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First step of rolling update cluster serlializer no classmanifests (#28514)

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* First step of rolling update for cluster serlializer to not use class manifests #13654

* Test coverage

* A bit of mima excludes makes jenkins a happy butler

* Docs mention
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Johan Andrén 2020-01-27 12:58:40 +01:00 • committed by Patrik Nordwall
parent 8d8fa29f47
commit b1699b026e
4 changed files with 157 additions and 44 deletions
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13
akka-docs/src/main/paradox/project/rolling-update.md
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@ -73,3 +73,16 @@ versions 2.5.18, 2.5.19, 2.5.20 or 2.5.21.
### 2.6.0 Several changes in minor release
See @ref:[migration guide](migration-guide-2.5.x-2.6.x.md) when updating from 2.5.x to 2.6.x.
### 2.6.2 ClusterMessageSerializer manifests change
Issue: [#23654](https://github.com/akka/akka/issues/13654)
In preparation of switching away from class based manifests to more efficient letter codes the `ClusterMessageSerializer`
has been prepared to accept those shorter forms but still emits the old long manifests.
* 2.6.2 - shorter manifests accepted
* 2.6.3 - shorter manifests emitted (not released yet)
This means that a rolling upgrade will have to go through 2.6.2 and 2.6.3 when upgrading to 2.6.3 or higher or else
cluster nodes will not be able to communicate during the rolling upgrade.