code: public void requestUserSnapshot(final StoredProcedureInvocation invocation, final Connection c) {
          m_es.submit(new Runnable() {
              @Override
              public void run() {
                  try {
                      submitUserSnapshotRequest(invocation, c);
                  } catch (Exception e) {
                      VoltDB.crashLocalVoltDB("Exception submitting user snapshot request", true, e);
                  }
              }
          });
      }
docs: /*
  If we are the leader, go ahead an create the procedure invocation to do the work.
  We aren't going to journal this in ZK. if the leader dies there will be no
  one to try and complete the work. C'est la vie.