404 when querying for alias soon after creation

Elastic Stack Elasticsearch
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When create an alias and then query for existence of that alias using GET /*/_alias/<alias_name> I'm sometimes getting 404s even though the alias definitely exists. Then what ends up happening is my app mistakenly recreates the alias, which now points to two indexes, and then I can't index new documents.

  1. Is it expected that /*/_alias/<alias_name> can sometimes return a 404 even though the alias exists? e.g., with freshly created aliases?
  2. If that's the case, how can I wait until the alias is fully ready before proceeding?

Thanks!

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