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Posted to issues@spark.apache.org by "Josh Rosen (JIRA)" <ji...@apache.org> on 2016/11/03 01:11:58 UTC

[jira] [Created] (SPARK-18236) Reduce memory usage of Spark UI and HistoryServer by reducing duplicate objects

Josh Rosen created SPARK-18236:
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             Summary: Reduce memory usage of Spark UI and HistoryServer by reducing duplicate objects
                 Key: SPARK-18236
                 URL: https://issues.apache.org/jira/browse/SPARK-18236
             Project: Spark
          Issue Type: Improvement
          Components: Web UI
            Reporter: Josh Rosen
            Assignee: Josh Rosen


When profiling heap dumps from the Spark History Server and live Spark web UIs, I found a tremendous amount of memory being wasted on duplicate objects and strings. A few small changes can cut per-task UI memory by half or more.



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