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https://issues.apache.org/jira/browse/BEAM-2586?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16117152#comment-16117152
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ASF GitHub Bot commented on BEAM-2586:
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Github user cphbrt closed the pull request at:
https://github.com/apache/beam/pull/3543
> Accommodate custom delimiters in TextIO
> ---------------------------------------
>
> Key: BEAM-2586
> URL: https://issues.apache.org/jira/browse/BEAM-2586
> Project: Beam
> Issue Type: New Feature
> Components: sdk-java-core
> Reporter: Christopher Hebert
> Assignee: Davor Bonaci
> Priority: Minor
>
> We frequently process text files delimited by something other than newlines,
> including delimited only by end of file.
> First option:
> When we want to delimit by commas (or something else), we could use TextIO to
> read in line by line and apply a transform to split each line on commas. When
> we want to delimit by whole file, we could combine the elements of the
> PCollection output from TextIO that come from the same file into one element.
> Second option:
> Alternatively to complicating (and slowing) our pipelines with the methods
> above, we could write custom FileBasedSources for each use case.
> Third option:
> Preferably, we'd like to generalize TextIO to accept delimiters other than
> the default: \n, \r, \r\n.
> I'll attach a pull request for how we envision this generalization of TextIO
> to look.
> If this is not the direction Beam would like to go with TextIO, then we'll
> stick to maintaining our own TextIO or our own FileBasedSources to achieve
> this functionality.
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