--- a/src/hotspot/share/gc/shenandoah/shenandoahRootProcessor.cpp	Tue Jan 29 10:13:23 2019 +0100
+++ b/src/hotspot/share/gc/shenandoah/shenandoahRootProcessor.cpp	Tue Jan 29 11:30:17 2019 +0100
@@ -78,7 +78,6 @@
   WeakProcessor::oops_do(oops);
   ObjectSynchronizer::oops_do(oops);
   SystemDictionary::oops_do(oops);
-  StringTable::oops_do(oops);
 
   if (ShenandoahStringDedup::is_enabled()) {
     ShenandoahStringDedup::oops_do_slow(oops);
@@ -209,13 +208,6 @@
       ObjectSynchronizer::oops_do(strong_roots);
     }
   }
-
-  // All threads execute the following. A specific chunk of buckets
-  // from the StringTable are the individual tasks.
-  if (weak_roots != NULL) {
-    ShenandoahWorkerTimingsTracker timer(worker_times, ShenandoahPhaseTimings::StringTableRoots, worker_id);
-    StringTable::possibly_parallel_oops_do(&_par_state_string, weak_roots);
-  }
 }
 
 uint ShenandoahRootProcessor::n_workers() const {