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DOC-745 | Misc release notes 3.12.5 #712

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DOC-745 | Misc release notes 3.12.5 #712

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12 changes: 12 additions & 0 deletions site/content/3.12/release-notes/version-3.12/whats-new-in-3-12.md
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Expand Up @@ -1626,6 +1626,18 @@ The following startup options for cluster deployments have been added:
The delay (in seconds) before shutting down a Coordinator if no heartbeat can
be sent. Set to `0` to deactivate this shutdown.

### Limit for shard synchronization actions

<small>Introduced in: v3.11.14, v3.12.5</small>

The number of `SynchronizeShard` actions that can be scheduled internally by the
cluster maintenance has been restricted to prevent these actions from blocking
`TakeoverShardLeadership` actions with a higher priority, which could lead to
service interruption during upgrades and after failovers.

The new `--server.maximal-number-sync-shard-actions` startup option controls
how many `SynchronizeShard` actions can be queued at any given time.

## Miscellaneous changes

### V8 and ICU library upgrades
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