[NIFI-892] If the "nifi.flowfile.repository.partitions" property is changed to a smaller value, FlowFIles not restored properly

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: 0.3.0
• Component/s: Core Framework
• Assignee: Mark Payne
• Reporter: Mark Payne
• Created: 24/Aug/15 20:22
• Updated: 25/Aug/15 13:59
• Resolved: 25/Aug/15 13:59

Description

To recreate:

1. Start NiFi and run some data through it.
2. Kill NiFi (may not happen if the FlowFile repo was just checkpointed; the logs would indicate this)
3. Change the "nifi.flowfile.repository.partitions" property in conf/nifi.properties from 256 to 6
4. Restart NiFi

At this point, any updates to the Write-Ahead Log that occurred on journal-7 through journal-256 will be lost. This can cause some bizarre behavior, such as FlowFiles that have finished processor could be reprocessed. FlowFiles could also lose attributes (or could be re-processed without having all of their attributes present).