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Merge pull request #5475 from EnterpriseDB/docs/ba/fix/DOCS-278-ba-pg…
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DOCS-278 and DOCS-262
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djw-m authored Apr 9, 2024
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Expand Up @@ -39,18 +39,12 @@ This cannot be changed, either at initialization or after the cluster is created

## Replication

### A PGD replication slot may fail to transition cleanly from disconnect to catch up
As part of fault injection testing with PGD on BigAnimal, you may decide to delete VMs.
Your cluster will recover if you do so, as expected.
However, if you're testing in a bring-your-own-account (BYOA) deployment, in some cases, as the cluster is recovering, a replication slot may remain disconnected.
This will persist for a few hours until the replication slot recovers automatically.

### Replication speed is slow during a large data migration
During a large data migration, when migrating to a PGD cluster, you may experience a replication rate of 20 MBps.

### PGD leadership change on healthy cluster
PGD clusters that are in a healthy state may experience a change in PGD node leadership, potentially resulting in failover.
No intervention is needed as a new leader will be appointed.
The client applications will need to reconnect when a leadership change occurs.

### Extensions which require alternate roles are not supported
Where an extension requires a role other than the default role (`streaming_replica`) used for replication, it will fail when attempting to replicate.
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