Merge pull request #7619 from dgquintas/fix_grpclbtest

deflake grpclb_test

Makefile

@@ -3154,6 +3154,7 @@ LIBGRPC_TEST_UTIL_SRC = \
     src/core/lib/transport/metadata.c \
     src/core/lib/transport/metadata_batch.c \
     src/core/lib/transport/static_metadata.c \
+    src/core/lib/transport/timeout_encoding.c \
     src/core/lib/transport/transport.c \
     src/core/lib/transport/transport_op_string.c \
 

test/cpp/grpclb/grpclb_test.cc

@@ -676,11 +676,12 @@ int main(int argc, char **argv) {
   // If the LB server waits > 2000ms, the update arrives after the first two
   // request are done and the third pick is performed, which returns, in RR
   // fashion, the 1st server of the 1st update. Therefore, the second server of
-  // batch 1 is hit twice, whereas the first server of batch 2 is never hit.
-  tf_result = grpc::test_update(2100);
-  GPR_ASSERT(tf_result.lb_backends[0].num_calls_serviced == 2);
-  GPR_ASSERT(tf_result.lb_backends[1].num_calls_serviced == 1);
-  GPR_ASSERT(tf_result.lb_backends[2].num_calls_serviced == 1);
+  // batch 1 is hit at least one, whereas the first server of batch 2 is never
+  // hit.
+  tf_result = grpc::test_update(2500);
+  GPR_ASSERT(tf_result.lb_backends[0].num_calls_serviced >= 1);
+  GPR_ASSERT(tf_result.lb_backends[1].num_calls_serviced > 0);
+  GPR_ASSERT(tf_result.lb_backends[2].num_calls_serviced > 0);
   GPR_ASSERT(tf_result.lb_backends[3].num_calls_serviced == 0);
 
   grpc_shutdown();

vsprojects/vcxproj/grpc_test_util/grpc_test_util.vcxproj

@@ -266,6 +266,7 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\metadata.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\metadata_batch.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\static_metadata.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\timeout_encoding.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\transport.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\transport_impl.h" />
   </ItemGroup>
@@ -476,6 +477,8 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\transport\static_metadata.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\transport\timeout_encoding.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\transport\transport.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\transport\transport_op_string.c">

vsprojects/vcxproj/grpc_test_util/grpc_test_util.vcxproj.filters

@@ -310,6 +310,9 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\transport\static_metadata.c">
       <Filter>src\core\lib\transport</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\transport\timeout_encoding.c">
+      <Filter>src\core\lib\transport</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\transport\transport.c">
       <Filter>src\core\lib\transport</Filter>
     </ClCompile>
@@ -671,6 +674,9 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\static_metadata.h">
       <Filter>src\core\lib\transport</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\timeout_encoding.h">
+      <Filter>src\core\lib\transport</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\transport.h">
       <Filter>src\core\lib\transport</Filter>
     </ClInclude>