GitHub user zsxwing opened a pull request:

    https://github.com/apache/spark/pull/16108

    [SPARK-18670][SS]Limit the number of 
StreamingQueryListener.StreamProgressEvent when there is no data

    ## What changes were proposed in this pull request?
    
    This PR adds a sql conf `spark.sql.streaming.noDataReportInterval` to 
control how long to wait before outputing the next StreamProgressEvent when 
there is no data.
    
    ## How was this patch tested?
    
    Jenkins

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/zsxwing/spark SPARK-18670

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/spark/pull/16108.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #16108
    
----
commit 4ace2bdeaf1586d5495a3cd60d5423aa6e376b59
Author: Shixiong Zhu <shixi...@databricks.com>
Date:   2016-12-01T21:29:50Z

    Limit the number of StreamingQueryListener.StreamProgressEvent when there 
is no data

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