From 7eebb312bf88951986928c5d309bef5964501295 Mon Sep 17 00:00:00 2001
From: Alex Lindsay <alexlindsay239@gmail.com>
Date: Thu, 2 Feb 2017 16:51:19 -0600
Subject: [PATCH] Fix dirac kernels thread and LineMaterialSamplerBase thread.
 (#8444).

---
 .../include/vectorpostprocessors/LineMaterialSamplerBase.h | 6 ++++++
 framework/src/base/ComputeDiracThread.C                    | 7 +++++++
 2 files changed, 13 insertions(+)

diff --git a/framework/include/vectorpostprocessors/LineMaterialSamplerBase.h b/framework/include/vectorpostprocessors/LineMaterialSamplerBase.h
index 2353e55ec390..508d0795f276 100644
--- a/framework/include/vectorpostprocessors/LineMaterialSamplerBase.h
+++ b/framework/include/vectorpostprocessors/LineMaterialSamplerBase.h
@@ -147,6 +147,11 @@ LineMaterialSamplerBase<T>::execute()
   const RealVectorValue line_unit_vec = line_vec / line_length;
   std::vector<Real> values(_material_properties.size());
 
+  std::set<unsigned int> needed_mat_props;
+  const std::set<unsigned int> & mp_deps = this->getMatPropDependencies();
+  needed_mat_props.insert(mp_deps.begin(), mp_deps.end());
+  _fe_problem.setActiveMaterialProperties(needed_mat_props, _tid);
+
   for (const auto & elem : intersected_elems)
   {
     if (elem->processor_id() != processor_id())
@@ -179,6 +184,7 @@ LineMaterialSamplerBase<T>::execute()
       addSample(_q_point[qp], qp_proj_dist_along_line, values);
     }
   }
+  _fe_problem.clearActiveMaterialProperties(_tid);
 }
 
 template <typename T>
diff --git a/framework/src/base/ComputeDiracThread.C b/framework/src/base/ComputeDiracThread.C
index 701f8cd19ab6..952c5d04c22a 100644
--- a/framework/src/base/ComputeDiracThread.C
+++ b/framework/src/base/ComputeDiracThread.C
@@ -60,7 +60,13 @@ ComputeDiracThread::subdomainChanged()
 {
   std::set<MooseVariable *> needed_moose_vars;
   _dirac_kernels.updateVariableDependency(needed_moose_vars, _tid);
+
+  // Update material dependencies
+  std::set<unsigned int> needed_mat_props;
+  _dirac_kernels.updateMatPropDependency(needed_mat_props, _tid);
+
   _fe_problem.setActiveElementalMooseVariables(needed_moose_vars, _tid);
+  _fe_problem.setActiveMaterialProperties(needed_mat_props, _tid);
 }
 
 
@@ -155,6 +161,7 @@ void
 ComputeDiracThread::post()
 {
   _fe_problem.clearActiveElementalMooseVariables(_tid);
+  _fe_problem.clearActiveMaterialProperties(_tid);
 }
 
 void