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Note on backwards compatibility
editNote on backwards compatibility
editThe ability to query without an index expression was added in version 8.18, so when
querying remote clusters older than that, the local cluster will send the index
expression dummy* to those remote clusters. Thus, if an errors occur, you may see a reference
to that index expression even though you didn’t request it. If it causes a problem, you can
instead include an index expression like *:* to bypass the issue.
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