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  1. Data Management
  2. DM-29069

statsControl.setNumIter(0) kills python/kernels

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      Description

      Obviously it's a dumb "just don't do that" kind of thing, but if you just

      import lsst.afw.math as afwMath
      		 
      sctrl = afwMath.StatisticsControl()
      		 
      sctrl.setNumIter(0)

      then you get a C++ assertion error, but things then propagate in a way that kills python/your kernel.

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          kannawad Arun Kannawadi added a comment -

          https://github.com/lsst/afw/tree/tickets/DM-29069

          I'm not sure why but the branch isn't showing up on Jira. There are two possible ways (in two different commits) of fixing it - either by checking the input parameter at the pybind11 layer and throwing an exception, or doing that within the C++ layer. It makes sense to reserve `assert` in a method to assert the method performed as excepted, rather than asserting that it received inputs as expected. So I'm for dropping the commit that throws the exception from pybind11.

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          kannawad Arun Kannawadi added a comment - https://github.com/lsst/afw/tree/tickets/DM-29069 I'm not sure why but the branch isn't showing up on Jira. There are two possible ways (in two different commits) of fixing it - either by checking the input parameter at the pybind11 layer and throwing an exception, or doing that within the C++ layer. It makes sense to reserve `assert` in a method to assert the method performed as excepted, rather than asserting that it received inputs as expected. So I'm for dropping the commit that throws the exception from pybind11.
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          kannawad Arun Kannawadi added a comment -

          Jenkins run: https://ci.lsst.codes/blue/organizations/jenkins/stack-os-matrix/detail/stack-os-matrix/34142/pipeline

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          kannawad Arun Kannawadi added a comment - Jenkins run: https://ci.lsst.codes/blue/organizations/jenkins/stack-os-matrix/detail/stack-os-matrix/34142/pipeline
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          kannawad Arun Kannawadi added a comment -

          Successful Jenkins run: https://ci.lsst.codes/blue/organizations/jenkins/stack-os-matrix/detail/stack-os-matrix/34146/pipeline

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          kannawad Arun Kannawadi added a comment - Successful Jenkins run: https://ci.lsst.codes/blue/organizations/jenkins/stack-os-matrix/detail/stack-os-matrix/34146/pipeline
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          mschmitz Morgan Schmitz added a comment -

          LGTM (once the commits are cleaned up)!

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          mschmitz Morgan Schmitz added a comment - LGTM (once the commits are cleaned up)!
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          kannawad Arun Kannawadi added a comment -

          Discarded the changes to `_statistics.cc` and merged.

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          kannawad Arun Kannawadi added a comment - Discarded the changes to `_statistics.cc` and merged.

            People

            Assignee:
            kannawad Arun Kannawadi
            Reporter:
            mfisherlevine Merlin Fisher-Levine
            Reviewers:
            Morgan Schmitz
            Watchers:
            Arun Kannawadi, Jim Bosch, Merlin Fisher-Levine, Morgan Schmitz
            Votes:
            0 Vote for this issue
            Watchers:
            4 Start watching this issue

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              Updated:
              Resolved:

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