Github user HeartSaVioR commented on a diff in the pull request:
https://github.com/apache/storm/pull/1541#discussion_r69841403
--- Diff: storm-core/src/jvm/org/apache/storm/utils/TopologySpoutLag.java
---
@@ -43,26 +43,44 @@
public static List<Map<String, Object>> lag (StormTopology
stormTopology, Map topologyConf) {
List<Map<String, Object>> result = new ArrayList<>();
Map<String, SpoutSpec> spouts = stormTopology.get_spouts();
- Object object = null;
+ String className = null;
for (Map.Entry<String, SpoutSpec> spout: spouts.entrySet()) {
try {
SpoutSpec spoutSpec = spout.getValue();
ComponentObject componentObject =
spoutSpec.get_spout_object();
- object = Utils.getSetComponentObject(componentObject);
--- End diff --
The problem starts here. For many situation we can't deserialize Spout
object since UI doesn't have dependency for that Spout, for example,
storm-kafka or storm-kafka-client.
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