fix compiler warnings

pcmoritz · pcmoritz · commit 99537c94ebdb · 2017-06-11T14:01:39.000-07:00
diff --git a/ci/travis_before_script_cpp.sh b/ci/travis_before_script_cpp.sh
@@ -26,12 +26,11 @@ source $TRAVIS_BUILD_DIR/ci/travis_env_common.sh
 if [ $only_library_mode == "no" ]; then
   # C++ toolchain
   export CPP_TOOLCHAIN=$TRAVIS_BUILD_DIR/cpp-toolchain
-  export FLATBUFFERS_HOME=$CPP_TOOLCHAIN
   export RAPIDJSON_HOME=$CPP_TOOLCHAIN
 
   # Set up C++ toolchain from conda-forge packages for faster builds
   source $TRAVIS_BUILD_DIR/ci/travis_install_conda.sh
-  conda create -y -q -p $CPP_TOOLCHAIN python=2.7 flatbuffers rapidjson
+  conda create -y -q -p $CPP_TOOLCHAIN python=2.7 rapidjson
 fi
 
 if [ $TRAVIS_OS_NAME == "osx" ]; then
diff --git a/cpp/src/plasma/plasma_store.cc b/cpp/src/plasma/plasma_store.cc
@@ -248,8 +248,8 @@ void PlasmaStore::return_from_get(GetRequest *get_req) {
 void PlasmaStore::update_object_get_requests(ObjectID object_id) {
   std::vector<GetRequest *> &get_requests = object_get_requests_[object_id];
   size_t index = 0;
-  int num_requests = get_requests.size();
-  for (int i = 0; i < num_requests; ++i) {
+  size_t num_requests = get_requests.size();
+  for (size_t i = 0; i < num_requests; ++i) {
     GetRequest *get_req = get_requests[index];
     auto entry = get_object_table_entry(&store_info_, object_id);
     ARROW_CHECK(entry != NULL);
@@ -445,9 +445,9 @@ void PlasmaStore::send_notifications(int client_fd) {
     int64_t size = *((int64_t *) notification);
 
     // Attempt to send a notification about this object ID.
-    int nbytes = send(client_fd, notification, sizeof(int64_t) + size, 0);
+    ssize_t nbytes = send(client_fd, notification, sizeof(int64_t) + size, 0);
     if (nbytes >= 0) {
-      ARROW_CHECK(nbytes == static_cast<int64_t>(sizeof(int64_t)) + size);
+      ARROW_CHECK(nbytes == static_cast<ssize_t>(sizeof(int64_t)) + size);
     } else if (nbytes == -1 &&
                (errno == EAGAIN || errno == EWOULDBLOCK || errno == EINTR)) {
       ARROW_LOG(DEBUG)
