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Deduplicate unique accounts and limit account array in descendants CTE
Limit unique accounts to check blocks from to 30 unique accounts (any new participant will have its blocks ignored for the purpose of displaying the posts). This is extremely unlikely to be reached in a legitimate situation, but would limit wasteful computation in specially-crafted threads with many participants.pull/18468/head
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@ -84,7 +84,11 @@ module Status::ThreadingConcern
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UNION ALL
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SELECT
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statuses.id, path || statuses.id, authors || statuses.account_id
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statuses.id, path || statuses.id, (CASE
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WHEN array_length(authors, 1) >= 30 THEN authors
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WHEN statuses.account_id = ANY(authors) THEN authors
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ELSE authors || statuses.account_id
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END)
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FROM
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search_tree
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JOIN
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