[OAK-2833] Refactor TarMK

• Type: Task
• Status: Resolved
• Priority: Major
• Resolution: Done
• Component/s: segment-tar
• Labels: technical_debt
• Assignee: Michael Dürig
• Reporter: Michael Dürig
• Created: 05/May/15 15:59
• Updated: 26/Sep/19 11:40
• Resolved: 06/Feb/18 21:36

Description

Container issue for refactoring the TarMK to make it more testable, maintainable, extensible and less entangled.

For example the segment format should be readable, writeable through standalone means so tests, tools and production code can share this code. Currently there is a lot of code duplication involved here.

Sub-Tasks

• Improved SegmentWriter: Closed
• Replace BackgroundThread with Scheduler: Closed
• Decouple SegmentBufferWriter from SegmentStore: Closed
• Clean up the FileStore constructor: Closed
• Move createSegmentWriter() from FileStore to SegmentTracker: Closed
• Refactor RecordWriter.write to always return a RecordId: Closed
• Don't pass the compaction map to FileStore.cleanup: Closed
• Break cyclic dependency of FileStore and SegmentTracker: Closed
• Implement FileStore.size through FileStore.approximateSize: Resolved
• Remove deprecated constructors from SegmentNodeStore: Resolved
• Store record offset as short: Resolved
• Refactor SegmentTracker: Closed
• Remove deprecated string cache: Closed
• Properly split the FileStore into read-only and r/w variants: Resolved
• Remove SegmentNodeStore.getSuperRoot(): Closed
• Move FileStore.ChangeDispatcher to TarRevisions: Closed