Github user revans2 commented on a diff in the pull request: https://github.com/apache/storm/pull/2711#discussion_r196843223 --- Diff: examples/storm-elasticsearch-examples/src/main/java/org/apache/storm/elasticsearch/common/EsTestUtil.java --- @@ -56,7 +57,7 @@ public static Tuple generateTestTuple(final String source, GeneralTopologyContext topologyContext = new GeneralTopologyContext( builder.createTopology(), new Config(), - new HashMap<>(), + new CustomIndexArray<String>(0,1), --- End diff -- Nit: java should be able to figure out that it is a `String` from the required type for GeneralTopologyContext
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