Quanlong Huang created IMPALA-13240:
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Summary: 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
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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