Kaishen Ou created SPARK-26669:
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Summary: Spark-Core Inbox Message Lost
Key: SPARK-26669
URL: https://issues.apache.org/jira/browse/SPARK-26669
Project: Spark
Issue Type: Bug
Components: Spark Core
Affects Versions: 2.4.0
Reporter: Kaishen Ou
In Inbox.scala source code, line 158
message = messages.poll()
This line of code will retrieve and remove the first message if there is any.
When it is not null, this message will get lost and never be executed.
Am I missing any important knowledge? Hope anyone help to clarify this.
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