MultiGrepReporterSink<String> snk = bld.load().iterator().next();
snk.open();
b.mark("filters_loaded", new File(HADOOP_GREP).getName());
TextFileSource txt = new TextFileSource(HADOOP_DATA[0]);
txt.open();
MemorySinkSource mem = new MemorySinkSource();
mem.open();
EventUtil.dumpAll(txt, mem);
b.mark("disk_loaded");