[GEODE-9968] Fix deserialization for new fields in PdxSerializable class - ASF JIRA

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Details

Type: Bug
Status: In Progress
Priority: Major
Resolution: Unresolved
Affects Version/s: None
Fix Version/s: None
Component/s: native client
Labels:
- pull-request-available

Description

GIVEN an implementation of a PdxSerializable class
WHEN a set of entries have been written for this class
AND after a while, the implementation changes, adding new fields
AND a new set of entries are written containing some of the added fields
AND all of the region entries are read
THEN added fields of the latest entries are empty or contain garbage instead

Additional information. After analyzing Java implementation for PdxSerializable deserialization, it seems that the client fetches the PdxFields from the remote PdxType, but instead for the C++ implementation, code is different as it uses a mapping called "Local2Remote" (which I suppose it's an optimization). And the current use of this "Local2Remote" mapping is not working correctly under the described scenario.