[IGNITE-18424] WAL segment rollover does not happen after walForceArchiveTimeout

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.14
• Fix Version/s: 2.15
• Labels: IEP-59 ise
• Release Note: Fixed WAL timeout rollover
• Ignite Flags: Release Notes Required
• Assignee: Nikolay Izhikov
• Reporter: Ilya Shishkov
• Created: 15/Dec/22 15:40
• Updated: 24/Apr/23 15:08
• Resolved: 16/Dec/22 11:59

Description

How to reproduce:

1. Start and activate persistent cluster with such properties:
   1. DataStorageConfiguration#walForceArchiveTimeout > 0, eg. 10000 millis.
   2. DataRegion#cdcEnabled=true.
   3. DataStorageConfiguration#walSegmentSize=1Gb.
   4. DataStorageConfiguration#maxWalArchiveSize=20Gb.
2. Start data changing (put some entries continuously).
3. Rollover of WAL is not happening. You can wait some period exceeding walForceArchiveTimeout to ensure.
4. Stop loading the data.
5. Rollover happens.

If you does not stop to load the data, rollover will not happen until WAL segment will beсome full, i.e until to rollover by a segment size.

Under low loads, filling of 1Gb segment can occur after a dozen of minutes or even after several hours, which causes a large lag of a CDC replication.

Issue Links

• links to: GitHub Pull Request #10448