kangkaisen commented on issue #245: Colocate Join URL: https://github.com/apache/incubator-doris/issues/245#issuecomment-430885921 > What if the parent table is being rebalanced when we try to create child table at same time? > For this moment, the tablets of parent table are unstable. > > I don't think there is a simple way keep all co-located tablets in right place all the time. > So maybe we should offer a command to 'REPAIR' the co-locate tables. > > Maybe reuse the logic of 'ALTER TABLE'? Hi @morningman I have considered this case. Before colocate tables balancing, the backendsPerBucketSeq will update firstly and the backendsPerBucketSeq updating is fast. After backendsPerBucketSeq udpated, the new child table could use the new backendsPerBucketSeq, and when backendsPerBucketSeq is updating, the `createTablets` for creating new child table will block.
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