[jira] [Commented] (GIRAPH-253) Create printf/pretty-printer style output format

["Jakob Homan (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/GIRAPH-253?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13414188#comment-13414188 ] 

Jakob Homan commented on GIRAPH-253:
------------------------------------

alternatively, it may just be easier to turn this into a streaming-type of approach, where one could specify a shell script to pass the vertex to and that returns the line to be output.
                
> Create printf/pretty-printer style output format
> ------------------------------------------------
>
>                 Key: GIRAPH-253
>                 URL: https://issues.apache.org/jira/browse/GIRAPH-253
>             Project: Giraph
>          Issue Type: Bug
>            Reporter: Jakob Homan
>
> It would be nice to have an outputformat where the user could specify (from the command-line in bin/giraph) the output of each vertex.  Something like:
> {noformat}--pretty-print="Hello, my name is %id and my value is %value. I have %edges.count edges"{noformat}
> This would result in text files, each line of which would correspond to a vertex.
> This would make it very easy for people to spit out different output formats without having to actually write any code...
> Bonus points: only print the line if some predicate holds true --pretty-print-if="edges.count>10"

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