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The dataset preview is not available for this split.
Cannot load the dataset split (in streaming mode) to extract the first rows.
Error code:   StreamingRowsError
Exception:    ValueError
Message:      Cannot seek streaming HTTP file
Traceback:    Traceback (most recent call last):
                File "/src/workers/datasets_based/src/datasets_based/workers/", line 485, in compute_first_rows_response
                  rows = get_rows(
                File "/src/workers/datasets_based/src/datasets_based/workers/", line 120, in decorator
                  return func(*args, **kwargs)
                File "/src/workers/datasets_based/src/datasets_based/workers/", line 164, in get_rows
                  ds = load_dataset(
                File "/src/workers/datasets_based/.venv/lib/python3.9/site-packages/datasets/", line 1751, in load_dataset
                  return builder_instance.as_streaming_dataset(split=split)
                File "/src/workers/datasets_based/.venv/lib/python3.9/site-packages/datasets/", line 1206, in as_streaming_dataset
                  splits_generators = { sg for sg in self._split_generators(dl_manager)}
                File "/tmp/modules-cache/datasets_modules/datasets/code_x_glue_cc_code_to_code_trans/86dd57d2b1e88c6e589646133b76f2fef9d56c82e933d7f276e8a5b60ab18c34/", line 98, in _split_generators
                  return self.child._split_generators(dl_manager=dl_manager)
                File "/tmp/modules-cache/datasets_modules/datasets/code_x_glue_cc_code_to_code_trans/86dd57d2b1e88c6e589646133b76f2fef9d56c82e933d7f276e8a5b60ab18c34/", line 50, in _split_generators
                  downloaded_files[k] = dl_manager.download_and_extract(v)
                File "/src/workers/datasets_based/.venv/lib/python3.9/site-packages/datasets/download/", line 1074, in download_and_extract
                  return self.extract(
                File "/src/workers/datasets_based/.venv/lib/python3.9/site-packages/datasets/download/", line 1026, in extract
                  urlpaths = map_nested(self._extract, url_or_urls, map_tuple=True)
                File "/src/workers/datasets_based/.venv/lib/python3.9/site-packages/datasets/utils/", line 444, in map_nested
                  mapped = [
                File "/src/workers/datasets_based/.venv/lib/python3.9/site-packages/datasets/utils/", line 445, in <listcomp>
                  _single_map_nested((function, obj, types, None, True, None))
                File "/src/workers/datasets_based/.venv/lib/python3.9/site-packages/datasets/utils/", line 346, in _single_map_nested
                  return function(data_struct)
                File "/src/workers/datasets_based/.venv/lib/python3.9/site-packages/datasets/download/", line 1031, in _extract
                  protocol = _get_extraction_protocol(urlpath, use_auth_token=self.download_config.use_auth_token)
                File "/src/workers/datasets_based/.venv/lib/python3.9/site-packages/datasets/download/", line 434, in _get_extraction_protocol
                  return _get_extraction_protocol_with_magic_number(f)
                File "/src/workers/datasets_based/.venv/lib/python3.9/site-packages/datasets/download/", line 401, in _get_extraction_protocol_with_magic_number
                File "/src/workers/datasets_based/.venv/lib/python3.9/site-packages/fsspec/implementations/", line 737, in seek
                  raise ValueError("Cannot seek streaming HTTP file")
              ValueError: Cannot seek streaming HTTP file

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Dataset Card for "code_x_glue_cc_code_to_code_trans"

Dataset Summary

CodeXGLUE code-to-code-trans dataset, available at

The dataset is collected from several public repos, including Lucene(, POI(, JGit( and Antlr( We collect both the Java and C# versions of the codes and find the parallel functions. After removing duplicates and functions with the empty body, we split the whole dataset into training, validation and test sets.

Supported Tasks and Leaderboards

  • machine-translation: The dataset can be used to train a model for translating code in Java to C# and vice versa.


  • Java programming language
  • C# programming language

Dataset Structure

Data Instances

An example of 'validation' looks as follows.

    "cs": "public DVRecord(RecordInputStream in1){_option_flags = in1.ReadInt();_promptTitle = ReadUnicodeString(in1);_errorTitle = ReadUnicodeString(in1);_promptText = ReadUnicodeString(in1);_errorText = ReadUnicodeString(in1);int field_size_first_formula = in1.ReadUShort();_not_used_1 = in1.ReadShort();_formula1 = NPOI.SS.Formula.Formula.Read(field_size_first_formula, in1);int field_size_sec_formula = in1.ReadUShort();_not_used_2 = in1.ReadShort();_formula2 = NPOI.SS.Formula.Formula.Read(field_size_sec_formula, in1);_regions = new CellRangeAddressList(in1);}\n", 
    "id": 0, 
    "java": "public DVRecord(RecordInputStream in) {_option_flags = in.readInt();_promptTitle = readUnicodeString(in);_errorTitle = readUnicodeString(in);_promptText = readUnicodeString(in);_errorText = readUnicodeString(in);int field_size_first_formula = in.readUShort();_not_used_1 = in.readShort();_formula1 =, in);int field_size_sec_formula = in.readUShort();_not_used_2 = in.readShort();_formula2 =, in);_regions = new CellRangeAddressList(in);}\n"

Data Fields

In the following each data field in go is explained for each config. The data fields are the same among all splits.


field name type description
id int32 Index of the sample
java string The java version of the code
cs string The C# version of the code

Data Splits

name train validation test
default 10300 500 1000

Dataset Creation

Curation Rationale

[More Information Needed]

Source Data

Initial Data Collection and Normalization

[More Information Needed]

Who are the source language producers?

[More Information Needed]


Annotation process

[More Information Needed]

Who are the annotators?

[More Information Needed]

Personal and Sensitive Information

[More Information Needed]

Considerations for Using the Data

Social Impact of Dataset

[More Information Needed]

Discussion of Biases

[More Information Needed]

Other Known Limitations

[More Information Needed]

Additional Information

Dataset Curators,

Licensing Information

Computational Use of Data Agreement (C-UDA) License.

Citation Information

         title={CodeXGLUE: A Benchmark Dataset and Open Challenge for Code Intelligence},


Thanks to @madlag (and partly also @ncoop57) for adding this dataset.

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