[jira] [Created] (SPARK-26818) Make MLEvents JSON ser/de safe

["Hyukjin Kwon (JIRA)" <ji...@apache.org>]

Hyukjin Kwon created SPARK-26818:
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             Summary: Make MLEvents JSON ser/de safe
                 Key: SPARK-26818
                 URL: https://issues.apache.org/jira/browse/SPARK-26818
             Project: Spark
          Issue Type: Bug
          Components: ML
    Affects Versions: 3.0.0
            Reporter: Hyukjin Kwon
            Assignee: Hyukjin Kwon


Looks ML events are not JSON serializable. We can make it serialisable like:

{code}
@DeveloperApi
case class SparkListenerSQLExecutionEnd(executionId: Long, time: Long)
  extends SparkListenerEvent {

  // The name of the execution, e.g. `df.collect` will trigger a SQL execution with name "collect".
  @JsonIgnore private[sql] var executionName: Option[String] = None

  // The following 3 fields are only accessed when `executionName` is defined.

  // The duration of the SQL execution, in nanoseconds.
  @JsonIgnore private[sql] var duration: Long = 0L

  // The `QueryExecution` instance that represents the SQL execution
  @JsonIgnore private[sql] var qe: QueryExecution = null

  // The exception object that caused this execution to fail. None if the execution doesn't fail.
  @JsonIgnore private[sql] var executionFailure: Option[Exception] = None
}
{code}.



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