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Robocorp Lab (4.20.18)

Bug fixes

  • Update to RCC v11.1.3
    • Reduces the number of parallel workers to reduce the file I/O load that seems to affect some Windows machines.
    • Now using Copy and rename pattern to block any termination in the middle of file writing from causing broken files.
      • Should fix the INIT_3_10 and INIT_4_10 errors that some users have been hitting hard.
    • v11 is now cleared from all old-style cache commands and logic
      • rcc env ... -commands removed and replaces by either rcc holotree ... or rcc config ... commands
      • Breaking command changes highlighted in RCC changelog
  • Lab startup checks improved > removed redundant initial checks

Known issues

  • Having `defaults '-channel in conda.yaml will cause errors; now is the time to get rid of that.
    • Parts of the Lab basement are no longer shipped via defaults -channel, causing weird errors.
    • Templates and robots in Robocorp Portal have been updated since February, but basically, you only need to remove that one line.
    • Simplest conda.yaml example is:
channels:
  - conda-forge
dependencies:
  - python=3.7.5
  - pip=20.1
  - pip:
      - rpaframework==11.4.0
  • "Lab is unresponsive" on some machines.
    • While we still have not been able to repro this on our side, we got some profiler data that helped us get further, thanks to some accommodating community members.
    • Patch v4.20.18 now avoids most of the failure cases we have seen in a way that breaks the failure cycles and resumes better.
    • Patch v4.20.18 also reduces the number of parallel file actions, which seems to be the triggering aspect.
    • Big dependencies still take time, and at the moment, pip for example does not support any parallel actions, so machine utilization is really low during pip steps.
    • We have a couple more ideas in the works still on this matter.
September 23, 2021