[EXPORTER] Error when grpc endpoint is empty (#2507) #9220

Job	Run time
Bazel noexcept	11m 35s
Bazel on MacOS	18m 50s
Bazel nortti	12m 9s
Bazel asan config	14m 30s
Bazel	12m 17s
Bazel with async export	12m 16s
Bazel tsan config	12m 41s
Bazel valgrind	14m 2s
Bazel with external abseil	12m 17s
Benchmark	8m 12s
CMake test (with abseil)	4m 33s
CMake clang 15 (maintainer mode, abiv2)	14m 8s
CMake clang 15 (maintainer mode, async)	13m 50s
CMake clang 15 (maintainer mode, sync)	13m 57s
CMake do not install test (with otlp-exporter)	14m 11s
CMake gcc 13 (maintainer mode, async)	7m 3s
CMake gcc 13 (maintainer mode, sync)	7m 0s
CMake install test (with abseil)	4m 43s
CMake test (with modern protobuf,grpc and abseil)	18m 43s
CMake msvc (maintainer mode)	8m 13s
CMake msvc (maintainer mode) with C++20	8m 56s
CMake test (with opentracing-shim)	4m 18s
CMake test (build shared libraries with otlp-exporter and static gRPC)	13m 25s
CMake test (with otlp-exporter)	14m 29s
CMake test (without otlp-exporter)	4m 37s
CMake C++14 test(GCC)	4m 19s
CMake C++17 test(GCC)	4m 39s
CMake C++20 test(Clang with libc++)	9m 51s
CMake C++20 test(GCC)	8m 45s
CMake C++23 test(Clang with libc++)	9m 54s
CMake C++23 test(GCC)	8m 43s
CMake test (without otlp-exporter and with async export)	4m 32s
Code coverage	11m 27s
Copyright	6s
DocFX check	57s
Format	12s
markdown-lint	5s
misspell	3s
Plugin -> CMake	56s
CMake -> exporter proto	12m 24s
Bazel Windows	20m 33s
Plugin -> CMake Windows	6m 29s
CMake (With async export) -> exporter proto	12m 40s
CMake -> exporter proto (Build as DLL)	26m 50s
	7h 4m 20s

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