Brock Noland created HIVE-6043:
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Summary: Document incompatible changes
Key: HIVE-6043
URL: https://issues.apache.org/jira/browse/HIVE-6043
Project: Hive
Issue Type: Task
Reporter: Brock Noland
Priority: Blocker
We need to document incompatible changes. For example
* HIVE-5372 changed object inspector hierarchy breaking most if not all custom
serdes
* HIVE-1511/HIVE-5263 serializes ObjectInspectors with Kryo so all custom
serdes (fixed by HIVE-5380)
* Hive 0.12 separates MapredWork into MapWork and ReduceWork which is used by
Serdes
* HIVE-5411 serializes expressions with Kryo which are used by custom serdes
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