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Posted to dev@apex.apache.org by "Priyanka Gugale (JIRA)" <ji...@apache.org> on 2017/05/15 07:10:04 UTC
[jira] [Resolved] (APEXMALHAR-2447) No indication from
AbstractFileInputOperator when directory is empty
[ https://issues.apache.org/jira/browse/APEXMALHAR-2447?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Priyanka Gugale resolved APEXMALHAR-2447.
-----------------------------------------
Resolution: Fixed
Fix Version/s: 3.8.0
> No indication from AbstractFileInputOperator when directory is empty
> --------------------------------------------------------------------
>
> Key: APEXMALHAR-2447
> URL: https://issues.apache.org/jira/browse/APEXMALHAR-2447
> Project: Apache Apex Malhar
> Issue Type: Improvement
> Reporter: Velineni Lakshmi Prasanna
> Assignee: Velineni Lakshmi Prasanna
> Priority: Minor
> Fix For: 3.8.0
>
>
> AbstractFileInputOperator scans a directory for files and outputs the file contents. However, when the directory is empty nothing is sent. A downstream operator may want some basic information that the input directory is scanned, so for example, it can create an output folder. Add a notification to the operator when the directory is scanned for the first time. An implementation, for example, can use this notification to send a control tuple with the directory path notifying the downstream that the directory has been visited.
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