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https://issues.apache.org/jira/browse/IMPALA-13240?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17869391#comment-17869391
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Riza Suminto commented on IMPALA-13240:
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IMPALA-10370 might be a good addition to this.
> Add tools to detect incompatible changes in catalog and statestore service
> --------------------------------------------------------------------------
>
> Key: IMPALA-13240
> URL: https://issues.apache.org/jira/browse/IMPALA-13240
> Project: IMPALA
> Issue Type: Task
> Components: Infrastructure
> Reporter: Quanlong Huang
> Priority: Critical
>
> To support upgrading only the impalads of a cluster, we need to make sure
> backward compatibility between impalad and the catalogd and statestore
> services. If there are breaking changes in Thrift/Flatbuffers definitions
> used in these services, the versions become incompatible. Note that Protobuf
> is only used in communication between impalads so can be ignored here.
> The following files need to be checked:
> * common/thrift/*.thrift
> * common/fbs/*.fbs
> Ideally changes in Thrift definitions should only add optional fields.
> Changes in Flatbuffers schema only add new fields at the end of a table
> definition.
> We need a script to verify all Gerrit changes. A precommit job running this
> script and post comments will be helpful.
> Ref:
> https://diwakergupta.github.io/thrift-missing-guide/#_defining_structs
> https://flatbuffers.dev/flatbuffers_guide_writing_schema.html
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