Rolling upgrade, use transient settings to disable shard allocation

[bharath-elastic]

Here https://www.elastic.co/guide/en/elasticsearch/reference/current/rolling-upgrades.html
Step 1: Disable shard allocation using persistent settings
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Step 7: Enable shard allocation using transient settings (overrides persistent)
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Step 9: Repeat steps for every node
If I repeat step 1 for the next node and disable shard allocation using "persistent settings", that wouldn't override the enabled shard allocation (which was set using transient settings in Step 7 of previous iteration) and won't get disabled correct? Unless I am missing something this is a bug? Please confirm.

[debadair]

The docs need further changes. There's an issue for this in the ES repo: elastic/elasticsearch#27677

FYI, content issues should be opened in the appropriate product repo. We use this repo to track doc infra issues.