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Cluster replicas attempt outgoing migrations #3964

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andydunstall opened this issue Oct 23, 2024 · 0 comments · May be fixed by #3985

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andydunstall commented Oct 23, 2024 •

edited by kostasrim

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Say you have two shards

Shard A has a master (A1) and replica (A2), and owns slots 0-6000
Shard B has a master (B1) and a replica (B2), and owns slots 6001-16000

If you start a migration with source=shard A, target = B1, then propagate the cluster config to all shards

Both A1 (master) and A2 (replica) will attempt to start an outgoing migration? Though it should only be the master A1

andydunstall added the bug label

BorysTheDev self-assigned this

BorysTheDev linked a pull request

that will close this issue

fix: prevent starting migrations from replica #3985

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