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Posted to dev@avro.apache.org by "Sean Jensen-Grey (Created) (JIRA)" <ji...@apache.org> on 2011/11/23 19:27:40 UTC

[jira] [Created] (AVRO-959) python implementation calls seek on input, unable to read avros from a stream

python implementation calls seek on input, unable to read avros from a stream
-----------------------------------------------------------------------------

                 Key: AVRO-959
                 URL: https://issues.apache.org/jira/browse/AVRO-959
             Project: Avro
          Issue Type: Bug
          Components: python
    Affects Versions: 1.6.1
            Reporter: Sean Jensen-Grey


The python implementation of Avro calls seek on the input file handle which precludes it from being a stream (stdin, hadoop streaming, etc)

{{monospaced}}

ack -a -i seek
src/avro/datafile.py
109:      # seek to the end of the file and prepare for writing
110:      writer.seek(0, 2)
190:    DataFileReader.seek(long). Forces the end of the current block,
261:    self.reader.seek(0, 2)
263:    self.reader.seek(remember_pos)
270:    # seek to the beginning of the file to get magic block
271:    self.reader.seek(0, 0) 
316:    return True. Otherwise, seek back to where we started and return False.
320:      self.reader.seek(-SYNC_SIZE, 1)

src/avro/io.py
148:    reader is a Python object on which we can call read, seek, and tell.
267:    self.reader.seek(self.reader.tell() + n)

src/avro/txipc.py
217:    request.content.seek(0, 0)

test/test_io.py
137:    writer.seek(0)
{{monospaced}}

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[jira] [Updated] (AVRO-959) python implementation calls seek on input, unable to read avros from a stream

Posted by "Sean Jensen-Grey (Updated) (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/AVRO-959?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sean Jensen-Grey updated AVRO-959:
----------------------------------

    Description: 
The python implementation of Avro calls seek on the input file handle which precludes it from being a stream (stdin, hadoop streaming, etc)

{code}

ack -a -i seek
src/avro/datafile.py
109:      # seek to the end of the file and prepare for writing
110:      writer.seek(0, 2)
190:    DataFileReader.seek(long). Forces the end of the current block,
261:    self.reader.seek(0, 2)
263:    self.reader.seek(remember_pos)
270:    # seek to the beginning of the file to get magic block
271:    self.reader.seek(0, 0) 
316:    return True. Otherwise, seek back to where we started and return False.
320:      self.reader.seek(-SYNC_SIZE, 1)

src/avro/io.py
148:    reader is a Python object on which we can call read, seek, and tell.
267:    self.reader.seek(self.reader.tell() + n)

src/avro/txipc.py
217:    request.content.seek(0, 0)

test/test_io.py
137:    writer.seek(0)
{code}

  was:
The python implementation of Avro calls seek on the input file handle which precludes it from being a stream (stdin, hadoop streaming, etc)

{{monospaced}}

ack -a -i seek
src/avro/datafile.py
109:      # seek to the end of the file and prepare for writing
110:      writer.seek(0, 2)
190:    DataFileReader.seek(long). Forces the end of the current block,
261:    self.reader.seek(0, 2)
263:    self.reader.seek(remember_pos)
270:    # seek to the beginning of the file to get magic block
271:    self.reader.seek(0, 0) 
316:    return True. Otherwise, seek back to where we started and return False.
320:      self.reader.seek(-SYNC_SIZE, 1)

src/avro/io.py
148:    reader is a Python object on which we can call read, seek, and tell.
267:    self.reader.seek(self.reader.tell() + n)

src/avro/txipc.py
217:    request.content.seek(0, 0)

test/test_io.py
137:    writer.seek(0)
{{monospaced}}

    
> python implementation calls seek on input, unable to read avros from a stream
> -----------------------------------------------------------------------------
>
>                 Key: AVRO-959
>                 URL: https://issues.apache.org/jira/browse/AVRO-959
>             Project: Avro
>          Issue Type: Bug
>          Components: python
>    Affects Versions: 1.6.1
>            Reporter: Sean Jensen-Grey
>
> The python implementation of Avro calls seek on the input file handle which precludes it from being a stream (stdin, hadoop streaming, etc)
> {code}
> ack -a -i seek
> src/avro/datafile.py
> 109:      # seek to the end of the file and prepare for writing
> 110:      writer.seek(0, 2)
> 190:    DataFileReader.seek(long). Forces the end of the current block,
> 261:    self.reader.seek(0, 2)
> 263:    self.reader.seek(remember_pos)
> 270:    # seek to the beginning of the file to get magic block
> 271:    self.reader.seek(0, 0) 
> 316:    return True. Otherwise, seek back to where we started and return False.
> 320:      self.reader.seek(-SYNC_SIZE, 1)
> src/avro/io.py
> 148:    reader is a Python object on which we can call read, seek, and tell.
> 267:    self.reader.seek(self.reader.tell() + n)
> src/avro/txipc.py
> 217:    request.content.seek(0, 0)
> test/test_io.py
> 137:    writer.seek(0)
> {code}

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