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Update 5.5.10 release notes #2294

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mscwilson merged 1 commit into from
Aug 25, 2026
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Update 5.5.10 release notes #2294

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4 changes: 3 additions & 1 deletion docs/modules/release-notes/pages/enterprise.adoc
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Expand Up @@ -24,6 +24,8 @@ For help downloading Hazelcast {enterprise-product-name}, see xref:getting-start

* **Enforced checks on classes in JsonUtil deserialization**: Some classes, which are unlikely to be used, are no longer allowed to be deserialized using JsonUtil.

* **Blocked Jackson serializable classes**: Prevented serializable Jackson classes from exposing information.

* **Ensured SQL is enabled before deserializing messages:** Applied additional hardening to prevent SQL parameters from being deserialized when SQL is not enabled.

* **Enforced checks on classes used in client protocol:** In some situations it was possible to instantiate arbitrary classes in client protocol error conditions. Strict filtering has been implemented to prevent this issue.
Expand Down Expand Up @@ -54,7 +56,7 @@ For help downloading Hazelcast {enterprise-product-name}, see xref:getting-start

* **Fixed Kafka sink failures caused by duplicate transactional IDs:** Resolved an issue where Jet jobs writing to Kafka could suspend with `ProducerFencedException` when a newer producer with the same transactional ID fenced the current producer.

* **Fixed deduplication pipeline data inconsistency after ungraceful topology changes:** Resolved an issue where ungraceful member changes during deduplication pipeline execution could leave the map and backing database with different row counts, potentially causing data loss in the database.
* **Fixed potential MapStore data loss when a member fails during a flush:** Resolved an issue where manual flush operations could clear queues before the entries were persisted.

* **Added shared `HttpClient` cache for `RestClient`:** Introduced a static cache to enable reuse of `HttpClient` instances across multiple `RestClient` instances, reducing overhead from repeated client creation.

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