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From "Amit Sela (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (BEAM-434) Limit the number of output files a beam-examples execution writes
Date Tue, 12 Jul 2016 18:26:20 GMT

     [ https://issues.apache.org/jira/browse/BEAM-434?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Amit Sela updated BEAM-434:
---------------------------
    Summary: Limit the number of output files a beam-examples execution writes  (was: When
examples write output to file it creates many output files instead of one)

> Limit the number of output files a beam-examples execution writes
> -----------------------------------------------------------------
>
>                 Key: BEAM-434
>                 URL: https://issues.apache.org/jira/browse/BEAM-434
>             Project: Beam
>          Issue Type: Bug
>          Components: examples-java
>            Reporter: Amit Sela
>            Assignee: Amit Sela
>            Priority: Minor
>
> When using `TextIO.Write.to("/path/to/output")` without any restrictions on the number
of shards, it might generate many output files (depending on your input), for WordCount for
example, you'll get as many output files as unique words in your input.
> Since I think examples are expected to execute in a friendly manner to "see" what it
does and not optimize for performance in some way, I suggest to use `withoutSharding()` when
writing the example output to an output file.
> Examples I could find that behave this way:
> org.apache.beam.examples.WordCount
> org.apache.beam.examples.complete.TfIdf
> org.apache.beam.examples.cookbook.DeDupExample



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