Fixes

src/core/ext/transport/chttp2/transport/writing.cc

@@ -418,27 +418,27 @@ class StreamWriteContext {
     // https://github.com/grpc/proposal/blob/master/A6-client-retries.md#when-retries-are-valid
     if (!t_->is_client && s_->fetching_send_message == nullptr &&
         s_->flow_controlled_buffer.length == 0 &&
-        s_->send_trailing_metadata == nullptr &&
+        s_->compressed_data_buffer.length == 0 &&
+        s_->send_trailing_metadata != nullptr &&
         is_default_initial_metadata(s_->send_initial_metadata)) {
       ConvertInitialMetadataToTrailingMetadata();
-      return;  // early out
+    } else {
+      grpc_encode_header_options hopt = {
+          s_->id,  // stream_id
+          false,   // is_eof
+          t_->settings[GRPC_PEER_SETTINGS]
+                      [GRPC_CHTTP2_SETTINGS_GRPC_ALLOW_TRUE_BINARY_METADATA] !=
+              0,  // use_true_binary_metadata
+          t_->settings[GRPC_PEER_SETTINGS]
+                      [GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE],  // max_frame_size
+          &s_->stats.outgoing                                 // stats
+      };
+      grpc_chttp2_encode_header(exec_ctx, &t_->hpack_compressor, NULL, 0,
+                                s_->send_initial_metadata, &hopt, &t_->outbuf);
+      write_context_->ResetPingRecvClock();
+      write_context_->IncInitialMetadataWrites();
     }
 
-    grpc_encode_header_options hopt = {
-        s_->id,  // stream_id
-        false,   // is_eof
-        t_->settings[GRPC_PEER_SETTINGS]
-                    [GRPC_CHTTP2_SETTINGS_GRPC_ALLOW_TRUE_BINARY_METADATA] !=
-            0,  // use_true_binary_metadata
-        t_->settings[GRPC_PEER_SETTINGS]
-                    [GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE],  // max_frame_size
-        &s_->stats.outgoing                                 // stats
-    };
-    grpc_chttp2_encode_header(exec_ctx, &t_->hpack_compressor, NULL, 0,
-                              s_->send_initial_metadata, &hopt, &t_->outbuf);
-    stream_became_writable_ = true;
-    write_context_->ResetPingRecvClock();
-    write_context_->IncInitialMetadataWrites();
     s_->send_initial_metadata = NULL;
     s_->sent_initial_metadata = true;
     sent_initial_metadata_ = true;
@@ -532,6 +532,7 @@ class StreamWriteContext {
                                 s_->send_trailing_metadata, &hopt, &t_->outbuf);
     }
     write_context_->IncTrailingMetadataWrites();
+    write_context_->ResetPingRecvClock();
     SentLastFrame(exec_ctx);
 
     write_context_->NoteScheduledResults();

tools/run_tests/python_utils/jobset.py

@@ -412,7 +412,7 @@ class Jobset(object):
       if current_cpu_cost + spec.cpu_cost <= self._maxjobs:
         if len(self._running) < self._maxjobs_cpu_agnostic:
           break
-      self.reap()
+      self.reap(spec.shortname, spec.cpu_cost)
     if self.cancelled(): return False
     job = Job(spec,
               self._newline_on_success,
@@ -424,7 +424,7 @@ class Jobset(object):
       self.resultset[job.GetSpec().shortname] = []
     return True
 
-  def reap(self):
+  def reap(self, waiting_for=None, waiting_for_cost=None):
     """Collect the dead jobs."""
     while self._running:
       dead = set()
@@ -452,8 +452,12 @@ class Jobset(object):
           sofar = now - self._start_time
           remaining = sofar / self._completed * (self._remaining + len(self._running))
           rstr = 'ETA %.1f sec; %s' % (remaining, rstr)
-        message('WAITING', '%s%d jobs running, %d complete, %d failed' % (
-            rstr, len(self._running), self._completed, self._failures))
+        if waiting_for is not None:
+          wstr = ' next: %s @ %.2f cpu' % (waiting_for, waiting_for_cost)
+        else:
+          wstr = ''
+        message('WAITING', '%s%d jobs running, %d complete, %d failed (load %.2f)%s' % (
+            rstr, len(self._running), self._completed, self._failures, self.cpu_cost(), wstr))
       if platform_string() == 'windows':
         time.sleep(0.1)
       else: