NullPointerException - Missing Partition (Doc ID 2295572.1)

Last updated on AUGUST 29, 2023

Applies to:

Symptoms

With a topology of 5 machines. stgb-cache1 to stgb-cache5. Each machine has around 25 JVMs including storage enabled and disabled.

Brief sequence of events:

• Rolling upgrade process in underway
• Every time they do application upgrade, they start a brand new node with the new code, wait for MACHINE_SAFE of the service and then shutdown the old node.
• Member 27 requests partition 402 from member 153
• Member 153 says that partition 402 does not exist, throws a NullPointerException and leaves the service
• Member 153 just recently joined the cluster about 5 minutes prior to the NPE.
• Why is the Member 153 leaving the cluster with NPE?
• Issue happens about 1 out of 5 times as show below:

Brief sequence of events:

• Rolling upgrade process in underway
• Member 27 requests partition 402 from member 153
• Member 153 says that partition 402 does not exist, throws a NullPointerException and leaves the service

Changes

Cause

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