[TEPHRA-270] Avoid transaction state cache refresh on co-procesor startup

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.14.0-incubating
• Component/s: core
• Assignee: Poorna Chandra
• Reporter: Poorna Chandra
• Created: 15/Dec/17 22:04
• Updated: 01/May/18 23:52
• Resolved: 01/May/18 23:52

Description

Transaction state cache, on startup, refreshes the transaction snapshot from HDFS. The transaction state cache startup is called during HBase co-processor startup. The refresh of the transaction snapshot can block, thus blocking the co-processor startup.

The subsequent transaction snapshot refreshes happen in the background. Also - there is no guarantee that a snapshot will be present during the refresh on startup. Hence it is okay not to refresh the snapshot during snapshot, but do it in background.

Issue Links

• links to: GitHub Pull Request #72