Github user jfrazee commented on the issue: https://github.com/apache/nifi/pull/609 1. @JPercivall I addressed all your comments above and added a template to https://gist.github.com/jfrazee/a501336826aa77d0daa74e8e0aa3afd0. 2. There is one change in behavior now -- a cache size of 0 disables the cache whereas it was just allowing for an arbitrarily large cache. 3. There's a screenshot of the example data flow added to https://issues.apache.org/jira/browse/NIFI-2142 which illustrates the difference between running with and without caching. It's not 100% apples to apples with the older TransformXml, but behaves the same way. The queues back up and there's a stark contrast in Tasks/Time. 4. I rebased on the latest master, but contrib-check is failing because of the commenting style on AbstractSNMPProcessor.
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