[
https://issues.apache.org/jira/browse/SPARK-30936?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Shixiong Zhu updated SPARK-30936:
---------------------------------
Summary: Forwards-compatibility in JsonProtocol in broken (was: Fix the
broken forwards-compatibility in JsonProtocol)
> Forwards-compatibility in JsonProtocol in broken
> ------------------------------------------------
>
> Key: SPARK-30936
> URL: https://issues.apache.org/jira/browse/SPARK-30936
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Affects Versions: 3.0.0
> Reporter: Shixiong Zhu
> Priority: Major
>
> JsonProtocol is supposed to provide strong backwards-compatibility and
> forwards-compatibility guarantees: any version of Spark should be able to
> read JSON output written by any other version, including newer versions.
> However, the forwards-compatibility guarantee is broken for events parsed by
> "ObjectMapper". If a new field is added to an event parsed by "ObjectMapper"
> (e.g.,
> https://github.com/apache/spark/commit/6dc5921e66d56885b95c07e56e687f9f6c1eaca7#diff-dc5c7a41fbb7479cef48b67eb41ad254R33),
> this event cannot be parsed by an old version of Spark History Server.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org
For additional commands, e-mail: issues-h...@spark.apache.org
