You might encounter a problem in which metadata server cluster nodes do not successfully sync with each other. This problem typically occurs under the following conditions:

• You import a package that requires a large number of changes to the metadata servers. The number of changes exceeds the limits of the SAS IOM system.
• You use a SAS^® 9.4 deployment that contains a metadata server cluster configured with three or more cluster nodes that are in quorum and running normally.  
• The master node is redirecting client requests to two or more slave nodes in the cluster. 

When you encounter this problem, you might see messages similar to the following:

The metadata server might encounter an access violation:

Other metadata server logs might indicate that quorum is lost and achieved:

Workaround

If the two remaining servers are in quorum and the other system is down or has failed, you can work around the issue by completing these steps:  

1. Click Run Backup Now in SAS^® Management Console with only the two nodes in quorum.
2.  Run ./MetadataServer -recover on the failed node to start it again.

In SAS^® 9.4M6 (TS1M6), the import package checks the amount of changes and returns with the following error if there are too many changes:

Note: This issue is fixed in SAS 9.4M6.

Operating System and Release Information