[jira] [Created] (SPARK-3651) Consolidate executor maps in CoarseGrainedSchedulerBackend

["Andrew Or (JIRA)" <ji...@apache.org>]

Andrew Or created SPARK-3651:
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             Summary: Consolidate executor maps in CoarseGrainedSchedulerBackend
                 Key: SPARK-3651
                 URL: https://issues.apache.org/jira/browse/SPARK-3651
             Project: Spark
          Issue Type: Improvement
          Components: Spark Core
    Affects Versions: 1.1.0
            Reporter: Andrew Or


In CoarseGrainedSchedulerBackend, we have:
{code}
    private val executorActor = new HashMap[String, ActorRef]
    private val executorAddress = new HashMap[String, Address]
    private val executorHost = new HashMap[String, String]
    private val freeCores = new HashMap[String, Int]
    private val totalCores = new HashMap[String, Int]
{code}
We only ever put / remove stuff from these maps together. It would simplify the code if we consolidate these all into one map as we have done in JobProgressListener in https://issues.apache.org/jira/browse/SPARK-2299.



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