Wilfred Spiegelenburg created YUNIKORN-337:
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Summary: interface message complexity
Key: YUNIKORN-337
URL: https://issues.apache.org/jira/browse/YUNIKORN-337
Project: Apache YuniKorn
Issue Type: Improvement
Components: scheduler-interface
Reporter: Wilfred Spiegelenburg
Assignee: Wilfred Spiegelenburg
The current interface allows us to only send one message between a shim and the
core. This provides us with a really simple way of interactions definition.
The complexity is however hidden in the message itself. Every message serves
multiple purposes and when the message is received the core and shim need to
unpack it and process each part separately and for certain parts in a real
specific order.
Because the message serves a number of purposes it has a large overhead. This
might not show up in the code directly as the heavy lifting is done in the
generated code. It will show up in the amount of data as a message, even if it
does not have all fields, still needs to be encoded in a way that it unpacks
correctly on the other side.
The trade off between having one message with a simple interface or multiple
more focussed messages with a slightly more complex interface needs to be
assessed.
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