Mikhail Petrov created IGNITE-29120:
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Summary: Exclude deprecated fields from node-to-node transmission
after RU is completed
Key: IGNITE-29120
URL: https://issues.apache.org/jira/browse/IGNITE-29120
Project: Ignite
Issue Type: Task
Reporter: Mikhail Petrov
{code:java}
Changing the agreed set requires renegotiation, either by re-establishing the
connection or via complex mechanisms (comparable to key updates in TLS).
2.19 2.20
A A
B B (deprecated)
C C
While RU is in progress, field B is still filled by the previous logical
version's code, so it must be transmitted:
RU in progress (logical version is 2.19)
2.20 <------------> 2.20
A A A
B (filled) B B (filled)
C C C
Once RU is finished, the new logical version no longer fills B, so it is always
null and we don't want to send it anymore. But the nodes have already agreed on
B, so it is still transmitted:
RU finished (logical version is 2.20)
2.20 <------------> 2.20
A A A
B (null) B B (null)
C C C
There is currently no way to adjust the agreed field set during the session
lifetime, so a field that is always null keeps being transmitted.
{code}
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