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ASF GitHub Bot commented on NIFI-5420: -------------------------------------- GitHub user mattyb149 opened a pull request: https://github.com/apache/nifi/pull/2886 NIFI-5420: Allow StandardProcessSession to calculate duration for provenance events Thank you for submitting a contribution to Apache NiFi. In order to streamline the review of the contribution we ask you to ensure the following steps have been taken: ### For all changes: - [x] Is there a JIRA ticket associated with this PR? Is it referenced in the commit message? - [x] Does your PR title start with NIFI-XXXX where XXXX is the JIRA number you are trying to resolve? Pay particular attention to the hyphen "-" character. - [x] Has your PR been rebased against the latest commit within the target branch (typically master)? - [x] Is your initial contribution a single, squashed commit? ### For code changes: - [x] Have you ensured that the full suite of tests is executed via mvn -Pcontrib-check clean install at the root nifi folder? - [x] Have you written or updated unit tests to verify your changes? - [ ] If adding new dependencies to the code, are these dependencies licensed in a way that is compatible for inclusion under [ASF 2.0](http://www.apache.org/legal/resolved.html#category-a)? - [ ] If applicable, have you updated the LICENSE file, including the main LICENSE file under nifi-assembly? - [ ] If applicable, have you updated the NOTICE file, including the main NOTICE file found under nifi-assembly? - [ ] If adding new Properties, have you added .displayName in addition to .name (programmatic access) for each of the new properties? ### For documentation related changes: - [ ] Have you ensured that format looks appropriate for the output in which it is rendered? ### Note: Please ensure that once the PR is submitted, you check travis-ci for build issues and submit an update to your PR as soon as possible. You can merge this pull request into a Git repository by running: $ git pull https://github.com/mattyb149/nifi NIFI-5420 Alternatively you can review and apply these changes as the patch at: https://github.com/apache/nifi/pull/2886.patch To close this pull request, make a commit to your master/trunk branch with (at least) the following in the commit message: This closes #2886 ---- commit c9aa7caae52eda571a36cabbbf6829bc15583f3b Author: Matthew Burgess <mattyb149@...> Date: 2018-07-12T21:13:32Z NIFI-5420: Allow StandardProcessSession to calculate duration for provenance events ---- > Allow StandardProcessSession to calculate duration for provenance events > ------------------------------------------------------------------------ > > Key: NIFI-5420 > URL: https://issues.apache.org/jira/browse/NIFI-5420 > Project: Apache NiFi > Issue Type: Improvement > Components: Core Framework > Reporter: Matt Burgess > Assignee: Matt Burgess > Priority: Major > > Besides some automatic provenance events being emitted by the framework, the > onus is on each processor to register provenance events and to provide a > duration for the amount of time spent on the operation that results in the > provenance event(s). However, supplying the duration is not mandatory, and if > not provided, a value of -1 is stored to indicate that the duration is > unknown. > Unfortunately there are many processors that do not track the operation time > and thus do not store it in the provenance event. However, the time from when > a flow file is fetched or created in a session to the time the provenance > event is recorded is a legitimate measure of the time the flow file spent > "active" in the session, which is the same as the duration of a provenance > event. > This Jira proposes to record the "start" time of each flow file (more > specifically, it's StandardRepositoryRecord), and upon session.commit(), > record the duration of the flow file while active in the session into the > provenance event(s), only if the duration has not already been supplied to > the provenance events. -- This message was sent by Atlassian JIRA (v7.6.3#76005)