CTA Dev Meeting

Friday 17 Feb 2023, 15:00 → 16:30 Europe/Zurich

513/R-068 (CERN)

Michael Davis (CERN)

15:00 → 15:10 dCache Integration

Archive metadata discussion

CI tests for CTA - dCache integration

• For details check #304.

AOBs

Archive metadata discussion

• Julien will formalise the discussed changes.
  • Scheduling hints, colocation hints, levels 0-3, max 1KB, etc...
• We will do another iteration of the document.
  • We will be discussing by email. Only schedule meeting if needed.

CI tests for CTA - dCache integration

• Jacek will work on a container to dCache, to integrate in our CI and run nightly.
  • If needed the CTA team will give support.

15:10 → 15:20 CTA Release Roadmap

See CTA Release Roadmap

Release 4.8.5-0.rc1

• Milestones link
• Release date: 3 Feb
• Pre-prod deployment date: 3 Feb
• Prod deployment date: NOT
• This will be a large release, with many new features/fixes added since December.
• Test release, to be deployed only on pre-production.

Release 4.8.5-1

• Milestones link
• Release date: TBD
• Pre-prod deployment date: TBD
• Prod deployment date: TBD
• This will be a large release, with many new features/fixes added since December.
• It is similar to 4.8.5-1, with the addition of the most recent commits.

Public Release

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

Release 4.8.5-1

• We will decide on monday if we release it or not, based on the expected work from issue https://gitlab.cern.ch/cta/operations/-/issues/994.
• The missing pre-production tests from 4.8.5-0.rc1 are non-blocking. The tests with broken tapes can be performed after 4.8.5-1 is released and deployed. Any errors can be fixed later in 4.8.6-1.

 

15:20 → 15:30 CTA dev topics

gRPC calls to EOS5 failing

• For details check #294

Partial change of reportJobsBatchTransferred logic"

• For details check #240

Make RMC maxRqstAttempts variable configurable

• For details check #302
• CTA community link

Keep cta-taped alive if at least one drive handler is alive

• For details check #303
• CTA community link

Remove auto-generated cpp/hpp files from the CTA repo

• [Jorge] Review .gitignore

Solution to count and monitor log events in CTA

• Discuss solution presented in #266

"Needs discussion" topics

• Issues link

"Dev issue needed" topics

• Ops issues link

gRPC calls to EOS5 failing

• This was reported as being of low priority.
• We will ask them for a dump of the dependencies, and evaluate from there what to do (ignore or fix it in our side, since we are also using more and more gRPC).

Partial change of reportJobsBatchTransferred logic

• We will keep this as a low priority, unless it starts affecting production.

Make RMC maxRqstAttempts variable configurable

• Keep as low priority, unless the experiments explicitly ask to work on it.

Keep cta-taped alive if at least one drive handler is alive

• This is not a priority for CTA at CERN.
• The first approach should be to ask RAL to try deploying the tape server in two separate containers. This should allow for a much better decoupling than having 2 drives in 1 tape server, without the need for development effort.
  • If this works, check with other members of the community if they can do the same.
  • If so (and no one is using the same process for multiple drives), remove the possibility of having multiple drives per tape server. This should not impact CERN because we already abide by this rule.

Remove auto-generated cpp/hpp files from the CTA repo

• Jorge will remove the unnecessary auto-generated files, as well as IDE-specific directories from .gitignore.

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

15:40 → 15:50 AOB

Other

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