Index aliases are there any impact on the cluster when updating it?

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1

Hello,
For example, if I create an index alias, like in the example

POST /_aliases
{
    "actions" : [
        { "add" : { "index" : "test1", "alias" : "alias1" } }
    ]
}

but then i want to preserve the alias1 and swap it with "index": "test2", what is the correct way to do this?

do i have to remove the alias first from test1 index and then add it to test2 index?

2

You can do it in one operation by having two actions, one to add and one to delete.

3

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