[CASSANDRA-15755] Add a debug line informing of building summary during sstable open

• Type: Improvement
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 4.0-beta1, 4.0
• Component/s: Observability/Logging
• Change Category: Operability
• Complexity: Low Hanging Fruit
• Platform: All

Source Control Link

https://github.com/apache/cassandra/commit/6cf352ea9c0c114d998da7b3e2dc6b53609a925b

Test and Documentation Plan

Manual testing

• Assignee: Sumanth Pasupuleti
• Reporter: Sumanth Pasupuleti

Authors

Sumanth Pasupuleti

Reviewers

Dinesh Joshi

• Created: 23/Apr/20 15:35
• Updated: 15/May/20 08:53
• Resolved: 06/May/20 21:50

Description

We've had a situation where our backup-restore flow did not include summary.db component for a large file with a lot of keys. This caused Cassandra on the restored node to take a long time to boot (while it was building the summary).

The last message was about opening a few sstables. It would be nice to also include a debug line about building summary, which then operators can use to check if a missing summary file is expected.