}
ExecutionBlockId ebId = QueryIdFactory.newExecutionBlockId(
QueryIdFactory.newQueryId(System.currentTimeMillis(), 0));
TupleCacheKey cacheKey = new TupleCacheKey(ebId.toString(), "TestTable");
TupleCache tupleCache = TupleCache.getInstance();
assertFalse(tupleCache.isBroadcastCacheReady(cacheKey));
assertTrue(tupleCache.lockBroadcastScan(cacheKey));
assertFalse(tupleCache.lockBroadcastScan(cacheKey));