public static ConfigurableResource parseResourceConfigValue(String value)
      throws AllocationConfigurationException {
    return parseResourceConfigValue(value, Long.MAX_VALUE);
  }
@Test
  public void testAbsoluteVcoresNegativeFractional() throws Exception {
    expectNegativeValueOfResource("vcores");
    parseResourceConfigValue("  5120.3 mb, -2.35 vcores  ");
  }