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1ac5c6f100
Today when upgrading to the next major version we have a so-called _major version barrier_: once the cluster comprises nodes of the new major version then nodes of the previous major version are prevented from joining the cluster. This means we can be certain that `clusterState.nodes().getMinNodeVersion().major` will never decrease, so we can implement upgrade logic that relies on the cluster remaining in its wholly-upgraded state. This commit generalises this behaviour to apply to all upgrades, so that we can be certain that `clusterState.nodes().getMinNodeVersion()` will never decrease in a running cluster. Backport of #73358 Closes #72911 |
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| .. | ||
| close-ml.asciidoc | ||
| cluster_restart.asciidoc | ||
| disable-shard-alloc.asciidoc | ||
| open-ml.asciidoc | ||
| preparing_to_upgrade.asciidoc | ||
| reindex_upgrade.asciidoc | ||
| remove-xpack.asciidoc | ||
| rolling_upgrade.asciidoc | ||
| set-paths-tip.asciidoc | ||
| shut-down-node.asciidoc | ||
| synced-flush.asciidoc | ||
| upgrade-node.asciidoc | ||