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https://issues.apache.org/jira/browse/RANGER-5718?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18100939#comment-18100939
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Ramachandran Krishnan commented on RANGER-5718:
-----------------------------------------------
Merged with master commit
details:[https://github.com/apache/ranger/commit/e8afc187e4b00c76e17f69a915b99597d323be43]
> PDP server logs NoClassDefFoundError for GsonBuilder — gson JAR missing from
> pdp tarball lib/
> ---------------------------------------------------------------------------------------------
>
> Key: RANGER-5718
> URL: https://issues.apache.org/jira/browse/RANGER-5718
> Project: Ranger
> Issue Type: Task
> Components: Ranger
> Reporter: Ramachandran Krishnan
> Assignee: Ramachandran Krishnan
> Priority: Major
> Fix For: 3.0.0
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> h2. Summary
> Ranger PDP server logs an ERROR on every plugin initialization when
> policies/tags are
> downloaded from Admin:
> {code}
> ERROR AbstractRangerAdminClient: failed to create GsonBuilder object
> java.lang.NoClassDefFoundError: com/google/gson/GsonBuilder
> Caused by: java.lang.ClassNotFoundException: com.google.gson.GsonBuilder
> {code}
> Policy download and authorization still work because RangerAdminRESTClient
> uses
> Jackson for REST JSON parsing. The error is non-fatal (caught in init(), gson
> remains null) but is noisy and indicates an incomplete PDP classpath.
> h2. Root Cause
> distro/src/main/assembly/pdp.xml uses a strict binaries <includes> whitelist
> for
> lib/ dependencies. com.google.code.gson:gson is used by
> AbstractRangerAdminClient (agents-common) but is NOT included in the
> whitelist,
> unlike other plugin assemblies (KMS, Kafka, Solr, etc.) which explicitly
> include gson.
> h2. Notes
> * Gson is used for file-based policy sources (EmbeddedResourcePolicySource,
> LocalFolderPolicySource), not the normal Admin REST download path.
> * Error occurs in PolicyRefresher.<init> →
> RangerPluginContext.createAdminClient
> → AbstractRangerAdminClient.init() during lazy plugin creation on authorize.
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