Github user brosander commented on a diff in the pull request:
https://github.com/apache/nifi/pull/1371#discussion_r94170804
--- Diff:
nifi-nar-bundles/nifi-update-attribute-bundle/nifi-update-attribute-processor/src/main/java/org/apache/nifi/processors/attributes/UpdateAttribute.java
---
@@ -424,59 +419,104 @@ public void onTrigger(final ProcessContext context,
final ProcessSession session
// because is the original flowfile is used for all matching
rules. in this
// case the order of the matching rules is preserved in the list
final Map<FlowFile, List<Rule>> matchedRules = new HashMap<>();
- Map<String, String> statefulAttributes = null;
+
+ final Map<String, String> stateInitialAttributes;
+ final Map<String, String> stateWorkingAttributes;
+ StateMap stateMap = null;
matchedRules.clear();
try {
if (stateful) {
- statefulAttributes = new
HashMap<>(context.getStateManager().getState(Scope.LOCAL).toMap());
+ stateMap = context.getStateManager().getState(Scope.LOCAL);
+ stateInitialAttributes = stateMap.toMap();
+ stateWorkingAttributes = new HashMap<>(stateMap.toMap());
} else {
- statefulAttributes = null;
+ stateInitialAttributes = null;
+ stateWorkingAttributes = null;
}
} catch (IOException e) {
- logger.error("Failed to update attributes for {} due to
failing to get state; transferring FlowFile back to '{}'", new
Object[]{flowFile, Relationship.SELF.getName()}, e);
- session.transfer(flowFile);
+ logger.error("Failed to get the initial state when processing
{}; transferring FlowFile back to it's incoming queue", new
Object[]{incomingFlowFile, Relationship.SELF.getName()}, e);
--- End diff --
also looks like you can remove the Relationship.SELF.getName() arg
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