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https://issues.apache.org/jira/browse/SPARK-3028?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14096689#comment-14096689
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Patrick Wendell commented on SPARK-3028:
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I think we intentionally do not intend to ever serialize an update event as
JSON.
However, I think we should be more explicit about this in two ways.
1. In EventLoggingListener we should explicit put a no-op implementation of
onExecutorMetricsUpdate with a comment - I actually thought one version of the
PR had this, but maybe I'm misremembering.
2. We should also include the SparkListenerExecutorMetricsUpdate in the match
block and just have a no-op there also with a comment.
> sparkEventToJson should support SparkListenerExecutorMetricsUpdate
> ------------------------------------------------------------------
>
> Key: SPARK-3028
> URL: https://issues.apache.org/jira/browse/SPARK-3028
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Reporter: Reynold Xin
> Priority: Blocker
>
> SparkListenerExecutorMetricsUpdate was added without updating
> org.apache.spark.util.JsonProtocol.sparkEventToJson.
> This can crash the listener.
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