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https://issues.apache.org/jira/browse/MAHOUT-717?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13044499#comment-13044499
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Sebastian Schelter commented on MAHOUT-717:
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Seems like I accidentally fixed this ;)
> LDAPrintTopics only prints first topic when outputting to stdout
> ----------------------------------------------------------------
>
> Key: MAHOUT-717
> URL: https://issues.apache.org/jira/browse/MAHOUT-717
> Project: Mahout
> Issue Type: Bug
> Affects Versions: 0.5
> Reporter: Mat Kelcey
> Assignee: Sean Owen
> Priority: Minor
> Fix For: 0.6
>
> Attachments: mahout-717.patch
>
>
> LDAPrintTopics uses a PrintWriter to output topics.
> This PrintWriter wraps a File when an output directory is specified and
> System.out otherwise.
> This PrintWriter is closed and recreated for each topic; which doesn't work
> for the System.out case (since it closes System.out)
> Fix is to flush the stream and close only in the output directory case.
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