Description
Today when we print the topology via the Topology#describe()#toString, the processor nodes are not sorted inside the TopologyDescription.toString() function. For example, for the word count demo topology we get:
Sub-topologies: Sub-topology: 0 Processor: KSTREAM-FILTER-0000000005(stores: []) --> KSTREAM-SINK-0000000004 <-- KSTREAM-MAP-0000000002 Source: KSTREAM-SOURCE-0000000000(topics: streams-wordcount-input) --> KSTREAM-FLATMAPVALUES-0000000001 Processor: KSTREAM-FLATMAPVALUES-0000000001(stores: []) --> KSTREAM-MAP-0000000002 <-- KSTREAM-SOURCE-0000000000 Processor: KSTREAM-MAP-0000000002(stores: []) --> KSTREAM-FILTER-0000000005 <-- KSTREAM-FLATMAPVALUES-0000000001 Sink: KSTREAM-SINK-0000000004(topic: Counts-repartition) <-- KSTREAM-FILTER-0000000005 Sub-topology: 1 Source: KSTREAM-SOURCE-0000000006(topics: Counts-repartition) --> KSTREAM-AGGREGATE-0000000003 Sink: KSTREAM-SINK-0000000008(topic: streams-wordcount-output) <-- KTABLE-TOSTREAM-0000000007 Processor: KTABLE-TOSTREAM-0000000007(stores: []) --> KSTREAM-SINK-0000000008 <-- KSTREAM-AGGREGATE-0000000003 Processor: KSTREAM-AGGREGATE-0000000003(stores: [Counts]) --> KTABLE-TOSTREAM-0000000007 <-- KSTREAM-SOURCE-0000000006
While ideally we want:
Sub-topologies: Sub-topology: 0 Source: KSTREAM-SOURCE-0000000000(topics: streams-wordcount-input) --> KSTREAM-FLATMAPVALUES-0000000001 Processor: KSTREAM-FLATMAPVALUES-0000000001(stores: []) --> KSTREAM-MAP-0000000002 <-- KSTREAM-SOURCE-0000000000 Processor: KSTREAM-MAP-0000000002(stores: []) --> KSTREAM-FILTER-0000000005 <-- KSTREAM-FLATMAPVALUES-0000000001 Processor: KSTREAM-FILTER-0000000005(stores: []) --> KSTREAM-SINK-0000000004 <-- KSTREAM-MAP-0000000002 Sink: KSTREAM-SINK-0000000004(topic: Counts-repartition) <-- KSTREAM-FILTER-0000000005 Sub-topology: 1 Source: KSTREAM-SOURCE-0000000006(topics: Counts-repartition) --> KSTREAM-AGGREGATE-0000000003 Processor: KSTREAM-AGGREGATE-0000000003(stores: [Counts]) --> KTABLE-TOSTREAM-0000000007 <-- KSTREAM-SOURCE-0000000006 Processor: KTABLE-TOSTREAM-0000000007(stores: []) --> KSTREAM-SINK-0000000008 <-- KSTREAM-AGGREGATE-0000000003 Sink: KSTREAM-SINK-0000000008(topic: streams-wordcount-output) <-- KTABLE-TOSTREAM-0000000007
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