[OAK-8604] Keep the last journal entry in metadata

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.18.0
• Component/s: segment-azure
• Assignee: Tomek Rękawek
• Reporter: Tomek Rękawek
• Created: 06/Sep/19 21:03
• Updated: 30/Sep/19 07:35
• Resolved: 06/Sep/19 21:12

Description

In the oak-segment-azure, reading the whole journal may be a time consuming task, as the blob appends are a bit slow to read. We may try to keep the most recent journal entry as a metadata and fall back to the actual blob contents if the JournalReader.nextLine() is invoked subsequently.

Issue Links

• relates to: OAK-8605 Read the journal lazily in the SplitPersistence