[jira] [Work logged] (BEAM-4011) Python SDK: add glob support for HDFS

2018-09-24 Thread ASF GitHub Bot (JIRA)


 [ 
https://issues.apache.org/jira/browse/BEAM-4011?focusedWorklogId=147285=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-147285
 ]

ASF GitHub Bot logged work on BEAM-4011:


Author: ASF GitHub Bot
Created on: 24/Sep/18 20:24
Start Date: 24/Sep/18 20:24
Worklog Time Spent: 10m 
  Work Description: udim commented on issue #5024: [BEAM-4011] Unify Python 
IO glob implementation.
URL: https://github.com/apache/beam/pull/5024#issuecomment-424112346
 
 
   @knub , I filed a bug for your side-note. Thanks for reporting!
   https://issues.apache.org/jira/browse/BEAM-5486


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> Python SDK: add glob support for HDFS
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> Key: BEAM-4011
> URL: https://issues.apache.org/jira/browse/BEAM-4011
> Project: Beam
>  Issue Type: Bug
>  Components: sdk-py-core
>Reporter: Udi Meiri
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> Fix For: 2.5.0
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[jira] [Work logged] (BEAM-4011) Python SDK: add glob support for HDFS

2018-07-19 Thread ASF GitHub Bot (JIRA)


 [ 
https://issues.apache.org/jira/browse/BEAM-4011?focusedWorklogId=124874=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-124874
 ]

ASF GitHub Bot logged work on BEAM-4011:


Author: ASF GitHub Bot
Created on: 19/Jul/18 09:18
Start Date: 19/Jul/18 09:18
Worklog Time Spent: 10m 
  Work Description: knub commented on issue #5024: [BEAM-4011] Unify Python 
IO glob implementation.
URL: https://github.com/apache/beam/pull/5024#issuecomment-406211816
 
 
   Hi udim,
   
   thanks for your quick response! For future reference, here's the full 
replacement with the same interface as before:
   
   ```python
   from apache_beam.io.filesystems import FileSystems
   
   def glob(path):
   match_result = FileSystems.match([path])[0]
   file_metadata_objects = match_result.metadata_list
   return [fm.path for fm in file_metadata_objects]
   ```
   
   ---
   
   Side-note: I think there's a bug in the `FileSystems.match` implementation 
for certain globs, see the following snippet:
   
   ```ipynb
   In [1]: from apache_beam.io.filesystems import FileSystems
   
   In [2]: FileSystems.match(["gs:///*"])
   /usr/local/lib/python2.7/dist-packages/apache_beam/io/gcp/gcsio.py:176: 
DeprecationWarning: object() takes no parameters
 super(GcsIO, cls).__new__(cls, storage_client))
   WARNING:root:Retry with exponential backoff: waiting for 4.3505648468 
seconds before retrying list_prefix because we caught exception: ValueError: 
GCS path must be in the form gs:///.
Traceback for above exception (most recent call last):
 File "/usr/local/lib/python2.7/dist-packages/apache_beam/utils/retry.py", 
line 180, in wrapper
   return fun(*args, **kwargs)
 File "/usr/local/lib/python2.7/dist-packages/apache_beam/io/gcp/gcsio.py", 
line 423, in list_prefix
   bucket, prefix = parse_gcs_path(path)
 File "/usr/local/lib/python2.7/dist-packages/apache_beam/io/gcp/gcsio.py", 
line 147, in parse_gcs_path
   raise ValueError('GCS path must be in the form gs:///.')
   ```
   


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> Python SDK: add glob support for HDFS
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> Key: BEAM-4011
> URL: https://issues.apache.org/jira/browse/BEAM-4011
> Project: Beam
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>Reporter: Udi Meiri
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[jira] [Work logged] (BEAM-4011) Python SDK: add glob support for HDFS

2018-07-18 Thread ASF GitHub Bot (JIRA)


 [ 
https://issues.apache.org/jira/browse/BEAM-4011?focusedWorklogId=124347=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-124347
 ]

ASF GitHub Bot logged work on BEAM-4011:


Author: ASF GitHub Bot
Created on: 18/Jul/18 07:23
Start Date: 18/Jul/18 07:23
Worklog Time Spent: 10m 
  Work Description: udim commented on issue #5024: [BEAM-4011] Unify Python 
IO glob implementation.
URL: https://github.com/apache/beam/pull/5024#issuecomment-405835585
 
 
   Hi @knub !
   First of all, I apologize for breaking the API. In the future we will label 
deprecated methods as such before removing them, and document a migration path.
   
   Calling `Filesystems.match()` should work as a drop-in replacement.


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> Project: Beam
>  Issue Type: Bug
>  Components: sdk-py-core
>Reporter: Udi Meiri
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[jira] [Work logged] (BEAM-4011) Python SDK: add glob support for HDFS

2018-07-16 Thread ASF GitHub Bot (JIRA)


 [ 
https://issues.apache.org/jira/browse/BEAM-4011?focusedWorklogId=123660=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-123660
 ]

ASF GitHub Bot logged work on BEAM-4011:


Author: ASF GitHub Bot
Created on: 16/Jul/18 15:54
Start Date: 16/Jul/18 15:54
Worklog Time Spent: 10m 
  Work Description: knub edited a comment on issue #5024: [BEAM-4011] Unify 
Python IO glob implementation.
URL: https://github.com/apache/beam/pull/5024#issuecomment-405294775
 
 
   @udim @chamikaramj 
   Hi there!
   
   first of all, thanks for your work in Apache Beam!
   
   I have a problem: I just updated from `apache_beam==2.4.0` to 
`apache_beam==2.5.0`.
   Previously, I was using:
   ```
   gcsio.GcsIO().glob(glob_string)
   ```
   for queries against GCS. Now this previously public interface does not work 
anymore in `apache_beam==2.5.0`.
   After doing some digging, I found this PR which seems related. I can't find 
any documentation/update guide on how to migrate from the former to the latter 
version and also couldn't find out from reading the code. Can you help me?


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> Python SDK: add glob support for HDFS
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> Key: BEAM-4011
> URL: https://issues.apache.org/jira/browse/BEAM-4011
> Project: Beam
>  Issue Type: Bug
>  Components: sdk-py-core
>Reporter: Udi Meiri
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[jira] [Work logged] (BEAM-4011) Python SDK: add glob support for HDFS

2018-07-16 Thread ASF GitHub Bot (JIRA)


 [ 
https://issues.apache.org/jira/browse/BEAM-4011?focusedWorklogId=123659=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-123659
 ]

ASF GitHub Bot logged work on BEAM-4011:


Author: ASF GitHub Bot
Created on: 16/Jul/18 15:53
Start Date: 16/Jul/18 15:53
Worklog Time Spent: 10m 
  Work Description: knub commented on issue #5024: [BEAM-4011] Unify Python 
IO glob implementation.
URL: https://github.com/apache/beam/pull/5024#issuecomment-405294775
 
 
   @udim @chamikaramj 
   Hi there!
   
   first of all, thanks for your work in Apache Beam!
   
   I have a problem. I just updated from `apache_beam==2.4.0` to 
`apache_beam==2.5.0`.
   I was previously using:
   ```
   gcsio.GcsIO().glob(glob_string)
   ```
   for queries against GCS. Now this previously public interface does not work 
anymore in `apache_beam==2.5.0`.
   After doing quite some digging, I found this PR which seems related. I can't 
find any documentation/update guide on how to migrate from the former to the 
latter version and also couldn't find out from reading the code. Can you help 
me?


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> Python SDK: add glob support for HDFS
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> Key: BEAM-4011
> URL: https://issues.apache.org/jira/browse/BEAM-4011
> Project: Beam
>  Issue Type: Bug
>  Components: sdk-py-core
>Reporter: Udi Meiri
>Assignee: Udi Meiri
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[jira] [Work logged] (BEAM-4011) Python SDK: add glob support for HDFS

2018-04-16 Thread ASF GitHub Bot (JIRA)

 [ 
https://issues.apache.org/jira/browse/BEAM-4011?focusedWorklogId=91574=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-91574
 ]

ASF GitHub Bot logged work on BEAM-4011:


Author: ASF GitHub Bot
Created on: 17/Apr/18 02:20
Start Date: 17/Apr/18 02:20
Worklog Time Spent: 10m 
  Work Description: chamikaramj closed pull request #5024: [BEAM-4011] 
Unify Python IO glob implementation.
URL: https://github.com/apache/beam/pull/5024
 
 
   

This is a PR merged from a forked repository.
As GitHub hides the original diff on merge, it is displayed below for
the sake of provenance:

As this is a foreign pull request (from a fork), the diff is supplied
below (as it won't show otherwise due to GitHub magic):

diff --git a/sdks/python/apache_beam/io/filesystem.py 
b/sdks/python/apache_beam/io/filesystem.py
index 3f7e9aba847..929b7ef5607 100644
--- a/sdks/python/apache_beam/io/filesystem.py
+++ b/sdks/python/apache_beam/io/filesystem.py
@@ -21,8 +21,11 @@
 import abc
 import bz2
 import cStringIO
+import fnmatch
 import logging
 import os
+import posixpath
+import re
 import time
 import zlib
 
@@ -498,9 +501,49 @@ def mkdirs(self, path):
 raise NotImplementedError
 
   @abc.abstractmethod
+  def has_dirs(self):
+"""Whether this FileSystem supports directories."""
+raise NotImplementedError
+
+  @abc.abstractmethod
+  def _list(self, dir_or_prefix):
+"""List files in a location.
+
+Listing is non-recursive (for filesystems that support directories).
+
+Args:
+  dir_or_prefix: (string) A directory or location prefix (for filesystems
+that don't have directories).
+
+Returns:
+  Generator of ``FileMetadata`` objects.
+
+Raises:
+  ``BeamIOError`` if listing fails, but not if no files were found.
+"""
+raise NotImplementedError
+
+  @staticmethod
+  def _url_dirname(url_or_path):
+"""Like posixpath.dirname, but preserves scheme:// prefix.
+
+Args:
+  url_or_path: A string in the form of scheme://some/path OR /some/path.
+"""
+match = re.match(r'([a-z]+://)(.*)', url_or_path)
+if match is None:
+  return posixpath.dirname(url_or_path)
+url_prefix, path = match.groups()
+return url_prefix + posixpath.dirname(path)
+
   def match(self, patterns, limits=None):
 """Find all matching paths to the patterns provided.
 
+Pattern matching is done using fnmatch.fnmatch.
+For filesystems that have directories, matching is not recursive. Patterns
+like scheme://path/*/foo will not match anything.
+Patterns ending with '/' will be appended with '*'.
+
 Args:
   patterns: list of string for the file path pattern to match against
   limits: list of maximum number of responses that need to be fetched
@@ -510,7 +553,52 @@ def match(self, patterns, limits=None):
 Raises:
   ``BeamIOError`` if any of the pattern match operations fail
 """
-raise NotImplementedError
+if limits is None:
+  limits = [None] * len(patterns)
+else:
+  err_msg = "Patterns and limits should be equal in length"
+  assert len(patterns) == len(limits), err_msg
+
+def _match(pattern, limit):
+  """Find all matching paths to the pattern provided."""
+  if pattern.endswith('/'):
+pattern += '*'
+  # Get the part of the pattern before the first globbing character.
+  # For example scheme://path/foo* will become scheme://path/foo for
+  # filesystems like GCS, or converted to scheme://path for filesystems 
with
+  # directories.
+  prefix_or_dir = re.match('^[^[*?]*', pattern).group(0)
+
+  file_metadatas = []
+  if prefix_or_dir == pattern:
+# Short-circuit calling self.list() if there's no glob pattern to 
match.
+if self.exists(pattern):
+  file_metadatas = [FileMetadata(pattern, self.size(pattern))]
+  else:
+if self.has_dirs():
+  prefix_or_dir = self._url_dirname(prefix_or_dir)
+file_metadatas = self._list(prefix_or_dir)
+
+  metadata_list = []
+  for file_metadata in file_metadatas:
+if limit is not None and len(metadata_list) >= limit:
+  break
+if fnmatch.fnmatch(file_metadata.path, pattern):
+  metadata_list.append(file_metadata)
+
+  return MatchResult(pattern, metadata_list)
+
+exceptions = {}
+result = []
+for pattern, limit in zip(patterns, limits):
+  try:
+result.append(_match(pattern, limit))
+  except Exception as e:  # pylint: disable=broad-except
+exceptions[pattern] = e
+
+if exceptions:
+  raise BeamIOError("Match operation failed", exceptions)
+return result
 
   @abc.abstractmethod
   def create(self, path, mime_type='application/octet-stream',
@@ -579,6 +667,19 @@ def exists(self, path):
 raise NotImplementedError
 
   @abc.abstractmethod
+  def size(self, path):
+"""Get 

[jira] [Work logged] (BEAM-4011) Python SDK: add glob support for HDFS

2018-04-12 Thread ASF GitHub Bot (JIRA)

 [ 
https://issues.apache.org/jira/browse/BEAM-4011?focusedWorklogId=90665=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-90665
 ]

ASF GitHub Bot logged work on BEAM-4011:


Author: ASF GitHub Bot
Created on: 13/Apr/18 01:30
Start Date: 13/Apr/18 01:30
Worklog Time Spent: 10m 
  Work Description: udim commented on a change in pull request #5024: 
[BEAM-4011] Unify Python IO glob implementation.
URL: https://github.com/apache/beam/pull/5024#discussion_r181264323
 
 

 ##
 File path: sdks/python/apache_beam/io/filesystem.py
 ##
 @@ -510,7 +551,48 @@ def match(self, patterns, limits=None):
 Raises:
   ``BeamIOError`` if any of the pattern match operations fail
 """
-raise NotImplementedError
+if limits is None:
+  limits = [None] * len(patterns)
+else:
+  err_msg = "Patterns and limits should be equal in length"
+  assert len(patterns) == len(limits), err_msg
+
+def _match(pattern, limit):
+  """Find all matching paths to the pattern provided."""
+  if pattern.endswith('/'):
+pattern += '*'
+  prefix_or_dir = re.match('^[^[*?]*', pattern).group(0)
 
 Review comment:
   done


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> Python SDK: add glob support for HDFS
> -
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> Key: BEAM-4011
> URL: https://issues.apache.org/jira/browse/BEAM-4011
> Project: Beam
>  Issue Type: Bug
>  Components: sdk-py-core
>Reporter: Udi Meiri
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[jira] [Work logged] (BEAM-4011) Python SDK: add glob support for HDFS

2018-04-12 Thread ASF GitHub Bot (JIRA)

 [ 
https://issues.apache.org/jira/browse/BEAM-4011?focusedWorklogId=90667=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-90667
 ]

ASF GitHub Bot logged work on BEAM-4011:


Author: ASF GitHub Bot
Created on: 13/Apr/18 01:30
Start Date: 13/Apr/18 01:30
Worklog Time Spent: 10m 
  Work Description: udim commented on a change in pull request #5024: 
[BEAM-4011] Unify Python IO glob implementation.
URL: https://github.com/apache/beam/pull/5024#discussion_r181263543
 
 

 ##
 File path: sdks/python/apache_beam/io/filesystem.py
 ##
 @@ -498,9 +501,47 @@ def mkdirs(self, path):
 raise NotImplementedError
 
   @abc.abstractmethod
+  def has_dirs(self):
+"""Whether this FileSystem supports directories."""
+raise NotImplementedError
+
+  @abc.abstractmethod
+  def list(self, dir_or_prefix):
 
 Review comment:
   done


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> -
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> Key: BEAM-4011
> URL: https://issues.apache.org/jira/browse/BEAM-4011
> Project: Beam
>  Issue Type: Bug
>  Components: sdk-py-core
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[jira] [Work logged] (BEAM-4011) Python SDK: add glob support for HDFS

2018-04-12 Thread ASF GitHub Bot (JIRA)

 [ 
https://issues.apache.org/jira/browse/BEAM-4011?focusedWorklogId=90666=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-90666
 ]

ASF GitHub Bot logged work on BEAM-4011:


Author: ASF GitHub Bot
Created on: 13/Apr/18 01:30
Start Date: 13/Apr/18 01:30
Worklog Time Spent: 10m 
  Work Description: udim commented on a change in pull request #5024: 
[BEAM-4011] Unify Python IO glob implementation.
URL: https://github.com/apache/beam/pull/5024#discussion_r181263847
 
 

 ##
 File path: sdks/python/apache_beam/io/filesystem.py
 ##
 @@ -498,9 +501,47 @@ def mkdirs(self, path):
 raise NotImplementedError
 
   @abc.abstractmethod
+  def has_dirs(self):
+"""Whether this FileSystem supports directories."""
+raise NotImplementedError
+
+  @abc.abstractmethod
+  def list(self, dir_or_prefix):
+"""List files in a location.
+
+Listing is non-recursive (for filesystems that support directories).
+
+Args:
+  dir_or_prefix: (string) A directory or location prefix (for filesystems
+that don't have directories).
+
+Returns:
+  Generator of ``FileMetadata`` objects.
+
+Raises:
+  ``BeamIOError`` if listing fails, but not if no files were found.
+"""
+raise NotImplementedError
+
+  @staticmethod
+  def _url_dirname(url_or_path):
+"""Like posixpath.dirname, but preserves scheme:// prefix.
+
+Args:
+  url_or_path: A string in the form of scheme://some/path OR /some/path.
+"""
+match = re.match(r'([a-z]+://)(.*)', url_or_path)
+if match is None:
+  return posixpath.dirname(url_or_path)
+url_prefix, path = match.groups()
+return url_prefix + posixpath.dirname(path)
+
   def match(self, patterns, limits=None):
 """Find all matching paths to the patterns provided.
 
+Pattern matching is done using fnmatch.fnmatch.
 
 Review comment:
   Clarified.


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> Key: BEAM-4011
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> Project: Beam
>  Issue Type: Bug
>  Components: sdk-py-core
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[jira] [Work logged] (BEAM-4011) Python SDK: add glob support for HDFS

2018-04-12 Thread ASF GitHub Bot (JIRA)

 [ 
https://issues.apache.org/jira/browse/BEAM-4011?focusedWorklogId=90664=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-90664
 ]

ASF GitHub Bot logged work on BEAM-4011:


Author: ASF GitHub Bot
Created on: 13/Apr/18 01:30
Start Date: 13/Apr/18 01:30
Worklog Time Spent: 10m 
  Work Description: udim commented on a change in pull request #5024: 
[BEAM-4011] Unify Python IO glob implementation.
URL: https://github.com/apache/beam/pull/5024#discussion_r181265403
 
 

 ##
 File path: sdks/python/apache_beam/io/filesystem.py
 ##
 @@ -579,6 +661,19 @@ def exists(self, path):
 raise NotImplementedError
 
   @abc.abstractmethod
+  def size(self, path):
 
 Review comment:
   _list() returns sizes, but it only works on prefixes (may return more than 
one result) or directories (fails on files).
   I added this method for the case where the pattern given doesn't end in `/` 
and has no globbing characters. In this case we return the size of the file or 
directory pointed to by the pattern (if it exists).


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> Project: Beam
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>  Components: sdk-py-core
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[jira] [Work logged] (BEAM-4011) Python SDK: add glob support for HDFS

2018-04-12 Thread ASF GitHub Bot (JIRA)

 [ 
https://issues.apache.org/jira/browse/BEAM-4011?focusedWorklogId=90663=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-90663
 ]

ASF GitHub Bot logged work on BEAM-4011:


Author: ASF GitHub Bot
Created on: 13/Apr/18 01:30
Start Date: 13/Apr/18 01:30
Worklog Time Spent: 10m 
  Work Description: udim commented on a change in pull request #5024: 
[BEAM-4011] Unify Python IO glob implementation.
URL: https://github.com/apache/beam/pull/5024#discussion_r181264935
 
 

 ##
 File path: sdks/python/apache_beam/io/filesystem.py
 ##
 @@ -510,7 +551,48 @@ def match(self, patterns, limits=None):
 Raises:
   ``BeamIOError`` if any of the pattern match operations fail
 """
-raise NotImplementedError
+if limits is None:
+  limits = [None] * len(patterns)
+else:
+  err_msg = "Patterns and limits should be equal in length"
+  assert len(patterns) == len(limits), err_msg
+
+def _match(pattern, limit):
+  """Find all matching paths to the pattern provided."""
+  if pattern.endswith('/'):
+pattern += '*'
+  prefix_or_dir = re.match('^[^[*?]*', pattern).group(0)
+
+  file_metadatas = []
+  if prefix_or_dir == pattern:
+# Short-circuit calling self.list() if there's no glob pattern to 
match.
+if self.exists(pattern):
+  file_metadatas = [FileMetadata(pattern, self.size(pattern))]
+  else:
+if self.has_dirs():
 
 Review comment:
   Yes. I explained it in the new comment a little above this line.


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> Python SDK: add glob support for HDFS
> -
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> Key: BEAM-4011
> URL: https://issues.apache.org/jira/browse/BEAM-4011
> Project: Beam
>  Issue Type: Bug
>  Components: sdk-py-core
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[jira] [Work logged] (BEAM-4011) Python SDK: add glob support for HDFS

2018-04-12 Thread ASF GitHub Bot (JIRA)

 [ 
https://issues.apache.org/jira/browse/BEAM-4011?focusedWorklogId=90519=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-90519
 ]

ASF GitHub Bot logged work on BEAM-4011:


Author: ASF GitHub Bot
Created on: 12/Apr/18 18:15
Start Date: 12/Apr/18 18:15
Worklog Time Spent: 10m 
  Work Description: chamikaramj commented on a change in pull request 
#5024: [BEAM-4011] Unify Python IO glob implementation.
URL: https://github.com/apache/beam/pull/5024#discussion_r181169858
 
 

 ##
 File path: sdks/python/apache_beam/io/filesystem.py
 ##
 @@ -498,9 +501,47 @@ def mkdirs(self, path):
 raise NotImplementedError
 
   @abc.abstractmethod
+  def has_dirs(self):
+"""Whether this FileSystem supports directories."""
+raise NotImplementedError
+
+  @abc.abstractmethod
+  def list(self, dir_or_prefix):
+"""List files in a location.
+
+Listing is non-recursive (for filesystems that support directories).
+
+Args:
+  dir_or_prefix: (string) A directory or location prefix (for filesystems
+that don't have directories).
+
+Returns:
+  Generator of ``FileMetadata`` objects.
+
+Raises:
+  ``BeamIOError`` if listing fails, but not if no files were found.
+"""
+raise NotImplementedError
+
+  @staticmethod
+  def _url_dirname(url_or_path):
+"""Like posixpath.dirname, but preserves scheme:// prefix.
+
+Args:
+  url_or_path: A string in the form of scheme://some/path OR /some/path.
+"""
+match = re.match(r'([a-z]+://)(.*)', url_or_path)
+if match is None:
+  return posixpath.dirname(url_or_path)
+url_prefix, path = match.groups()
+return url_prefix + posixpath.dirname(path)
+
   def match(self, patterns, limits=None):
 """Find all matching paths to the patterns provided.
 
+Pattern matching is done using fnmatch.fnmatch.
 
 Review comment:
   I think we should clarify if match for \/* is recursive or not. I 
think most users will use a pattern in the form \/\* which to 
avoid matching all sub-directories anyways.


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> Python SDK: add glob support for HDFS
> -
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> Key: BEAM-4011
> URL: https://issues.apache.org/jira/browse/BEAM-4011
> Project: Beam
>  Issue Type: Bug
>  Components: sdk-py-core
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[jira] [Work logged] (BEAM-4011) Python SDK: add glob support for HDFS

2018-04-12 Thread ASF GitHub Bot (JIRA)

 [ 
https://issues.apache.org/jira/browse/BEAM-4011?focusedWorklogId=90516=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-90516
 ]

ASF GitHub Bot logged work on BEAM-4011:


Author: ASF GitHub Bot
Created on: 12/Apr/18 18:15
Start Date: 12/Apr/18 18:15
Worklog Time Spent: 10m 
  Work Description: chamikaramj commented on a change in pull request 
#5024: [BEAM-4011] Unify Python IO glob implementation.
URL: https://github.com/apache/beam/pull/5024#discussion_r181165982
 
 

 ##
 File path: sdks/python/apache_beam/io/filesystem.py
 ##
 @@ -498,9 +501,47 @@ def mkdirs(self, path):
 raise NotImplementedError
 
   @abc.abstractmethod
+  def has_dirs(self):
+"""Whether this FileSystem supports directories."""
+raise NotImplementedError
+
+  @abc.abstractmethod
+  def list(self, dir_or_prefix):
 
 Review comment:
   I think having both list() and match() as public can be confusing to users. 
Let's keep list() as private (and move it to filesystem implementations)  if 
there's no compelling use-case to keep it in the interface.


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> Python SDK: add glob support for HDFS
> -
>
> Key: BEAM-4011
> URL: https://issues.apache.org/jira/browse/BEAM-4011
> Project: Beam
>  Issue Type: Bug
>  Components: sdk-py-core
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[jira] [Work logged] (BEAM-4011) Python SDK: add glob support for HDFS

2018-04-12 Thread ASF GitHub Bot (JIRA)

 [ 
https://issues.apache.org/jira/browse/BEAM-4011?focusedWorklogId=90517=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-90517
 ]

ASF GitHub Bot logged work on BEAM-4011:


Author: ASF GitHub Bot
Created on: 12/Apr/18 18:15
Start Date: 12/Apr/18 18:15
Worklog Time Spent: 10m 
  Work Description: chamikaramj commented on a change in pull request 
#5024: [BEAM-4011] Unify Python IO glob implementation.
URL: https://github.com/apache/beam/pull/5024#discussion_r181161482
 
 

 ##
 File path: sdks/python/apache_beam/io/filesystem.py
 ##
 @@ -510,7 +551,48 @@ def match(self, patterns, limits=None):
 Raises:
   ``BeamIOError`` if any of the pattern match operations fail
 """
-raise NotImplementedError
+if limits is None:
+  limits = [None] * len(patterns)
+else:
+  err_msg = "Patterns and limits should be equal in length"
+  assert len(patterns) == len(limits), err_msg
+
+def _match(pattern, limit):
+  """Find all matching paths to the pattern provided."""
+  if pattern.endswith('/'):
+pattern += '*'
+  prefix_or_dir = re.match('^[^[*?]*', pattern).group(0)
 
 Review comment:
   Please add a comment explaining this regex.


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> Python SDK: add glob support for HDFS
> -
>
> Key: BEAM-4011
> URL: https://issues.apache.org/jira/browse/BEAM-4011
> Project: Beam
>  Issue Type: Bug
>  Components: sdk-py-core
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[jira] [Work logged] (BEAM-4011) Python SDK: add glob support for HDFS

2018-04-12 Thread ASF GitHub Bot (JIRA)

 [ 
https://issues.apache.org/jira/browse/BEAM-4011?focusedWorklogId=90515=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-90515
 ]

ASF GitHub Bot logged work on BEAM-4011:


Author: ASF GitHub Bot
Created on: 12/Apr/18 18:15
Start Date: 12/Apr/18 18:15
Worklog Time Spent: 10m 
  Work Description: chamikaramj commented on a change in pull request 
#5024: [BEAM-4011] Unify Python IO glob implementation.
URL: https://github.com/apache/beam/pull/5024#discussion_r181162315
 
 

 ##
 File path: sdks/python/apache_beam/io/filesystem.py
 ##
 @@ -510,7 +551,48 @@ def match(self, patterns, limits=None):
 Raises:
   ``BeamIOError`` if any of the pattern match operations fail
 """
-raise NotImplementedError
+if limits is None:
+  limits = [None] * len(patterns)
+else:
+  err_msg = "Patterns and limits should be equal in length"
+  assert len(patterns) == len(limits), err_msg
+
+def _match(pattern, limit):
+  """Find all matching paths to the pattern provided."""
+  if pattern.endswith('/'):
+pattern += '*'
+  prefix_or_dir = re.match('^[^[*?]*', pattern).group(0)
+
+  file_metadatas = []
+  if prefix_or_dir == pattern:
+# Short-circuit calling self.list() if there's no glob pattern to 
match.
+if self.exists(pattern):
+  file_metadatas = [FileMetadata(pattern, self.size(pattern))]
+  else:
+if self.has_dirs():
 
 Review comment:
   Wasn't sure from code, but do we try to list "\/\*" for 
"\/\*" ?


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> Python SDK: add glob support for HDFS
> -
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> Key: BEAM-4011
> URL: https://issues.apache.org/jira/browse/BEAM-4011
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[jira] [Work logged] (BEAM-4011) Python SDK: add glob support for HDFS

2018-04-12 Thread ASF GitHub Bot (JIRA)

 [ 
https://issues.apache.org/jira/browse/BEAM-4011?focusedWorklogId=90518=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-90518
 ]

ASF GitHub Bot logged work on BEAM-4011:


Author: ASF GitHub Bot
Created on: 12/Apr/18 18:15
Start Date: 12/Apr/18 18:15
Worklog Time Spent: 10m 
  Work Description: chamikaramj commented on a change in pull request 
#5024: [BEAM-4011] Unify Python IO glob implementation.
URL: https://github.com/apache/beam/pull/5024#discussion_r181163732
 
 

 ##
 File path: sdks/python/apache_beam/io/filesystem.py
 ##
 @@ -579,6 +661,19 @@ def exists(self, path):
 raise NotImplementedError
 
   @abc.abstractmethod
+  def size(self, path):
 
 Review comment:
   Why do we need a separate method for size() ? I think we can already stat 
files using the match() method (it returns FileMetada objects).


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> Python SDK: add glob support for HDFS
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> Key: BEAM-4011
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> Project: Beam
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[jira] [Work logged] (BEAM-4011) Python SDK: add glob support for HDFS

2018-04-10 Thread ASF GitHub Bot (JIRA)

 [ 
https://issues.apache.org/jira/browse/BEAM-4011?focusedWorklogId=89728=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-89728
 ]

ASF GitHub Bot logged work on BEAM-4011:


Author: ASF GitHub Bot
Created on: 11/Apr/18 00:31
Start Date: 11/Apr/18 00:31
Worklog Time Spent: 10m 
  Work Description: udim commented on issue #5024: [BEAM-4011] Unify Python 
IO glob implementation.
URL: https://github.com/apache/beam/pull/5024#issuecomment-380289036
 
 
   retest this please


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> Python SDK: add glob support for HDFS
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> Project: Beam
>  Issue Type: Bug
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[jira] [Work logged] (BEAM-4011) Python SDK: add glob support for HDFS

2018-04-06 Thread ASF GitHub Bot (JIRA)

 [ 
https://issues.apache.org/jira/browse/BEAM-4011?focusedWorklogId=88535=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-88535
 ]

ASF GitHub Bot logged work on BEAM-4011:


Author: ASF GitHub Bot
Created on: 06/Apr/18 17:56
Start Date: 06/Apr/18 17:56
Worklog Time Spent: 10m 
  Work Description: udim commented on issue #5024: [BEAM-4011] Unify Python 
IO glob implementation.
URL: https://github.com/apache/beam/pull/5024#issuecomment-379329439
 
 
   This code is working. I've opened BEAM-4027 for the precommit failure with 
cython.


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> Python SDK: add glob support for HDFS
> -
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> Key: BEAM-4011
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[jira] [Work logged] (BEAM-4011) Python SDK: add glob support for HDFS

2018-04-06 Thread ASF GitHub Bot (JIRA)

 [ 
https://issues.apache.org/jira/browse/BEAM-4011?focusedWorklogId=88536=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-88536
 ]

ASF GitHub Bot logged work on BEAM-4011:


Author: ASF GitHub Bot
Created on: 06/Apr/18 17:56
Start Date: 06/Apr/18 17:56
Worklog Time Spent: 10m 
  Work Description: udim commented on issue #5024: [BEAM-4011] Unify Python 
IO glob implementation.
URL: https://github.com/apache/beam/pull/5024#issuecomment-379329516
 
 
   R: @chamikaramj 


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[jira] [Work logged] (BEAM-4011) Python SDK: add glob support for HDFS

2018-04-05 Thread ASF GitHub Bot (JIRA)

 [ 
https://issues.apache.org/jira/browse/BEAM-4011?focusedWorklogId=88292=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-88292
 ]

ASF GitHub Bot logged work on BEAM-4011:


Author: ASF GitHub Bot
Created on: 06/Apr/18 00:54
Start Date: 06/Apr/18 00:54
Worklog Time Spent: 10m 
  Work Description: udim commented on issue #5024: [BEAM-4011] Unify Python 
IO glob implementation.
URL: https://github.com/apache/beam/pull/5024#issuecomment-379118600
 
 
   run python postcommit


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> Python SDK: add glob support for HDFS
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[jira] [Work logged] (BEAM-4011) Python SDK: add glob support for HDFS

2018-04-04 Thread ASF GitHub Bot (JIRA)

 [ 
https://issues.apache.org/jira/browse/BEAM-4011?focusedWorklogId=87735=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-87735
 ]

ASF GitHub Bot logged work on BEAM-4011:


Author: ASF GitHub Bot
Created on: 04/Apr/18 19:26
Start Date: 04/Apr/18 19:26
Worklog Time Spent: 10m 
  Work Description: udim commented on issue #5024: [BEAM-4011] Normalize 
Filesystems.match() glob behavior.
URL: https://github.com/apache/beam/pull/5024#issuecomment-378716918
 
 
   Do not merge before https://github.com/apache/beam/pull/4979


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[jira] [Work logged] (BEAM-4011) Python SDK: add glob support for HDFS

2018-04-04 Thread ASF GitHub Bot (JIRA)

 [ 
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 ]

ASF GitHub Bot logged work on BEAM-4011:


Author: ASF GitHub Bot
Created on: 04/Apr/18 19:03
Start Date: 04/Apr/18 19:03
Worklog Time Spent: 10m 
  Work Description: udim opened a new pull request #5024: [BEAM-4011] 
Normalize Filesystems.match() glob behavior.
URL: https://github.com/apache/beam/pull/5024
 
 
   - Introduces FileSystem.list() abstract method. Lists a directory or
   prefix.
   - Implement FileSystem.match() - no longer abstract, unifies glob
   behavior using fnmatch.fnmatch.
   
   DESCRIPTION HERE
   
   
   
   Follow this checklist to help us incorporate your contribution quickly and 
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- [ ] Make sure there is a [JIRA 
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Contributor License Agreement](https://www.apache.org/licenses/icla.pdf).
   
   


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