Ferenc Gerlits created NIFI-13997:
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Summary: When loading a Python processor, do not load other
processor code
Key: NIFI-13997
URL: https://issues.apache.org/jira/browse/NIFI-13997
Project: Apache NiFi
Issue Type: Improvement
Reporter: Ferenc Gerlits
Assignee: Ferenc Gerlits
When NiFi loads the code for a Python processor contained in a package, it
loads all Python files in that package (directory). This means that the
dependencies of all processors in the package must be identical.
In some cases, the user may want to have the ProcA and ProcB processors in the
same package to have some common dependencies dep_common (listed in the
{{requirements.txt}} file) plus each processor to have some extra dependencies,
say dep_a and dep_b (listed in {{ProcessorDetails.dependencies}} in each
processor module). When loading ProcA, we currently only install the dep_common
+ dep_a dependencies, but then try to load both ProcA and ProcB, which will
fail due to the missing dep_b dependencies.
To solve this problem, when we load a processor from a package, we should not
load any other processors in the same package. We should load all non-processor
helper files plus the single processor requested by the user.
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