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Fix Race in testGetSnapshotsRequest (#61694) #61700

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Merged
merged 1 commit into from
Aug 31, 2020

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original-brownbear
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The fact that the data node is already blocked on writing
data files did not guarantee that the cluster state that made
the data node start snapshotting is already applied on master.
This could lead to races where the get snapshots action still
runs based on a state without the snapshot in it, tripping the assertion.
Much safer to handle this by waiting on the non-blocking snapshot create
to return, which guarantees that the CS has been applied on master.

Closes #61541

backport of #61694

The fact that the data node is already blocked on writing
data files did not guarantee that the cluster state that made
the data node start snapshotting is already applied on master.
This could lead to races where the get snapshots action still
runs based on a state without the snapshot in it, tripping the assertion.
Much safer to handle this by waiting on the non-blocking snapshot create
to return, which guarantees that the CS has been applied on master.

Closes elastic#61541
@original-brownbear original-brownbear added :Distributed Coordination/Snapshot/Restore Anything directly related to the `_snapshot/*` APIs backport labels Aug 31, 2020
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Pinging @elastic/es-distributed (:Distributed/Snapshot/Restore)

@elasticmachine elasticmachine added the Team:Distributed (Obsolete) Meta label for distributed team (obsolete). Replaced by Distributed Indexing/Coordination. label Aug 31, 2020
@original-brownbear original-brownbear merged commit 5c86b21 into elastic:7.x Aug 31, 2020
@original-brownbear original-brownbear deleted the 61541-7.x branch August 31, 2020 09:06
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backport :Distributed Coordination/Snapshot/Restore Anything directly related to the `_snapshot/*` APIs Team:Distributed (Obsolete) Meta label for distributed team (obsolete). Replaced by Distributed Indexing/Coordination.
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