message: Set aggregator ratio to 1 for the append test because of the existing bug in
diff: @@ -171,6 +171,7 @@ TEST_F(BPWriteAppendReadTestADIOS2, ADIOS2BPWriteAppendRead2D2x4)
  io.SetEngine("BP4");
  }
  io.AddTransport("file");
  + io.SetParameter("AggregatorRatio", "1");
  adios2::Engine bpWriter = io.Open(fname, adios2::Mode::Write);
  @@ -322,6 +323,7 @@ TEST_F(BPWriteAppendReadTestADIOS2, ADIOS2BPWriteAppendRead2D2x4)
  io.SetEngine("BP4");
  }
  io.AddTransport("file");
  + io.SetParameter("AggregatorRatio", "1");
  adios2::Engine bpAppender = io.Open(fname, adios2::Mode::Append);
  