Interconnect errors encountered after upgrade from GPDB 6 to GPDB 7
Article ID: 395861
Updated On:
Products
Issue/Introduction
Following error may be encountered on Greenplum Database cluster after upgrade from GPDB6 to GPDB7:
Error "interconnect encountered a network error, please check your network"Environment
Greenplum Database 7
Cause
It is recommended to validate the parameter "gp_interconnect_address_type" value is set to the intended value.
The default value for the same GUC has been changed to "unicast" in GPDB7 after it had default value of "wildcard" in GPDB6.
Despite "unicast" is the current recommended value, on a cluster that is preconfigured to benefit from "wildcard" setting value functionality, the new value can potentially result in host communication errors.
Additional factors that can potentially lead to the same error are outlined in the following document:
https://knowledge.broadcom.com/external/article/372061/error-interconnect-encountered-a-network.html
Resolution
It is recommended to validate the parameter "gp_interconnect_address_type" value is set to the intended value.
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