[NIFI-8908] Can't save new version after partition allowed to fill to 100%

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: NiFi Registry
• Assignee: Unassigned
• Reporter: Brandon Rhys DeVries
• Created: 10/Apr/20 18:36
• Updated: 16/Jul/21 18:14

Description

After the partition containing nifi registry was allowed to fill, it can no longer save a new flow version.  It appears as though the save partialy occurred as the disk was filling.  However, now the UI reports up to version 31, but when trying to save we see the error:

 

2020-04-10 09:48:55,667 ERROR org.apache.nifi.registry.web.mapper.ThrowableMapper: An unexpected error has occurred: org.apache.nifi.registry.flow.FlowPersistenceException: Unable to save, a snapshot already exists with version 32. Retur
ning Internal Server Error response.
org.apache.nifi.registry.flow.FlowPersistenceException: Unable to save, a snapshot already exists with version 32 

To recover, I had to manually remove the directory:

/var/lib/nifiregistry/flow_storage/4fad39b1-cc20-4dbc-a41a-7f04e393a675/49fd76ae-041d-4509-aa7e-af24f1682f09/32