CTA Dev Meeting

Friday 20 Jan 2023, 15:00 → 16:30 Europe/Zurich

513/R-068 (CERN)

Michael Davis (CERN)

15:00 → 15:10 CTA Release Workflow

• Release procedure instructions

15:10 → 15:20 CTA Release Roadmap

See CTA Release Roadmap

Release 4.8.3-1

• Milestones link
• Release date: 18 Jan
• Pre-prod deployment date: 18 Jan
• Prod deployment date: 19 Jan
• Added counters for profiling high-rate DB queries (MR link)

Release 4.8.4-1

• Milestones link
• Release date: 23 Jan
• Pre-prod deployment date: 24 Jan
• Prod deployment date: 25 Jan
• Will include only the catalogue DB query optimisations resulting from the 4.8.3-1 analysis

Public Release

• Latest version available on public repo: v4.7.14-1, v5.7.14-1

Revised dates of the release 4.8.4-1:

• Code ready: 23 Jan
• Stress test: 23 Jan
• Pre-production: 24 Jan
• Production: 25 Jan (after discussing in Ops meeting)

15:20 → 15:30 CTA dev topics

Tape server querying DB at very high rate

• For details check #155 / #Ops-967
• Solution will be tagged as version v4.8.4-1/v5.8.4-1

stagerrm issues continued

• The following issue aggregates all stagerrm related issues: #269
• It presents them and includes a proposal for tackling the main problems.
• Proposal to be discussed.

Manage CI repositories with cta-release code

• For details check #262

Free stalled taking too long to transition to desired state

• For details check #Ops-972

CTA collaborating on MHVTL development/release

• [Michael:] Contacted with MHVTL owner.

"Needs discussion" topics

• Issues link

"Dev issue needed" topics

• Ops issues link

Tape server querying DB at very high rate

• Improvements by Joao and David should fix this.

stagerrm issues continued

• The proposal on #269 has been discussed and accepted.
• New tickets have been created for development, as well to tackle the dark data issue and *stagerrm* command naming.

Manage CI repositories with cta-release code

• For details check #262
• This was assigned to Jorge.

Free stalled taking too long to transition to desired state

• For details check #Ops-972
• A dev issue was created to use a timeout in the global lock acquisition by the tape server.
• In addition, we will investigate (by collecting statistics) why the lock duration is long.

CTA collaborating on MHVTL development/release

• Jorge will do a pull request with the *flush* related changes. A ticket will also be created to cover this process.

gRPC integration with CTA frontend

• Fons is working on it, based on the work that Jacek has developed

New table for physical library

• Vlado will review and contribute to the proposal on issue: #276

15:30 → 15:40 CTA dev board review

Objective

• Look at the active issues in our CTA dev board.
• Decide if they should be kept, removed, reassigned, prioritised, etc.

Review unlabelled issues

• Unlabelled issues list: link

Review "In progress" issues

• Full CTA board: link

Review specific topic

• Every week we review the issues of one topic.
• This week: "Scheduler" and "Object Store" labels

Usually, there has been no time to cover this part of the meeting.

 

The issues should be reviewed before each meeting.

15:40 → 15:50 AOB

Other

• Room 513/R-068 is booked every week, until the EOY, for the CTA dev meeting.