Ed Berezitsky created NIFI-5770:
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Summary: Memory Leak in ExecuteScript
Key: NIFI-5770
URL: https://issues.apache.org/jira/browse/NIFI-5770
Project: Apache NiFi
Issue Type: Bug
Components: Core Framework
Affects Versions: 1.8.0
Reporter: Ed Berezitsky
Assignee: Ed Berezitsky
ExecuteScript with Jython engine has memory leak.
It uses JythonScriptEngineConfigurator class to configure jython execution
environment.
The problem is in the line:
{code:java}
engine.eval("sys.path.append('" + modulePath + "')");{code}
There is no check if a module has already been added previously.
As a result, with each execution (onTrigger), string value of module property
is being appended, and never reset.
Although InvokeScriptedProcessor uses the same engine configurator, memory leak
is not reproducable in it,
because ISP builds the engine and compile the code only once (and rebuilds
every time any relevant property is changed).
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