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Integrate closed replicated indices with closed follower indices #42442

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dnhatn opened this issue May 23, 2019 · 3 comments
Open

Integrate closed replicated indices with closed follower indices #42442

dnhatn opened this issue May 23, 2019 · 3 comments
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:Distributed Indexing/CCR Issues around the Cross Cluster State Replication features Team:Distributed (Obsolete) Meta label for distributed team (obsolete). Replaced by Distributed Indexing/Coordination.

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@dnhatn
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dnhatn commented May 23, 2019

A spin-off from #33888.

The follower indices do not always have the global checkpoint equals to max_seq_no when closing. Therefore, closing follower indices can make the cluster red. We need to make an alternative sanity check for follower closed indices.

Relates #33888
Relates #38767
Relates #41317

@dnhatn dnhatn added the :Distributed Indexing/Distributed A catch all label for anything in the Distributed Area. Please avoid if you can. label May 23, 2019
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Pinging @elastic/es-distributed

@tlrx tlrx mentioned this issue May 23, 2019
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@rjernst rjernst added the Team:Distributed (Obsolete) Meta label for distributed team (obsolete). Replaced by Distributed Indexing/Coordination. label May 4, 2020
@dnhatn dnhatn removed their assignment Feb 10, 2021
@pxsalehi pxsalehi added :Distributed Indexing/CCR Issues around the Cross Cluster State Replication features and removed :Distributed Indexing/Distributed A catch all label for anything in the Distributed Area. Please avoid if you can. labels Jul 29, 2022
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@tlrx
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tlrx commented Jun 29, 2023

Quoting Yannick in #38767 (comment):

We need to think how to integrate closed replicated indices with closed follower indices. In the current form, closing follower indices will result in them not being allocated, making the cluster go red. Perhaps instead of requiring max sequence number to be equal to global checkpoint for these shards, which is not guaranteed by the CCR following logic, it would be sufficient to check that max seq number and global checkpoint agree with the primary and require a sync id marker (i.e. perform a synced flush during the VerifyShardBeforeCloseAction) so that peer recovery will be instantaneous.

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Labels
:Distributed Indexing/CCR Issues around the Cross Cluster State Replication features Team:Distributed (Obsolete) Meta label for distributed team (obsolete). Replaced by Distributed Indexing/Coordination.
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