markap14 opened a new pull request, #9446: URL: https://github.com/apache/nifi/pull/9446
…ryContextFactory and added it to the DataflowTriggerContext. This was necessary because the previous design overlooked the possibility of many threads concurrently running the same dataflow. They all shared the same StatelessProvenanceRepository, but the code was designed as if only a single thread would be using the repository. As a result, the events that were registered with the stateless prov repo were being copied many times into NiFi's underlying provenance repository. This refactoring also led to the discovery of some old Java 8 syntax that could be cleaned up, and it led to the discovery of some methods that were no longer being used and could be cleaned up. Finally, in testing, I found that when a Stateless Group was scheduled, it scheduled the triggering of the stateless group before marking the state as RUNNING; as a result, the second thread could run, determine that the state is STARTING instead of RUNNING, and return without triggering the stateless group. This wa s addressed by ensuring that we set the state to RUNNING before triggering the stateless group to be triggered. <!-- Licensed to the Apache Software Foundation (ASF) under one or more --> <!-- contributor license agreements. See the NOTICE file distributed with --> <!-- this work for additional information regarding copyright ownership. --> <!-- The ASF licenses this file to You under the Apache License, Version 2.0 --> <!-- (the "License"); you may not use this file except in compliance with --> <!-- the License. You may obtain a copy of the License at --> <!-- http://www.apache.org/licenses/LICENSE-2.0 --> <!-- Unless required by applicable law or agreed to in writing, software --> <!-- distributed under the License is distributed on an "AS IS" BASIS, --> <!-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. --> <!-- See the License for the specific language governing permissions and --> <!-- limitations under the License. --> # Summary [NIFI-00000](https://issues.apache.org/jira/browse/NIFI-00000) # Tracking Please complete the following tracking steps prior to pull request creation. ### Issue Tracking - [ ] [Apache NiFi Jira](https://issues.apache.org/jira/browse/NIFI) issue created ### Pull Request Tracking - [ ] Pull Request title starts with Apache NiFi Jira issue number, such as `NIFI-00000` - [ ] Pull Request commit message starts with Apache NiFi Jira issue number, as such `NIFI-00000` ### Pull Request Formatting - [ ] Pull Request based on current revision of the `main` branch - [ ] Pull Request refers to a feature branch with one commit containing changes # Verification Please indicate the verification steps performed prior to pull request creation. ### Build - [ ] Build completed using `mvn clean install -P contrib-check` - [ ] JDK 21 ### Licensing - [ ] New dependencies are compatible with the [Apache License 2.0](https://apache.org/licenses/LICENSE-2.0) according to the [License Policy](https://www.apache.org/legal/resolved.html) - [ ] New dependencies are documented in applicable `LICENSE` and `NOTICE` files ### Documentation - [ ] Documentation formatting appears as expected in rendered files -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
