IndexBuildDriverFactoryProvider indexBuildDriverFactoryProvider = new IndexBuildDriverFactoryProvider(
indexContext.getNextOperatorId(),
indexContext.isInputDriver(),
indexSource.getOperatorFactories());
IndexLookupSourceSupplier indexLookupSourceSupplier = new IndexLookupSourceSupplier(
indexChannels,
indexSource.getTypes(),
indexBuildDriverFactoryProvider,
maxIndexMemorySize,
indexJoinLookupStats);