Support Article
Declare page not synchronizing in other nodes - run in 1 node
SA-65133
Summary
When a node level read-only data page is removed after it is expired, the page must load and synchronize across all the nodes in the cluster.
For more information, refer to:
https://community.pega.com/sites/default/files/help_v74/express/procomhelpmain.htm#engine/data-pages/eng-refreshing-expired-data-page-con.htm
However, after a page-remove on the data page, the page does not reappear in the Clipboard in any of the nodes.
Error Messages
Not Applicable
Steps to Reproduce
- Configure a node level read-only data page.
- Enable an agent on all the nodes to load the data page using load-datapage method.
- Run an activity to remove the data page using the page-remove method. This removes the data page from all the nodes in the cluster. However, the data page does not reappear automatically.
Root Cause
An error or omission in product documentation.
According to the Help document, You can refresh node-level data pages. If you refresh an expired data page using any of the following methods, the system synchronizes all nodes by refreshing the data page on all nodes in the system:
- Use Page-Remove in an activity.
- Click Clear Data Page on the Load Management tab of the data page rule form.
- Click Run for a data page, then on the dialog that appears select the check box to clear existing instances of the data page.
Resolution
Here's the explanation for the reported behavior:
When the node-level data page is removed (expire) using any of the above mentioned methods, the system synchronizes all the nodes by removing (expiring) the data page on all the nodes in the system. The data page is loaded on a given node when a requestor refers to that page.
Published February 22, 2019 - Updated October 8, 2020
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