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https://issues.apache.org/jira/browse/BEAM-5417?focusedWorklogId=147547&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-147547
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ASF GitHub Bot logged work on BEAM-5417:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 25/Sep/18 13:01
            Start Date: 25/Sep/18 13:01
    Worklog Time Spent: 10m 
      Work Description: joar commented on issue #6423: [BEAM-5417] Parity 
between GCS and local match
URL: https://github.com/apache/beam/pull/6423#issuecomment-424333429
 
 
   > I think that doing our own conversion of glob pattern to regex is the best 
solution.
   
   @udim I agree, pushed a solution that uses a customized version of [Python 
2.7's 
fnmatch.translate](https://github.com/python/cpython/blob/170ea8ccd4235d28538ab713041502d07ad1cacd/Lib/fnmatch.py#L85-L120).

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Issue Time Tracking
-------------------

    Worklog Id:     (was: 147547)
    Time Spent: 2.5h  (was: 2h 20m)

> FileSystems.match behaviour diff between GCS and local file system
> ------------------------------------------------------------------
>
>                 Key: BEAM-5417
>                 URL: https://issues.apache.org/jira/browse/BEAM-5417
>             Project: Beam
>          Issue Type: Bug
>          Components: sdk-py-core
>    Affects Versions: 2.5.0, 2.6.0
>            Reporter: Joar Wandborg
>            Assignee: Chamikara Jayalath
>            Priority: Major
>          Time Spent: 2.5h
>  Remaining Estimate: 0h
>
> Given the directory structure:
>  
> {noformat}
> .
> ├── filesystem-match-test
> │   ├── a
> │   │   └── file.txt
> │   └── b
> │       └── file.txt
> └── filesystem-match-test.py
> {noformat}
>  
> Where {{filesystem-match-test.py}} contains:
> {code:python}
> from __future__ import print_function
> import os
> import posixpath
> from apache_beam.io.filesystem import MatchResult
> from apache_beam.io.filesystems import FileSystems
> BASES = [
>     os.path.join(os.path.dirname(__file__), "./"),
>     "gs://my-bucket/test/",
> ]
> pattern = "filesystem-match-test/*/file.txt"
> for base_path in BASES:
>     full_pattern = posixpath.join(base_path, pattern)
>     print("full_pattern: {}".format(full_pattern))
>     match_result = FileSystems.match([full_pattern])[0]  # type: MatchResult
>     print("metadata list: {}".format(match_result.metadata_list))
> {code}
> Running {{python filesystem-match-test.py}} does not match any files locally, 
> but does match files on GCS:
> {noformat}
> full_pattern: ./filesystem-match-test/*/file.txt
> metadata list: []
> full_pattern: gs://my-bucket/test/filesystem-match-test/*/file.txt
> metadata list: 
> [FileMetadata(gs://my-bucket/test/filesystem-match-test/a/file.txt, 6), 
> FileMetadata(gs://my-bucket/test/filesystem-match-test/b/file.txt, 6)]
> {noformat}
> The expected result is that a/file.txt and b/file.txt should be matched for 
> both patterns.



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