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155a47cc55
Previous assumption was that there can only be one regular base column in the view key. The assumption is still correct for tables created via CQL, but it's internally possible to create a view with multiple such columns - the new assumption is that if there are multiple columns, they share their liveness. This patch is vital for indexing to work properly on alternator, so it would be best to solve the issue upstream. I strived to leave the existing semantics intact as long as only up to one regular column is part of the materialized view primary key, which is the case for Scylla's materialized views. For alternator it may not be true, but all regular columns in alternator share liveness info (since alternator does not support per-column TTL), which is sufficient to compute view updates in a consistent way. Fixes #5006 Tests: unit(dev), alternator(test_gsi_update_second_regular_base_column, tic-tac-toe demo) Message-Id: <c9dec243ce903d3a922ce077dc274f988bcf5d57.1567604945.git.sarna@scylladb.com>