Github user vrozov commented on a diff in the pull request: https://github.com/apache/apex-core/pull/364#discussion_r73425701 --- Diff: engine/src/main/java/com/datatorrent/stram/engine/OperatorContext.java --- @@ -84,12 +87,13 @@ public void setIdleTimeout(long idleTimeout) * @param attributes the value of attributes * @param parentContext */ - public OperatorContext(int id, AttributeMap attributes, Context parentContext) + public OperatorContext(int id, String operatorName, AttributeMap attributes, Context parentContext) { super(attributes, parentContext); this.lastProcessedWindowId = Stateless.WINDOW_ID; this.id = id; this.stateless = super.getValue(OperatorContext.STATELESS); + this.operatorName = Preconditions.checkNotNull(operatorName, "operator name"); --- End diff -- Do you mean that LogicalPlan.addOperator() allows empty name? Does not it also allows `null`? Is there any reason to allow `null` or empty string?
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