presto-raptor-legacy/src/main/java/io/prestosql/plugin/raptor/legacy/metadata/ShardCleaner.java/ShardCleaner/scheduleLocalCleanup
class ShardCleaner:    private void scheduleLocalCleanup()
    {
        Set<UUID> local = getLocalShards();
        scheduler.submit(() -> {
            waitJitterTime();
            runLocalCleanupImmediately(local);
        });

        scheduler.scheduleWithFixedDelay(() -> {
            waitJitterTime();
            runLocalCleanup();
        }, 0, localCleanerInterval.toMillis(), MILLISECONDS);
    }