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Hi,

Yesterday we noticed an issue with the ruwiki database similar to the previous issue with commons (specifically, missing rows in ruwiki.revision). It's not clear what causes this, but the most likely candidate seems to be mydumper, the tool we use to produce database dumps. We will therefore be reimporting s3, s4 and s6 (which were all recently imported with mydumper) to hyacinth using mysqldump instead, then switching these clusters from the current server (cassia) to hyacinth.

This issue is being tracked in JIRA is MNT-438.

- river.