Bug 213824 The data fetch setting in dataset(row limit number) isn't effect.
Steps To Reproduce: Please refer to issue #210606, the data fetch setting in dataset isn't effect. Thanks.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/executor/DataSetCacheManager.java
return  cacheMapManager.getCacheObject( DataSourceAndDataSet.newInstance( this.dataSourceDesign,
				this.dataSetDesign,
				this.parameterHints ) );
	}
	/**
	 * only for test
	 * 
	 * @return
	 */
	public boolean doesLoadFromCache( )
	{
		if ( needsToCache( dataSetDesign, cacheOption, alwaysCacheRowCount ) == false )
			return false;
		switchCacheMap( dataSetDesign );
		return cacheMapManager.doesLoadFromCache( DataSourceAndDataSet.newInstance( this.dataSourceDesign,
				this.dataSetDesign,
				this.parameterHints ) );
	}
	/**
	 * Notice, this method is only for test, it can not be called unless its use
	 * is for test.
	 */
	public void resetForTest( )
	{
		dataSourceDesign = null;
		dataSetDesign = null;
		cacheOption = DataEngineContext.CACHE_USE_DEFAULT;
		alwaysCacheRowCount = 0;
		if ( this.cacheMapManager != null )
		{