public void testPut() throws Exception {
assertNumberOfRows("metrics_metadata", 0);
MetadataCache cache = MetadataCache.createLoadingCacheInstance(new TimeValue(5, TimeUnit.MINUTES), 1);
cache.setIO(io);
Locator loc1 = Locator.createLocatorFromPathComponents("acOne", "ent", "chk", "mz", "met");
Locator loc2 = Locator.createLocatorFromPathComponents("acTwo", "ent", "chk", "mz", "met");
cache.put(loc1, "metaA", "some string");
cache.put(loc1, "metaB", "fooz");
cache.put(loc1, "metaC", "some other string");
if (io instanceof AstyanaxMetadataIO)