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[Joris Van den Bossche](https://issues.apache.org/jira/browse/ARROW-5568?focusedCommentId=16861790) / @jorisvandenbossche: > I have JSON data where the columnar (line-delimited) part is in a `data` subkey: Note that the `data` subpart is not line delimited,...
[Joris Van den Bossche](https://issues.apache.org/jira/browse/ARROW-5825?focusedCommentId=16878763) / @jorisvandenbossche: @gsakkis do you have a reproducible example? You need a parquet dataset with eg an invalid file that raises an error when reading the...
[George Sakkis](https://issues.apache.org/jira/browse/ARROW-5825?focusedCommentId=16878991) / @gsakkis: Yes, in my case it was ["Found files in an intermediate directory"](https://github.com/apache/arrow/blob/master/python/pyarrow/parquet.py#L835) two or three levels deep in the partitioned directory tree.
[Wes McKinney](https://issues.apache.org/jira/browse/ARROW-5825?focusedCommentId=16910684) / @wesm: PRs welcome – note that the C++ Datasets project is getting going so we should limit the amount of time invested in maintaining this existing code.
[Antoine Pitrou](https://issues.apache.org/jira/browse/ARROW-5825?focusedCommentId=17394060) / @pitrou: The offending code is still there. It should also be pretty easy to fix.
[Antoine Pitrou](https://issues.apache.org/jira/browse/ARROW-5825?focusedCommentId=17394061) / @pitrou: cc @jorisvandenbossche
[Joris Van den Bossche](https://issues.apache.org/jira/browse/ARROW-5825?focusedCommentId=17394099) / @jorisvandenbossche: Since this is in the legacy implementation, I would say it's no priority to fix. But if it's easy to fix, maybe we should...
[Antoine Pitrou](https://issues.apache.org/jira/browse/ARROW-5825?focusedCommentId=17394114) / @pitrou: It depends what the intent is. If we still want to wait for all futures (instead of exiting on the first error), you would use: ```python...
[Joris Van den Bossche](https://issues.apache.org/jira/browse/ARROW-5825?focusedCommentId=17394118) / @jorisvandenbossche: I _suppose_ erroring on first exception is fine, as there should be no errors at all in a normal (successful) call to this.
[Antoine Pitrou](https://issues.apache.org/jira/browse/ARROW-5825?focusedCommentId=17394121) / @pitrou: The distinction I was making was between waiting for all futures to finish or not.