xukun created SPARK-11986:
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Summary: background thread spill the context to disk
Key: SPARK-11986
URL: https://issues.apache.org/jira/browse/SPARK-11986
Project: Spark
Issue Type: Improvement
Components: Spark Core
Reporter: xukun
Priority: Minor
In case of aggregation or sort, it has a memory buffer to which it writes the
output.When the buffer data need to flush to file, use a background thread
starts to spill the content to disk
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