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https://issues.apache.org/jira/browse/GEODE-10276?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17534346#comment-17534346
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ASF GitHub Bot commented on GEODE-10276:
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gaussianrecurrence opened a new pull request, #969:
URL: https://github.com/apache/geode-native/pull/969
- Code related to PDX de(serialization) has been refactored and aligned
(in all possible means) to the Java client, solving the following
issues:
* GEODE-9968 - Fix deserialization for new fields in PdxSerializable
class
* GEODE-9753 - Coredump during PdxSerializable object serialization
* GEODE-10220 - Coredump while initializing PdxType remoteToLocal
* GEODE-10255 - PdxSerializable not working correctly for multiple
versions of the same class
- Reverted GEODE-8212, to solve potential issues during (de)serialization.
This is due to the fact that the server orders PdxType fields
sequentially, rather than alphabetically.
- In order to achieve what was originally intended with GEODE-8212,
now PdxInstances fields are written in alphabetical order, rather
than in the order writeXX is called.
- Also, code now should be easier to understand
- Several tests modified to adapt to code changes
- Added several UTs to further incrase coverage on PDX (de)serialization
code.
- Added several ITs to verify PDX (de)serialization scenarios.
> Refactor PDX (de)serialziation code to align it with Java client
> ----------------------------------------------------------------
>
> Key: GEODE-10276
> URL: https://issues.apache.org/jira/browse/GEODE-10276
> Project: Geode
> Issue Type: Improvement
> Components: native client
> Reporter: Mario Salazar de Torres
> Assignee: Mario Salazar de Torres
> Priority: Major
>
> Currently there are the following open issues regarding PDX (de)serialization:
> * [GEODE-9968 - Fix deserialization for new fields in PdxSerializable
> class|https://issues.apache.org/jira/browse/GEODE-9968]
> * [GEODE-9753 - Coredump during PdxSerializable object
> serialization|https://issues.apache.org/jira/browse/GEODE-9753]
> * [GEODE-10220 - Coredump while initializing PdxType
> remoteToLocal|https://issues.apache.org/jira/browse/GEODE-10220]
> * [GEODE-10255 - PdxSerializable not working correctly for multiple versions
> of the same class|https://issues.apache.org/jira/browse/GEODE-10255]
> Also, the implementation on this ticket ([GEODE-8212: Reduce connections to
> server to get type id|https://issues.apache.org/jira/browse/GEODE-8212])
> poses some issues with PDX entries which fields are a permutation. Thing is
> that PdxTypes which fields are a permutation might use the wrong offsets,
> leading to a corrupt serialization. This is something that was not taken into
> account at the time of getting this PR merged.
> So this ticket should be reverted and possibly an alternative solution
> proposed.
> In order to tackle these issues, a code refactoring is needed to introduce
> the following implementations:
> * Single type of PdxWriter
> * An implementation PdxReader that tracks unread data, and other that don't.
> * An implementation for PdxInstances that guarantees that fields are
> actually written in alphabetical order, independently of the writeFields call
> order. This should tackle the issue described above regarding GEODE-8212.
> * Also, it'd be ideal to make it so PDX code is cleaner and easier to
> understand, though that's a complex matter, and also, subjective.
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