Addshore added a comment.
In T241212#5784995 <https://phabricator.wikimedia.org/T241212#5784995>, @Ladsgroup wrote: > Fun thing is that we basically can't be 100% sure if any row is orphan unless we lock both tables and won't let any write queries happening on them which is not possible but given that these tables are huge and queries to find orphan rows would long time we can't say for sure there has been writes in the mean time making us think some rows are orphan (the easiest way to mitigate most of the issue is to trimming all rows that have a high PK id Could have a look at the hadoop snapshots (as they dont get updated live ;)) TASK DETAIL https://phabricator.wikimedia.org/T241212 EMAIL PREFERENCES https://phabricator.wikimedia.org/settings/panel/emailpreferences/ To: Ladsgroup, Addshore Cc: Ladsgroup, Addshore, Aklapper, Iflorez, darthmon_wmde, alaa_wmde, Nandana, Lahi, Gq86, GoranSMilovanovic, QZanden, LawExplorer, _jensen, rosalieper, Scott_WUaS, Jonas, Wikidata-bugs, aude, Lydia_Pintscher, Mbch331
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