4 files changed, 12 insertions, 1 deletions
diff --git a/src/core/lib/surface/call.c b/src/core/lib/surface/call.c
index f65d962fa8..fd3876eb7d 100644
--- a/src/core/lib/surface/call.c
+++ b/src/core/lib/surface/call.c
@@ -1109,6 +1109,9 @@ static void receiving_slice_ready(grpc_exec_ctx *exec_ctx, void *bctlp,
                          call->receiving_slice);
     continue_receiving_slices(exec_ctx, bctl);
   } else {
+    if (grpc_trace_operation_failures) {
+      GRPC_LOG_IF_ERROR("receiving_slice_ready", GRPC_ERROR_REF(error));
+    }
     grpc_byte_stream_destroy(exec_ctx, call->receiving_stream);
     call->receiving_stream = NULL;
     grpc_byte_buffer_destroy(*call->receiving_buffer);
diff --git a/src/core/lib/surface/completion_queue.c b/src/core/lib/surface/completion_queue.c
index ecc127876b..eaad614842 100644
--- a/src/core/lib/surface/completion_queue.c
+++ b/src/core/lib/surface/completion_queue.c
@@ -50,6 +50,8 @@
 #include "src/core/lib/surface/event_string.h"
 #include "src/core/lib/surface/surface_trace.h"
 
+int grpc_trace_operation_failures;
+
 typedef struct {
   grpc_pollset_worker **worker;
   void *tag;
@@ -231,12 +233,15 @@ void grpc_cq_end_op(grpc_exec_ctx *exec_ctx, grpc_completion_queue *cc,
 #endif
 
   GPR_TIMER_BEGIN("grpc_cq_end_op", 0);
-  if (grpc_api_trace) {
+  if (grpc_api_trace || (grpc_trace_operation_failures && error != GRPC_ERROR_NONE)) {
     const char *errmsg = grpc_error_string(error);
     GRPC_API_TRACE(
         "grpc_cq_end_op(exec_ctx=%p, cc=%p, tag=%p, error=%s, done=%p, "
         "done_arg=%p, storage=%p)",
         7, (exec_ctx, cc, tag, errmsg, done, done_arg, storage));
+    if (grpc_trace_operation_failures) {
+	    gpr_log(GPR_ERROR, "Operation failed: tag=%p, error=%s", tag, errmsg);   
+    } 
     grpc_error_free_string(errmsg);
   }
 
diff --git a/src/core/lib/surface/completion_queue.h b/src/core/lib/surface/completion_queue.h
index a866858cb5..b9dd1092b6 100644
--- a/src/core/lib/surface/completion_queue.h
+++ b/src/core/lib/surface/completion_queue.h
@@ -39,6 +39,8 @@
 #include <grpc/grpc.h>
 #include "src/core/lib/iomgr/pollset.h"
 
+extern int grpc_trace_operation_failures;
+
 typedef struct grpc_cq_completion {
   /** user supplied tag */
   void *tag;
diff --git a/src/core/lib/surface/init.c b/src/core/lib/surface/init.c
index 1c8b709015..f07039cb94 100644
--- a/src/core/lib/surface/init.c
+++ b/src/core/lib/surface/init.c
@@ -165,6 +165,7 @@ void grpc_init(void) {
                          &grpc_trace_channel_stack_builder);
     grpc_register_tracer("http1", &grpc_http1_trace);
     grpc_register_tracer("compression", &grpc_compression_trace);
+    grpc_register_tracer("op_failure", &grpc_trace_operation_failures);
     grpc_security_pre_init();
     grpc_iomgr_init();
     grpc_executor_init();