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  1. Data Management
  2. DM-20019

Fix pickling of String Fields

    Details

    • Type: Bug
    • Status: Done
    • Resolution: Done
    • Fix Version/s: None
    • Component/s: afw
    • Templates:
    • Story Points:
      2
    • Sprint:
      AP S19-6
    • Team:
      Alert Production

      Description

      While finishing DM-19616, I noticed a problem with the multiprocessing Pool and a schema that contained a String Field. I added a test to afw that reproduces this error, and I will fix it on this ticket.

      E           lsst.pex.exceptions.wrappers.LengthError: 
      E             File "src/table/FieldBase.cc", line 72, in lsst::afw::table::FieldBase<std::__cxx11::basic_string<char> >::FieldBase(int)
      E               Size must be provided when constructing a string field. {0}
      E           lsst::pex::exceptions::LengthError: 'Size must be provided when constructing a string field.'
      

      My guess is that I need to tweak the pybind11 py::pickle code in schema.cc, possibly special-casing the String FieldBase type.

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                • Assignee:
                  Parejkoj John Parejko
                  Reporter:
                  Parejkoj John Parejko
                  Reviewers:
                  Krzysztof Findeisen
                  Watchers:
                  Jim Bosch, John Parejko, John Swinbank, Krzysztof Findeisen
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                    Updated:
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