Your Cloud, Your Rules: Ververica's Bring Your Own Cloud Deployment
Ververica Platform startup fails, and the logs of the gateway
container show the following exception:
liquibase.executor.jvm.JdbcExecutor : SELECT LOCKED FROM DATABASECHANGELOGLOCK WHERE ID=1
l.lockservice.StandardLockService : Waiting for changelog lock....
vvp.persistence
set to anything but legacy
Run the following command against your database to manually delete the stale lock that is preventing the startup:
UPDATE DATABASECHANGELOGLOCK SET LOCKED=0;
UPDATE DATABASECHANGELOGLOCK SET LOCKED=FALSE;
This will allow the gateway
container to start.
On application startup, Ververica Platform performs a schema migration of its metadata store if its schema has changed. It takes the database lock, verifies the schema, changes the schema (if necessary), and releases the lock again. If you (or Kubernetes) interrupt the pod at any time between these steps, you may run into a race condition in the Spring application signal handling that may not release the database lock. If this lock still exists during startup, it will prevent the migration step and fail with the error shown above.