Summary

Speed up VOB tag lookups in update_from_remote.

Review Request #15150 — Created July 3, 2026 and submitted July 29, 2026, 8:17 a.m.

Information

Owner

david

Repository

RBTools

Branch

master

Bugs

Depends On

Reviewers

Groups

rbtools

People

Description

ClearCaseRepositoryInfo.update_from_remote resolved local VOB tags by
running "cleartool lsvob -s -family <uuid> -region <region>" once for
every combination of configured VOB UUID and registry region. On
installations with many regions and VOBs this is hundreds of
serialized cleartool invocations on every rbt run, which is slow.

It now lists all VOBs in each region once with
cleartool lsvob -l -region <region> and matches them to the configured
UUIDs by parsing the family UUID out of the output. This scales with the
number of regions instead of regions * VOBs.

Testing Done

Ran unit tests.

Commits

Summary	ID
Speed up VOB tag lookups in update_from_remote. `ClearCaseRepositoryInfo.update_from_remote` resolved local VOB tags by running `cleartool lsvob -s -family <uuid> -region <region>` once for every combination of configured VOB UUID and registry region. On installations with many regions and VOBs this is hundreds of serialized cleartool invocations on every rbt run, which is slow. It now lists all VOBs in each region once with `cleartool lsvob -l -region <region>` and matches them to the configured UUIDs by parsing the family UUID out of the output. This scales with the number of regions instead of regions * VOBs. Testing Done: - Ran unit tests.	tlvlkuvtozswutllmkpszrykxmrzvkrn

Summary

Speed up VOB tag lookups in update_from_remote.

`ClearCaseRepositoryInfo.update_from_remote` resolved local VOB tags by running `cleartool lsvob -s -family <uuid> -region <region>` once for every combination of configured VOB UUID and registry region. On installations with many regions and VOBs this is hundreds of serialized cleartool invocations on every rbt run, which is slow. It now lists all VOBs in each region once with `cleartool lsvob -l -region <region>` and matches them to the configured UUIDs by parsing the family UUID out of the output. This scales with the number of regions instead of regions * VOBs. Testing Done: - Ran unit tests.

tlvlkuvtozswutllmkpszrykxmrzvkrn

Issues

Description	From	Last Updated
If you omit this, it should iterate through lines, streaming it in, instead of gathering them all up at once. …	chipx86	July 7, 2026, 8:53 a.m.
This should probably be typed str \| None.	chipx86	July 7, 2026, 8:49 a.m.
You could do line.rsplit(' ', 1)[-1] to simplify what it needs to do.	chipx86	July 7, 2026, 8:49 a.m.
Small thing, but can we split with a max split count?	chipx86	July 29, 2026, 8:13 a.m.

flake8 passed.

JSHint passed.

rbtools/clients/clearcase.py (Diff revision 1)

The issue has been resolved. Show all issues

If you omit this, it should iterate through lines, streaming it in, instead of gathering them all up at once. This would be less to keep in memory as we process.

rbtools/clients/clearcase.py (Diff revision 1)
The issue has been resolved. Show all issues
```
This should probably be typed str | None.
```
rbtools/clients/clearcase.py (Diff revision 1)
The issue has been resolved. Show all issues
```
You could do line.rsplit(' ', 1)[-1] to simplify what it needs to do.
```

Commits:

	Summary	ID
	Speed up VOB tag lookups in update_from_remote. `ClearCaseRepositoryInfo.update_from_remote` resolved local VOB tags by running "cleartool lsvob -s -family <uuid> -region <region>" once for every combination of configured VOB UUID and registry region. On installations with many regions and VOBs this is hundreds of serialized cleartool invocations on every rbt run, which is slow. It now lists all VOBs in each region once with "cleartool lsvob -l -region <region>" and matches them to the configured UUIDs by parsing the family UUID out of the output. This scales with the number of regions instead of regions * VOBs. Testing Done: - Ran unit tests.	tlvlkuvtozswutllmkpszrykxmrzvkrn
	Speed up VOB tag lookups in update_from_remote. `ClearCaseRepositoryInfo.update_from_remote` resolved local VOB tags by running `cleartool lsvob -s -family <uuid> -region <region>` once for every combination of configured VOB UUID and registry region. On installations with many regions and VOBs this is hundreds of serialized cleartool invocations on every rbt run, which is slow. It now lists all VOBs in each region once with `cleartool lsvob -l -region <region>` and matches them to the configured UUIDs by parsing the family UUID out of the output. This scales with the number of regions instead of regions * VOBs. Testing Done: - Ran unit tests.	tlvlkuvtozswutllmkpszrykxmrzvkrn

Diff:

Revision 2 (+116 -84)

Show changes

	rbtools/clients/clearcase.py
	rbtools/clients/tests/test_clearcase.py

Checks run (2 succeeded)

flake8 passed.

JSHint passed.

Ship it!

rbtools/clients/clearcase.py (Diff revision 2)
The issue has been resolved. Show all issues
```
Small thing, but can we split with a max split count?
```

Status:: Completed
Change Summary:: Pushed to master (b9941698)