GitHub user jmark99 opened a pull request: https://github.com/apache/nifi/pull/2192
NIFI-1547: DistributedMapCacheServer: Ambiguous error on misconfiguration misconfiguration Updated PersistentMapCache constructor in PersistentMapCache.java to catch an OverlappingFileLockException and present a more useful error message before propagating the exception forward. The log message alerts user to possible duplicated persistencePath in call to PersistentMapCache. Created a test method to verify the exception is thrown as expected. 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: - [ ] Is there a JIRA ticket associated with this PR? Is it referenced in the commit message? - [ ] 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. - [ ] Has your PR been rebased against the latest commit within the target branch (typically master)? - [ ] Is your initial contribution a single, squashed commit? ### For code changes: - [ ] Have you ensured that the full suite of tests is executed via mvn -Pcontrib-check clean install at the root nifi folder? - [ ] 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/jmark99/nifi NIFI-1547 Alternatively you can review and apply these changes as the patch at: https://github.com/apache/nifi/pull/2192.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 #2192 ---- commit cd7a8fc91827688032c57a1955b5443cb588b653 Author: Mark Owens <jmark...@gmail.com> Date: 2017-10-03T14:48:42Z NIFI-1547: DistributedMapCacheServer: Ambiguous error on misconfiguration Updated PersistentMapCache constructor in PersistentMapCache.java to catch an OverlappingFileLockException and present a more useful error message before propagating the exception forward. The log message alerts user to possible duplicated persistencePath in call to PersistentMapCache. Created a test method to verify the exception is thrown as expected. ---- ---