[NIFI-3214] Add a method to DistributedMapCacheClient to replace existing key only if it hasn't been changed

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.2.0
• Component/s: Extensions
• Assignee: Koji Kawamura
• Reporter: Bryan Bende
• Created: 16/Dec/16 15:13
• Updated: 16/Jan/17 17:35
• Resolved: 16/Jan/17 17:35

Description

It would be helpful for some processors to be able to get a list of all the keys in the distributed map cache that match some pattern, or even to get a list of all the keys. We should update DistributedMapCacheClient to have a method like getKeys(String pattern). replace an existing key in the distributed map cache with concurrency control so that the key will be replaced only if it hasn't been updated by other operations since updating client program fetched the key.

Updated JIRA description as mentioned in NIFI-3216.

Issue Links

• is related to: NIFI-3216 Add ability to wait for N signals to Wait/Notify processors
• links to: GitHub Pull Request #1410