Josh Rosen created SPARK-4388:
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Summary: Add tooltips to explain maxMemory / usedMemory columns in
executor UI
Key: SPARK-4388
URL: https://issues.apache.org/jira/browse/SPARK-4388
Project: Spark
Issue Type: Improvement
Components: Documentation, Web UI
Reporter: Josh Rosen
Priority: Minor
I've spoken to users who were confused by the max memory / used memory columns
in the executor UI, since the max memory was less than the total amount of
memory in their executor. This behavior is expected, since this is only
showing the fraction of memory that's reserved for caching, but we should add a
tooltip to explain this in order to avoid confusion.
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