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https://issues.apache.org/jira/browse/SPARK-1972?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen resolved SPARK-1972.
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Resolution: Won't Fix
> Add support for setting and visualizing custom task-related metrics
> -------------------------------------------------------------------
>
> Key: SPARK-1972
> URL: https://issues.apache.org/jira/browse/SPARK-1972
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Affects Versions: 0.9.1
> Reporter: Kalpit Shah
> Original Estimate: 72h
> Remaining Estimate: 72h
>
> Various RDDs may want to set/track custom metrics for improved monitoring and
> performance tuning. For e.g.:
> 1. A Task involving a JdbcRDD may want to track some metric related to JDBC
> execution.
> 2. A Task involving a user-defined RDD may want to track some metric specific
> to user's application.
> We currently use TaskMetrics for tracking task-related metrics, which
> provides no way of tracking custom task-related metrics. It is not good to
> introduce a new field in TaskMetric everytime we want to track a custom
> metric. That approach would be cumbersome and ugly. Besides, some of these
> custom metrics may only make sense for a specific RDD-subclass. Therefore, we
> need TaskMetrics to provide a generic way to allow RDD-subclasses to track
> custom metrics when computing partitions.
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