Joseph Witt created NIFI-909:
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Summary: Update documentation and/or automate permgen settings for
Java 7
Key: NIFI-909
URL: https://issues.apache.org/jira/browse/NIFI-909
Project: Apache NiFi
Issue Type: Bug
Components: Configuration, Documentation & Website
Reporter: Joseph Witt
Fix For: 0.4.0
NiFi loads a lot of classes due to its class loading model and extensibility.
In Java 7 the Perm Gen is quite small by default. As a result a new user can
get nifi running then suddenly see permgen issues. This is confusing and
annoying and avoidable.
We could add something about this in the documentation. That is the least we
can do. We could also add something in the UI that warns, like a bulletin,
about permgen being close to full, and we could add something to the startup
scripts that when it is Java 7 it will set the permgen larger by default if the
user doesn't have those settings established.
We could probably also just leave those settings active by default but on Java
8 it would print at least a warning which could also lead to confusion
In Java 8 this is goes away entirely and is a non-issue.
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