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Tibor Kiss commented on BEAM-778: --------------------------------- Thanks for the insights, [~katsia...@google.com] & [~chamikara]. As there is no immediate risk of concurrency issue I'd also opt for not extending _CompressedFile with a lock prematurely. I'll make a comment about the (lack of) thread safety in _CompressedFile in the PR associated with this JIRA. > Make fileio._CompressedFile seekable. > ------------------------------------- > > Key: BEAM-778 > URL: https://issues.apache.org/jira/browse/BEAM-778 > Project: Beam > Issue Type: Improvement > Components: sdk-py > Reporter: Chamikara Jayalath > Assignee: Tibor Kiss > Fix For: Not applicable > > > We have a TODO to make fileio._CompressedFile seekable. > https://github.com/apache/incubator-beam/blob/python-sdk/sdks/python/apache_beam/io/fileio.py#L692 > Without this, compressed file objects produce for FileBasedSource > implementations may not be able to use libraries that utilize methods seek() > and tell(). > For example tarfile.open(). -- This message was sent by Atlassian JIRA (v6.3.15#6346)