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https://issues.apache.org/jira/browse/SPARK-21568?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-21568:
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Assignee: Apache Spark
> ConsoleProgressBar should only be enabled in shells
> ---------------------------------------------------
>
> Key: SPARK-21568
> URL: https://issues.apache.org/jira/browse/SPARK-21568
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 2.2.0
> Reporter: Marcelo Vanzin
> Assignee: Apache Spark
> Priority: Minor
>
> This is the current logic that enables the progress bar:
> {code}
> _progressBar =
> if (_conf.getBoolean("spark.ui.showConsoleProgress", true) &&
> !log.isInfoEnabled) {
> Some(new ConsoleProgressBar(this))
> } else {
> None
> }
> {code}
> That is based on the logging level; it just happens to align with the default
> configuration for shells (WARN) and normal apps (INFO).
> But if someone changes the default logging config for their app, this may
> break; they may silence logs by setting the default level to WARN or ERROR,
> and a normal application will see a lot of log spam from the progress bar
> (which is especially bad when output is redirected to a file, as is usually
> done when running in cluster mode).
> While it's possible to disable the progress bar separately, this behavior is
> not really expected.
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