liuzhaokun created SPARK-22727:
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Summary: spark.executor.instances's default value should be 2
Key: SPARK-22727
URL: https://issues.apache.org/jira/browse/SPARK-22727
Project: Spark
Issue Type: Improvement
Components: YARN
Affects Versions: 2.2.0
Reporter: liuzhaokun
Priority: Minor
spark.executor.instances's default value in running-on-yarn.md is 2,but in
ExecutorAllocationManager.scala and org.apache.spark.util.Utils.scala it is
used as the default value is 0.And I think it should be 2 for applications'
initialization.
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