Why does using TTL not work?

[LiJie20190102]

Here is my code. After a long period of time, I can still query the data. Is there a problem with my code?

`

public void testTTL() {
    JanusGraph graph = ConfiguredGraphFactory.open(GRAPH_NAME);
    JanusGraphManagement mgmt = graph.openManagement();

    PropertyKey sensor = mgmt.makePropertyKey("sensor").cardinality(Cardinality.SINGLE).dataType(Double.class).make();
    mgmt.setTTL(sensor, Duration.ofSeconds(50));


    PropertyKey sensor2 = mgmt.makePropertyKey("sensor2").cardinality(Cardinality.SINGLE).dataType(Double.class).make();
    mgmt.setTTL(sensor2, Duration.ofSeconds(100));


    // vertex ttl , only support static vertex
    VertexLabel static_tweet = mgmt.makeVertexLabel("static_tweet").setStatic().make();
    mgmt.addProperties(static_tweet, sensor, sensor2);
    mgmt.setTTL(static_tweet, Duration.ofSeconds(100));

    VertexLabel tweet = mgmt.makeVertexLabel("tweet").setStatic().make();
    mgmt.addProperties(tweet, sensor, sensor2);

    // edge ttl
    EdgeLabel visits = mgmt.makeEdgeLabel("visits").make();
    mgmt.addProperties(visits, sensor, sensor2);
    mgmt.addConnection(visits, static_tweet, tweet);
    mgmt.setTTL(visits, Duration.ofSeconds(100));



    // index
    mgmt.buildIndex("static_tweet", Vertex.class).addKey(sensor).addKey(sensor2).indexOnly(static_tweet).buildMixedIndex(GRAPH_NAME);
    mgmt.buildIndex("tweet", Vertex.class).addKey(sensor).addKey(sensor2).indexOnly(tweet).buildMixedIndex(GRAPH_NAME);
    mgmt.buildIndex("visits", Edge.class).addKey(sensor).addKey(sensor2).indexOnly(visits).buildMixedIndex(GRAPH_NAME);
    mgmt.commit();
}


public void testAddTTLData() {
    JanusGraph graph = ConfiguredGraphFactory.open(GRAPH_NAME);
    JanusGraphTransaction tx = graph.buildTransaction().checkInternalVertexExistence(false).start();
    // static不能设定顶点id
    JanusGraphVertex staticTweet = tx.addVertex(T.label, "static_tweet", "sensor", 1.5, "sensor2", 2.5);
    JanusGraphVertex tweet = tx.addVertex(T.label, "tweet", "sensor", 1.6, "sensor2", 2.7);

    JanusGraphEdge visits = staticTweet.addEdge("visits", tweet);
    visits.property("sensor", 3.3);
    visits.property("sensor2", 3.4);

    tx.commit();
}


public void getTTLData() {
    JanusGraph open = ConfiguredGraphFactory.open(GRAPH_NAME);
    JanusGraphTransaction tx1 = open.newTransaction();

    Iterator<Vertex> iterator = tx1.vertices();
    while (iterator.hasNext()) {
        Vertex next = iterator.next();
        VertexProperty<Object> sensor = next.property("sensor");
        String key = sensor.key();
        Object value = sensor.value();
        System.out.println(next.id() + "===1===" + key + "===" + value);
        VertexProperty<Object> sensor2 = next.property("sensor2");
        String key2 = sensor2.key();
        Object value2 = sensor2.value();
        System.out.println(next.id() + "===2===" + key2 + "===" + value2);


    }


    Iterator<Edge> edgeIterator = tx1.edges();
    //    Iterator<Edge> edgeIterator = tx1.edges();
    Map<String, Object> hashMap = new HashMap<>();
    if (edgeIterator.hasNext()) {
        System.out.println("====1");
        Edge next = edgeIterator.next();
        next.properties()
            .forEachRemaining(
                x -> {
                    String key = x.key();
                    Object value = x.value();
                    hashMap.put(key, value);
                });
    }
    System.out.println(hashMap);
}

`

[li-boxuan]

What storage backend are you using?

[li-boxuan]

100 seconds as TTL is too small and generally an anti-pattern in HBase/Cassandra. But yeah it should still work... what if you only add vertex without edge attached?

[LiJie20190102]

Now there are only vertex points and no edges in the graph, but the vertices will not expire

[LiJie20190102]

I previously set it to 5 minutes, but it still doesn't work

[li-boxuan]

I just ran testVertexTTLWithCompositeIndex test with a local HBase container. The test worked fine. Would you be able to rewrite your experiment in a single test format?

[LiJie20190102]

Still not deleted. Is it because we modified the code that caused the problem? My version is 1.0.0

[li-boxuan]

What code did you modify?

[LiJie20190102]

I will check and modify it myself. Thank you for your help