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https://issues.apache.org/jira/browse/RANGER-5656?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ramachandran Krishnan resolved RANGER-5656.
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Fix Version/s: 3.0.0
Resolution: Fixed
> TagSync Atlas REST sync fails with AbstractMethodError after RANGER-4076
> Jersey 2 migration
> -------------------------------------------------------------------------------------------
>
> Key: RANGER-5656
> URL: https://issues.apache.org/jira/browse/RANGER-5656
> Project: Ranger
> Issue Type: Task
> Components: Ranger
> Affects Versions: 3.0.0
> Reporter: Ramachandran Krishnan
> Assignee: Ramachandran Krishnan
> Priority: Major
> Fix For: 3.0.0
>
> Time Spent: 40m
> Remaining Estimate: 0h
>
> h2. Summary
> When {{{}TAG_SOURCE_ATLASREST_ENABLED=true{}}}, TagSync fails to sync Atlas
> classifications into Ranger because {{AtlasRESTTagSource}} still uses
> {{AtlasClientV2}} (Jersey 1.x via {{{}atlas-client-v2{}}}) while TagSync's
> Ranger REST sink uses Jersey 2.x (introduced by RANGER-4076). Both JAX-RS
> stacks load on the same JVM, causing {{AbstractMethodError}} in
> {{UriBuilderImpl}} and the Atlas REST sync thread to exit on the first poll.
> h2. Environment
> * Component: {{tagsync}} — {{AtlasRESTTagSource}}
> * Config: {{TAG_SOURCE_ATLASREST_ENABLED=true}}
> * Affected since: *RANGER-4076* (May 2026) — Jersey 1.x → Glassfish Jersey
> 2.x migration
> * Prior behavior: Worked before RANGER-4076 when TagSync also used Jersey
> 1.x ({{{}com.sun.jersey{}}})
> h2. Steps to reproduce
> # Enable Atlas REST tag source in {{{}ranger-tagsync-install.properties{}}}:
> ** {{TAG_SOURCE_ATLASREST_ENABLED=true}}
> ** {{TAG_SOURCE_ATLASREST_ENDPOINT=http://<atlas-host>:21000}}
> # Start TagSync
> # Classify a Hive column as PII (or any classification) in Atlas
> # Wait for TagSync poll interval (~60s)
> # Check Ranger Admin → Tag → resource mappings
> h2. Expected result
> * TagSync polls Atlas REST without error
> * Classifications appear in Ranger as tag resource mappings ({{{}createdBy:
> rangertagsync{}}})
> * Tag-based Hive policies (deny/mask) can enforce on synced tags
> h2. Actual result
> * TagSync process may remain up, but Atlas REST sync thread dies
> * Log shows {{AbstractMethodError}} in {{javax.ws.rs.core.UriBuilder}} /
> {{UriBuilderImpl}}
> * No automatic Atlas → Ranger tag push; Ranger tag mappings missing unless
> manually imported via REST/file
> h2. Root cause
> ||Before RANGER-4076||After RANGER-4076 (broken)||
> |{{AtlasClientV2}} (Jersey 1) + TagSync sink (Jersey 1)|{{AtlasClientV2}}
> (Jersey 1) + {{TagAdminRESTSink}} (Jersey 2)|
> Classloader isolation was attempted; it caused {{LinkageError}} /
> {{ClassCastException}} on {{{}RuntimeDelegate{}}}.
> h2. Proposed fix
> # Add {{AtlasRESTHttpClient}} — minimal Atlas REST client using
> {{HttpURLConnection}} + Atlas {{AtlasType}} JSON (no Jersey, no
> {{{}AtlasClientV2{}}})
> ** {{POST api/atlas/v2/search/basic}} — classified entity search
> ** {{GET api/atlas/v2/types/typedefs/}} — typedef load
> # Update {{AtlasRESTTagSource}} to use {{AtlasRESTHttpClient}} instead of
> {{AtlasClientV2}}
> # Remove {{atlas-client-v1}} / {{atlas-client-v2}} from {{tagsync/pom.xml}}
> # Remove {{atlas-client-*}} from {{distro/src/main/assembly/tagsync.xml}}
> runtime {{lib/}}
> *Not changed:* {{{}TagSynchronizer{}}}, {{{}TagAdminRESTSink{}}}, Atlas Kafka
> tag source, Hive plugin.
> Related issues
> * *RANGER-4076* — Jersey 1 → 2 migration
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