[BEAM-539] Error when writing to the root of a GCS location

• Type: Bug
• Status: Resolved
• Priority: P3
• Resolution: Fixed
• Fix Version/s: 2.0.0
• Component/s: sdk-py-core
• Labels: newbie starter
• Assignee: Chamikara Madhusanka Jayalath
• Reporter: Ahmet Altay
• Created: 08/Aug/16 22:06
• Updated: 16/May/20 13:19
• Resolved: 02/May/17 21:04

Description

User issue: http://stackoverflow.com/questions/38811152/google-dataflow-python-pipeline-write-failure

Reproduction: use a TextFileSink and set output locations as gs://mybucket and it fails. Change it to gs://mybucket/ and it works.

The final output path is generated here:
https://github.com/apache/incubator-beam/blob/python-sdk/sdks/python/apache_beam/io/fileio.py#L495

And this seemingly works in the Java SDK.

Stack:

File "/usr/local/lib/python2.7/dist-packages/apache_beam/io/iobase.py", line 1058, in finish_bundle
yield window.TimestampedValue(self.writer.close(), window.MAX_TIMESTAMP)
File "/usr/local/lib/python2.7/dist-packages/apache_beam/io/fileio.py", line 601, in close
self.sink.close(self.temp_handle)
File "/usr/local/lib/python2.7/dist-packages/apache_beam/io/fileio.py", line 687, in close
file_handle.close()
File "/usr/local/lib/python2.7/dist-packages/apache_beam/io/gcsio.py", line 617, in close
self._flush_write_buffer()
File "/usr/local/lib/python2.7/dist-packages/apache_beam/io/gcsio.py", line 647, in _flush_write_buffer
raise self.upload_thread.last_error # pylint: disable=raising-bad-type
HttpError: HttpError accessing <https://www.googleapis.com/resumable/upload/storage/v1/b/mybucket-temp-2016-08-08_21-29-39/o?uploadType=resumable&alt=json&name=f1cd7fe2-cf96-4d1d-bb5b-a6252cbcd342>: response: <

{'status': '404', 'alternate-protocol': '443:quic', 'content-length': '165', 'vary': 'Origin, X-Origin', 'server': 'UploadServer', 'x-guploader-uploadid': 'AEnB2Uq6ZGb_CsrMVxozv6aL48k4OMMiRgYVeVGmJrM-sMQWRGeGMkesOQg5F0W7HZuaqTBog_d4ml-DlIars_ZvJTejdfcbAUr4gswZWVieq82ufc3WR2g', 'date': 'Mon, 08 Aug 2016 21:29:46 GMT', 'alt-svc': 'quic=":443"; ma=2592000; v="36,35,34,33,32,31,30"', 'content-type': 'application/json; charset=UTF-8'}

>, content <{
"error": {
"errors": [

{ "domain": "global", "reason": "notFound", "message": "Not Found" }

],
"code": 404,
"message": "Not Found"
}
}

Issue Links

• links to: GitHub Pull Request #2770