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The dataset generation failed
Error code:   DatasetGenerationError
Exception:    ArrowNotImplementedError
Message:      Cannot write struct type 'flags' with no child field to Parquet. Consider adding a dummy child field.
Traceback:    Traceback (most recent call last):
                File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/builder.py", line 1870, in _prepare_split_single
                  writer.write_table(table)
                File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/arrow_writer.py", line 620, in write_table
                  self._build_writer(inferred_schema=pa_table.schema)
                File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/arrow_writer.py", line 441, in _build_writer
                  self.pa_writer = self._WRITER_CLASS(self.stream, schema)
                File "/src/services/worker/.venv/lib/python3.9/site-packages/pyarrow/parquet/core.py", line 1010, in __init__
                  self.writer = _parquet.ParquetWriter(
                File "pyarrow/_parquet.pyx", line 2157, in pyarrow._parquet.ParquetWriter.__cinit__
                File "pyarrow/error.pxi", line 154, in pyarrow.lib.pyarrow_internal_check_status
                File "pyarrow/error.pxi", line 91, in pyarrow.lib.check_status
              pyarrow.lib.ArrowNotImplementedError: Cannot write struct type 'flags' with no child field to Parquet. Consider adding a dummy child field.
              
              During handling of the above exception, another exception occurred:
              
              Traceback (most recent call last):
                File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/builder.py", line 1886, in _prepare_split_single
                  num_examples, num_bytes = writer.finalize()
                File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/arrow_writer.py", line 639, in finalize
                  self._build_writer(self.schema)
                File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/arrow_writer.py", line 441, in _build_writer
                  self.pa_writer = self._WRITER_CLASS(self.stream, schema)
                File "/src/services/worker/.venv/lib/python3.9/site-packages/pyarrow/parquet/core.py", line 1010, in __init__
                  self.writer = _parquet.ParquetWriter(
                File "pyarrow/_parquet.pyx", line 2157, in pyarrow._parquet.ParquetWriter.__cinit__
                File "pyarrow/error.pxi", line 154, in pyarrow.lib.pyarrow_internal_check_status
                File "pyarrow/error.pxi", line 91, in pyarrow.lib.check_status
              pyarrow.lib.ArrowNotImplementedError: Cannot write struct type 'flags' with no child field to Parquet. Consider adding a dummy child field.
              
              The above exception was the direct cause of the following exception:
              
              Traceback (most recent call last):
                File "/src/services/worker/src/worker/job_runners/config/parquet_and_info.py", line 1438, in compute_config_parquet_and_info_response
                  parquet_operations = convert_to_parquet(builder)
                File "/src/services/worker/src/worker/job_runners/config/parquet_and_info.py", line 1050, in convert_to_parquet
                  builder.download_and_prepare(
                File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/builder.py", line 924, in download_and_prepare
                  self._download_and_prepare(
                File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/builder.py", line 1000, in _download_and_prepare
                  self._prepare_split(split_generator, **prepare_split_kwargs)
                File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/builder.py", line 1741, in _prepare_split
                  for job_id, done, content in self._prepare_split_single(
                File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/builder.py", line 1897, in _prepare_split_single
                  raise DatasetGenerationError("An error occurred while generating the dataset") from e
              datasets.exceptions.DatasetGenerationError: An error occurred while generating the dataset

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version
string
flags
dict
shapes
list
lineColor
sequence
fillColor
sequence
imagePath
string
imageData
string
imageHeight
int64
imageWidth
int64
3.16.0
{}
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[ 0, 255, 0, 128 ]
[ 255, 0, 0, 128 ]
000001.jpg
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323
416
3.16.0
{}
[ { "label": "ship-1", "line_color": null, "fill_color": null, "points": [ [ 211.51439299123905, 162.70337922403004 ], [ 215.01877346683352, 158.69837296620776 ], [ 226.65832290362954, 157.07133917396746 ], [ ...
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000002.jpg
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355
501
3.16.0
{}
[ { "label": "ship-1", "line_color": null, "fill_color": null, "points": [ [ 84.33734939759036, 181.9277108433735 ], [ 89.4578313253012, 176.80722891566265 ], [ 96.68674698795179, 178.01204819277106 ], [ ...
[ 0, 255, 0, 128 ]
[ 255, 0, 0, 128 ]
000003.jpg
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403
500
3.16.0
{}
[{"label":"ship-1","line_color":null,"fill_color":null,"points":[[165.91478696741854,141.35338345864(...TRUNCATED)
[ 0, 255, 0, 128 ]
[ 255, 0, 0, 128 ]
000004.jpg
"/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAgGBgcGBQgHBwcJCQgKDBQNDAsLDBkSEw8UHRofHh0aHBwgJC4nICIsIxwcKDcpLDA(...TRUNCATED)
332
502
3.16.0
{}
[{"label":"ship-1","line_color":null,"fill_color":null,"points":[[170.0956937799043,199.521531100478(...TRUNCATED)
[ 0, 255, 0, 128 ]
[ 255, 0, 0, 128 ]
000005.jpg
"/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAgGBgcGBQgHBwcJCQgKDBQNDAsLDBkSEw8UHRofHh0aHBwgJC4nICIsIxwcKDcpLDA(...TRUNCATED)
317
420
3.16.0
{}
[{"label":"ship-1","line_color":null,"fill_color":null,"points":[[101.8878504672897,168.280373831775(...TRUNCATED)
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000006.jpg
"/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAgGBgcGBQgHBwcJCQgKDBQNDAsLDBkSEw8UHRofHh0aHBwgJC4nICIsIxwcKDcpLDA(...TRUNCATED)
357
501
3.16.0
{}
[{"label":"ship-1","line_color":null,"fill_color":null,"points":[[300.82312925170066,206.80272108843(...TRUNCATED)
[ 0, 255, 0, 128 ]
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000007.jpg
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322
417
3.16.0
{}
[{"label":"ship-1","line_color":null,"fill_color":null,"points":[[196.31788079470198,266.55629139072(...TRUNCATED)
[ 0, 255, 0, 128 ]
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000008.jpg
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313
404
3.16.0
{}
[{"label":"ship-1","line_color":null,"fill_color":null,"points":[[139.85714285714286,98.376623376623(...TRUNCATED)
[ 0, 255, 0, 128 ]
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000009.jpg
"/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAgGBgcGBQgHBwcJCQgKDBQNDAsLDBkSEw8UHRofHh0aHBwgJC4nICIsIxwcKDcpLDA(...TRUNCATED)
307
401
3.16.0
{}
[{"label":"ship-1","line_color":null,"fill_color":null,"points":[[238.24657534246575,123.63013698630(...TRUNCATED)
[ 0, 255, 0, 128 ]
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000010.jpg
"/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAgGBgcGBQgHBwcJCQgKDBQNDAsLDBkSEw8UHRofHh0aHBwgJC4nICIsIxwcKDcpLDA(...TRUNCATED)
324
441
End of preview.

To cite the dataset please reference it as

@INPROCEEDINGS{8124934,
  author={Li, Jianwei and Qu, Changwen and Shao, Jiaqi},
  booktitle={2017 SAR in Big Data Era: Models, Methods and Applications (BIGSARDATA)}, 
  title={Ship detection in SAR images based on an improved faster R-CNN}, 
  year={2017},
  volume={},
  number={},
  pages={1-6},
  keywords={Marine vehicles;Feature extraction;Synthetic aperture radar;Proposals;Detectors;Image resolution;Deep learning;SAR;ship detection;Faster R-CNN},
  doi={10.1109/BIGSARDATA.2017.8124934}}
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