Github user mcgilman commented on the pull request:
https://github.com/apache/nifi/pull/413#issuecomment-217427533
Started reviewing this PR. I deployed to a cluster that had an existing
flow. Node startup failed with this error.
```
java.lang.RuntimeException: java.io.InvalidClassException:
org.apache.nifi.web.Revision; local class incompatible: stream classdesc
serialVersionUID = 988658790374170022, local class serialVersionUID =
4915920088260082709
at
org.apache.nifi.web.util.WebUtils.deserializeHexToObject(WebUtils.java:193)
~[nifi-web-utils-1.0.0-SNAPSHOT.jar:1.0.0-SNAPSHOT] at
org.apache.nifi.web.filter.NodeRequestFilter.doFilter(NodeRequestFilter.java:83)
~[classes/:na]
```
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