initial commit
diff --git a/build.yaml b/build.yaml
index 7b60612..3267b75 100644
--- a/build.yaml
+++ b/build.yaml
@@ -27,6 +27,7 @@
   - src/core/ext/census/gen/census.pb.h
   - src/core/ext/census/gen/trace_context.pb.h
   - src/core/ext/census/grpc_filter.h
+  - src/core/ext/census/intrusive_hash_map.h
   - src/core/ext/census/mlog.h
   - src/core/ext/census/resource.h
   - src/core/ext/census/rpc_metric_id.h
@@ -45,6 +46,7 @@
   - src/core/ext/census/grpc_filter.c
   - src/core/ext/census/grpc_plugin.c
   - src/core/ext/census/initialize.c
+  - src/core/ext/census/intrusive_hash_map.c
   - src/core/ext/census/mlog.c
   - src/core/ext/census/operation.c
   - src/core/ext/census/placeholders.c
@@ -1632,6 +1634,16 @@
   - grpc
   - gpr_test_util
   - gpr
+- name: census_intrusive_hash_map_test
+  build: test
+  language: c
+  src:
+  - test/core/census/intrusive_hash_map_test.c
+  deps:
+  - grpc_test_util
+  - grpc
+  - gpr_test_util
+  - gpr
 - name: census_resource_test
   build: test
   language: c