Maximilian Michels created FLINK-2667:
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Summary: Rework configuration parameters
Key: FLINK-2667
URL: https://issues.apache.org/jira/browse/FLINK-2667
Project: Flink
Issue Type: Improvement
Components: Start-Stop Scripts
Affects Versions: 0.10
Reporter: Maximilian Michels
Fix For: 0.10
In the course of FLINK-2641, we came up with some changes to make the
configuration parameters more meaningful and self-explanatory. Some concerns
about backwards-compatibility were raised in the associated pull request:
https://github.com/apache/flink/pull/1125. That's why I decided to delay those
changes.
Here are the changes to the configuration which I would like to propose:
{{taskmanager.memory.size}} --> {{taskmanager.memory.managed}}
{{taskmanager.memory.fraction}} --> {{taskmanager.memory.managed.fraction}}
{{taskmanager.heap.mb}} --> {{taskmanager.memory}}
(Change its meaning to combined JVM heap + off-heap memory)
{{jobmanager.heap.mb}} --> {{jobmanager.memory}}
{{taskmanager.network.numberOfBuffers}} --> {{taskmanager.network.memory}}
(Specify the network size in terms of space and not in terms of the number of
buffers)
I think those changes would make configuration easier and improve the overall
user experience of Flink. The drawback is that it requires some users to update
their config files. I believe the negative impact will be very little because
only two of the changed parameters are present in the default config. Adapting
to these new parameters should be easy because they make a lot more sense but I
wanted to put this up for debate.
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