Velineni Lakshmi Prasanna created APEXMALHAR-2447:
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Summary: 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
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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