[ 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