y: Regenerate clients for LRO tracing (#20107) (779074e)

Bug Fixes

• bigtable: Default cluster/zone in toOtelMetricAttrs to avoid Monitoring reject (#20178) (14493f4)
• bigtable: Eliminate stats-handler MD race in internal/metrics tracer (#20158) (c387066)