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From "Samuli Holopainen (JIRA)" <j...@apache.org>
Subject [jira] [Created] (BEAM-1874) Google Cloud Storage TextIO read fails with gz-files having Content-Encoding: gzip header
Date Tue, 04 Apr 2017 07:57:41 GMT
Samuli Holopainen created BEAM-1874:
---------------------------------------

             Summary: Google Cloud Storage TextIO read fails with gz-files having Content-Encoding:
gzip header
                 Key: BEAM-1874
                 URL: https://issues.apache.org/jira/browse/BEAM-1874
             Project: Beam
          Issue Type: Bug
          Components: sdk-py
    Affects Versions: 0.6.0
            Reporter: Samuli Holopainen
            Assignee: Ahmet Altay


We have gzipped text files in Google Cloud Storage that have the following metadata headers
set:

Content-Encoding: gzip
Content-Type: application/octet-stream

Trying to read these with apache_beam.io.ReadFromText yields the following error:

ERROR:root:Exception while fetching 341565 bytes from position 0 of gs://test-sammio-bigquery/test/prod_sammio_datalayers_all-3-2017-03-01-00-05-25-c72fa25a-5d8a-4801-a0b4-54b58c4723ce.gz:
Cannot have start index greater than total size
Traceback (most recent call last):
  File "/Users/samuli.holopainen/miniconda2/envs/python-dataflow/lib/python2.7/site-packages/apache_beam/io/gcp/gcsio.py",
line 585, in _fetch_to_queue
    value = func(*args)
  File "/Users/samuli.holopainen/miniconda2/envs/python-dataflow/lib/python2.7/site-packages/apache_beam/io/gcp/gcsio.py",
line 610, in _get_segment
    downloader.GetRange(start, end)
  File "/Users/samuli.holopainen/miniconda2/envs/python-dataflow/lib/python2.7/site-packages/apitools/base/py/transfer.py",
line 477, in GetRange
    progress, end_byte = self.__NormalizeStartEnd(start, end)
  File "/Users/samuli.holopainen/miniconda2/envs/python-dataflow/lib/python2.7/site-packages/apitools/base/py/transfer.py",
line 340, in __NormalizeStartEnd
    'Cannot have start index greater than total size')
TransferInvalidError: Cannot have start index greater than total size

WARNING:root:Task failed: Traceback (most recent call last):
  File "/Users/samuli.holopainen/miniconda2/envs/python-dataflow/lib/python2.7/site-packages/apache_beam/runners/direct/executor.py",
line 300, in __call__
    result = evaluator.finish_bundle()
  File "/Users/samuli.holopainen/miniconda2/envs/python-dataflow/lib/python2.7/site-packages/apache_beam/runners/direct/transform_evaluator.py",
line 206, in finish_bundle
    bundles = _read_values_to_bundles(reader)
  File "/Users/samuli.holopainen/miniconda2/envs/python-dataflow/lib/python2.7/site-packages/apache_beam/runners/direct/transform_evaluator.py",
line 196, in _read_values_to_bundles
    read_result = [GlobalWindows.windowed_value(e) for e in reader]
  File "/Users/samuli.holopainen/miniconda2/envs/python-dataflow/lib/python2.7/site-packages/apache_beam/io/concat_source.py",
line 79, in read
    range_tracker.sub_range_tracker(source_ix)):
  File "/Users/samuli.holopainen/miniconda2/envs/python-dataflow/lib/python2.7/site-packages/apache_beam/io/textio.py",
line 155, in read_records
    read_buffer)
  File "/Users/samuli.holopainen/miniconda2/envs/python-dataflow/lib/python2.7/site-packages/apache_beam/io/textio.py",
line 245, in _read_record
    sep_bounds = self._find_separator_bounds(file_to_read, read_buffer)
  File "/Users/samuli.holopainen/miniconda2/envs/python-dataflow/lib/python2.7/site-packages/apache_beam/io/textio.py",
line 190, in _find_separator_bounds
    file_to_read, read_buffer, current_pos + 1):
  File "/Users/samuli.holopainen/miniconda2/envs/python-dataflow/lib/python2.7/site-packages/apache_beam/io/textio.py",
line 212, in _try_to_ensure_num_bytes_in_buffer
    read_data = file_to_read.read(self._buffer_size)
  File "/Users/samuli.holopainen/miniconda2/envs/python-dataflow/lib/python2.7/site-packages/apache_beam/io/fileio.py",
line 460, in read
    self._fetch_to_internal_buffer(num_bytes)
  File "/Users/samuli.holopainen/miniconda2/envs/python-dataflow/lib/python2.7/site-packages/apache_beam/io/fileio.py",
line 420, in _fetch_to_internal_buffer
    buf = self._file.read(self._read_size)
  File "/Users/samuli.holopainen/miniconda2/envs/python-dataflow/lib/python2.7/site-packages/apache_beam/io/gcp/gcsio.py",
line 472, in read
    return self._read_inner(size=size, readline=False)
  File "/Users/samuli.holopainen/miniconda2/envs/python-dataflow/lib/python2.7/site-packages/apache_beam/io/gcp/gcsio.py",
line 516, in _read_inner
    self._fetch_next_if_buffer_exhausted()
  File "/Users/samuli.holopainen/miniconda2/envs/python-dataflow/lib/python2.7/site-packages/apache_beam/io/gcp/gcsio.py",
line 577, in _fetch_next_if_buffer_exhausted
    raise exn
TransferInvalidError: Cannot have start index greater than total size

After removing the Content-Encoding header the read works fine.



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