Github user zhouyejoe commented on the issue:
https://github.com/apache/spark/pull/19170
@vanzin The problem still exists with your new changes to Spark History
Server. Once you use ListenerBus to replay the
log(https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/deploy/history/FsHistoryProvider.scala#L664),
it will use JsonProtocol to create events from Json
Data(https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/scheduler/ReplayListenerBus.scala#L85).
Once use JsonProtocol, the problem still
exists(https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/util/JsonProtocol.scala#L689).
Correct me if I am wrong. Thanks.
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