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https://issues.apache.org/jira/browse/ARROW-601?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15922985#comment-15922985
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Wes McKinney commented on ARROW-601:
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[~tebeka] if I had to guess, the segfault is because of the struct type
{code}
optional group a-group {
optional boolean bool;
optional int64 another;
}
{code}
I don't think we have any tests yet for structs (PARQUET-911).
> Some logical types not supported when loading Parquet
> -----------------------------------------------------
>
> Key: ARROW-601
> URL: https://issues.apache.org/jira/browse/ARROW-601
> Project: Apache Arrow
> Issue Type: Bug
> Components: Python
> Affects Versions: 0.2.0
> Reporter: Saul Shanabrook
> Assignee: Miki Tebeka
> Labels: parquet
> Fix For: 0.3.0
>
> Attachments: t.parquet
>
>
> When I try to read a parquet file with some logical types in it, pyarrow says
> they are not supported:
> {code}
> table = pq.read_table('t.parquet')
> ---------------------------------------------------------------------------
> ArrowException Traceback (most recent call last)
> <ipython-input-14-b7190e66bcb5> in <module>()
> ----> 1 table = pq.read_table('parquet/t')
> /opt/conda/lib/python3.5/site-packages/pyarrow/parquet.py in
> read_table(source, columns, nthreads, metadata)
> 113
> 114 pf = ParquetFile(source, metadata=metadata)
> --> 115 return pf.read(columns=columns, nthreads=nthreads)
> 116
> 117
> /opt/conda/lib/python3.5/site-packages/pyarrow/parquet.py in read(self,
> nrows, columns, nthreads)
> 78
> 79 return self.reader.read(column_indices=column_indices,
> ---> 80 nthreads=nthreads)
> 81
> 82
> /opt/conda/lib/python3.5/site-packages/pyarrow/_parquet.pyx in
> pyarrow._parquet.ParquetReader.read
> (/feedstock_root/build_artefacts/pyarrow_1488133203047/work/arrow-f6924ad83bc95741f003830892ad4815ca3b70fd/python/build/temp.linux-x86_64-3.5/_parquet.cxx:7706)()
> /opt/conda/lib/python3.5/site-packages/pyarrow/error.pyx in
> pyarrow.error.check_status
> (/feedstock_root/build_artefacts/pyarrow_1488133203047/work/arrow-f6924ad83bc95741f003830892ad4815ca3b70fd/python/build/temp.linux-x86_64-3.5/error.cxx:1197)()
> ArrowException: NotImplemented: Unhandled logical type for int32
> {code}
> This is the schema of the parquet file (see attached):
> {code}
> optional group root {
> optional int64 instant (TIMESTAMP_MILLIS);
> optional int32 time (TIME_MILLIS);
> optional double a-double;
> optional int64 another-int;
> optional binary a-string (UTF8);
> optional group list (LIST) {
> repeated group list {
> optional int64 element;
> }
> }
> optional boolean a-boolean;
> optional group a-group {
> optional boolean bool;
> optional int64 another;
> }
> optional int64 an-int;
> optional int32 a-date (DATE);
> }
> {code}
> I assume this is because not pyarrow doesn't support loading all the parquet
> logical types yet. Is there someplace I can look (even if it's not
> documented, just in the codebase), where I can find what types are supported
> currently and which are not?
>
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