Gabriel39 commented on PR #65135:
URL: https://github.com/apache/doris/pull/65135#issuecomment-4873784992

   [P1] 
fe/be-java-extensions/iceberg-metadata-scanner/src/main/java/org/apache/doris/iceberg/IcebergSysTableJniScanner.java:66
   当前把完整 params 传给 PreExecutionAuthenticatorCache.getAuthenticator(),但 BE 的 
IcebergSysTableJniReader 会把 scan properties 统一加 hadoop. 前缀传入 JNI scanner。旧实现会 
strip 掉这个 transport prefix;现在 Kerberos 配置会变成 
hadoop.hadoop.security.authentication / 
hadoop.hadoop.kerberos.principal,AuthenticationConfig 读不到正常 key,从而回退 simple 
auth。这个会回归已有 $snapshots、$files 等 Iceberg metadata table 在 Kerberized HDFS 
catalog 上的读取。建议恢复和 Paimon/Hudi 一致的 prefix stripping,并避免 scanner-only 参数进入 
authenticator 输入。


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