The v1.46.0 release <https://github.com/grpc/grpc-java/releases/tag/v1.46.0>
is now available.

Bug Fixes

   - netty: Fixed incompatibility with Netty 4.1.75.Final that caused
   COMPRESSION_ERROR (#9004 <https://github.com/grpc/grpc-java/pull/9004>)
   - xds: Fix LBs blindly propagating control plane errors (#9012
   <https://github.com/grpc/grpc-java/pull/9012>). This change forces the
   use of UNAVAILABLE for any xDS communication failures, which otherwise
   could greatly confuse an application. This is essentially a continuation of
   the fix in 1.45.0 for XdsNameResolver, but for other similar cases
   - xds: Fix ring_hash reconnecting behavior. Previously a
   TRANSIENT_FAILURE subchannel would remain failed forever
   - xds: Fix ring_hash defeating priority’s failover connection timeout.
   grpc/proposal#296 <https://github.com/grpc/proposal/pull/296>
   - binder: Work around an Android Intent bug for consistent
   AndroidComponentAndress hashCode() and equals() (#9061
   <https://github.com/grpc/grpc-java/pull/9061>)
   - binder: Fix deadlock when using process-local Binder (#8987
   <https://github.com/grpc/grpc-java/pull/8987>). Process-local binder has
   a different threading model than normal FLAG_ONEWAY, so this case is now
   detected and the FLAG_ONEWAY threading model is emulated
   - okhttp: Removed dead code in io.grpc.okhttp.internal.Util. This should
   have no impact except for static code analysis. This code was never used
   and was from the process of forking okhttp. It calculated things like MD5
   which can trigger security scanners (#9071
   <https://github.com/grpc/grpc-java/pull/9071>)

Behavior Changes

   - java_grpc_library.bzl: Pass use_default_shell_env = True for protoc (
   #8984 <https://github.com/grpc/grpc-java/pull/8984>). This allows using
   MinGW on Windows
   - xds: Unconditionally apply backoff on ADS and LDS stream recreation.
   Previously if a message had been received on the stream no backoff wait
   would be performed. This limits QPS to a buggy server to 1 QPS, instead of
   a closed loop
   - xds: Skip Routes within VirtualHosts whose RouteAction has no
   cluster_specifier. This probably means the control plane is using a
   cluster_specifier field unknown/unsupported by gRPC. The control plane can
   repeat the Route with a different cluster_specifier for compatibility with
   older clients
   - xds: Support xds.config.resource-in-sotw client capability. Resources
   wrapped in a io.envoyproxy.envoy.service.discovery.v3.Resource message
   are now supported (#8997 <https://github.com/grpc/grpc-java/pull/8997>)

New Features

   - gcp-observability: A new experimental module for improving visibility
   into gRPC workloads. Initially supports logging RPCs to Google Cloud Logging
   - grpclb: Support setting initial fallback timeout by service config (
   #8980 <https://github.com/grpc/grpc-java/pull/8980>)

Dependencies

   - PerfMark bumped to 0.25.0 (#8948
   <https://github.com/grpc/grpc-java/pull/8948>)
   - okhttp: the okhttp dependency is now compile only (#8971
   <https://github.com/grpc/grpc-java/pull/8971>). Okhttp’s internal HTTP/2
   implementation was forked inside grpc-okhttp a long time ago, but there had
   been a few stray internal classes that had not been forked but should have
   been. That has now been fixed in preparation for OkHttp 3/4 support.
   Compile-only may cause a runtime failure for code using reflection on
   OkHttpChannelBuilder; add a dependency on okhttp 2.7.4 to resolve
   - bom: Removed protoc-gen-grpc-java from the BOM, as the classifier was
   confusing and it provided no value (#9020
   <https://github.com/grpc/grpc-java/pull/9020>)

Acknowledgements

@jesseschalken <https://github.com/jesseschalken>
@kluever <https://github.com/kluever>
@beatrausch <https://github.com/beatrausch>

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