[OAK-6909] FileStore.compact does not persist compacted head to journal

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.7.11, 1.8.0
• Component/s: segment-tar
• Labels: compaction gc
• Assignee: Michael Dürig
• Reporter: Michael Dürig
• Created: 06/Nov/17 16:32
• Updated: 13/Nov/17 13:55
• Resolved: 06/Nov/17 17:06

Description

When FileStore.compact() returns the journal.log does not necessarily contain the head created by the compactor. This can lead to problems downstream like e.g. in OAK-6894 where the compactor tool wrote the wrong (i.e. uncompacted) head to the journal.log.

Proposed fix is to call on of the FileStore.flush() methods after compaction and add a test case that verifies the journal.log contains the correct head state.

Issue Links

• blocks: OAK-6886 OffRC always logs 0 for the number of compacted nodes in gc.log