[jira] [Commented] (BEAM-539) Error when writing to the root of a GCS location

["Chamikara Jayalath (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/BEAM-539?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15991709#comment-15991709 ] 

Chamikara Jayalath commented on BEAM-539:
-----------------------------------------

Turns out, we already delete all temp files [1]. I was observing undeleted temp files due to GCS eventual consistency.

https://github.com/apache/beam/pull/2770 fixes other issues mentioned above.

[1] https://github.com/apache/beam/blob/master/sdks/python/apache_beam/io/fileio.py#L242

> Error when writing to the root of a GCS location
> ------------------------------------------------
>
>                 Key: BEAM-539
>                 URL: https://issues.apache.org/jira/browse/BEAM-539
>             Project: Beam
>          Issue Type: Bug
>          Components: sdk-py
>            Reporter: Ahmet Altay
>            Assignee: Chamikara Jayalath
>            Priority: Minor
>              Labels: newbie, starter
>             Fix For: First stable release
>
>
> 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"
>  }
> }



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