Throw KeyError when accessing field from struct with nonexistent key

[NV-jpt]

PR response to issue #8875

[shwina]

Thanks for the fix! Could you also please add a test in test_struct.py for the behaviour you are adding?

[codecov]

Codecov Report

Merging #8880 (b349d0f) into branch-21.10 (18f7c01) will decrease coverage by 0.06%.
The diff coverage is n/a.

❗ Current head b349d0f differs from pull request most recent head dca6999. Consider uploading reports for the commit dca6999 to get more accurate results

@@               Coverage Diff                @@
##           branch-21.10    #8880      +/-   ##
================================================
- Coverage         10.67%   10.61%   -0.07%     
================================================
  Files               110      116       +6     
  Lines             18271    19001     +730     
================================================
+ Hits               1951     2017      +66     
- Misses            16320    16984     +664     

Impacted Files	Coverage Δ
python/cudf/cudf/__init__.py	0.00% <ø> (ø)
python/cudf/cudf/core/__init__.py	0.00% <ø> (ø)
python/cudf/cudf/core/column/categorical.py	0.00% <ø> (ø)
python/cudf/cudf/core/column/column.py	0.00% <ø> (ø)
python/cudf/cudf/core/column/lists.py	0.00% <ø> (ø)
python/cudf/cudf/core/column/methods.py	0.00% <ø> (ø)
python/cudf/cudf/core/column/numerical.py	0.00% <ø> (ø)
python/cudf/cudf/core/column/string.py	0.00% <ø> (ø)
python/cudf/cudf/core/column/struct.py	0.00% <ø> (ø)
python/cudf/cudf/core/dataframe.py	0.00% <ø> (ø)
... and 81 more

---

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[shwina]

Thanks! This looks great -- just need a test or two in test_struct.py and should be good to go!

[shwina]

LGTM! Nice work, @NV-jpt

[NV-jpt]

Awesome!! Thank you for all the help @shwina & @beckernick !

[NV-jpt]

One of the checks was not successful (gpuCI/cudf/gpu/java — Build #429 failed in 44 min).

Is there something I can do to resolve this?

[shwina]

rerun tests

[shwina]

Doesn't look like an issue with this PR. Just reran tests -- let's see if it passes this time around.

[NV-jpt]

Thank you, @shwina! I could not figure out how to rerun them

[shwina]

Ah, I'm not sure if it's available to everyone, but the comment rerun tests (#8880 (comment)) triggers the rerun. Hopefully, this comment won't trigger a rerun...

[shwina]

Oh no, it did!

[beckernick]

@gpucibot merge

[beckernick]

This should unblock #8874