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(4.x to 5.2) Upgrading Replicated Servers
Chapter 2 Upgrading From Previous Versions 61
Figure 2-2 Example 4.x Topology with Additional New Server
Figure 2-3 shows the first step in replacing a 4.x branch.
Notice the entire branch stops receiving replication updates during the upgrade.
This interruption starts when the upstream 4.x consumer is stopped for upgrade,
and ends when you restart the 4.x consumer.
As mentioned in the instructions, you may choose to direct client requests to
consumers on another branch if clients require the very latest updates available.
Figure 2-3 Example 4.x Branch During Upgrade - Step 1
4.x Master
4.x Hub
4.x Consumer
5.2 Master,
Legacy
Consumer
4.x Consumer
4.x Consumer
4.x Master
4.x Hub
4.x Consumer
5.2 Master,
Legacy
Consumer
5.2 Hub
4.x Consumer
4.x Consumer
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