[Recoverable] Allow certain tasks to gracefully reconnect without cra…

…shing the entire cluster during transient errors (i.e. preemption).

PiperOrigin-RevId: 696927974

xla/tsl/distributed_runtime/coordination/BUILD

@@ -152,6 +152,7 @@ tsl_gpu_library(
         "@com_google_absl//absl/base:core_headers",
         "@com_google_absl//absl/container:flat_hash_map",
         "@com_google_absl//absl/container:flat_hash_set",
+        "@com_google_absl//absl/flags:flag",
         "@com_google_absl//absl/functional:bind_front",
         "@com_google_absl//absl/log",
         "@com_google_absl//absl/log:check",
@@ -247,6 +248,7 @@ tsl_cc_test(
     name = "client_server_test",
     size = "medium",
     srcs = ["client_server_test.cc"],
+    shard_count = 4,
     deps = [
         "//xla/tsl/distributed_runtime/coordination:coordination_client",
         "//xla/tsl/distributed_runtime/coordination:coordination_service",
@@ -261,6 +263,7 @@ tsl_cc_test(
         "//xla/tsl/protobuf:distributed_runtime_payloads_proto_cc_impl",
         "@com_google_absl//absl/log",
         "@com_google_absl//absl/status",
+        "@com_google_absl//absl/status:statusor",
         "@com_google_absl//absl/strings",
         "@com_google_absl//absl/synchronization",
         "@com_google_absl//absl/time",