[core] Preserve external UGI when paimon has no kerberos credentials#7862
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kerwin-zk wants to merge 1 commit into
Open
[core] Preserve external UGI when paimon has no kerberos credentials#7862kerwin-zk wants to merge 1 commit into
kerwin-zk wants to merge 1 commit into
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YannByron
approved these changes
May 15, 2026
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Purpose
When no explicit Kerberos credentials (
security.kerberos.login.keytab/security.kerberos.login.principal) are provided in catalog options,HadoopModule.install()callsUserGroupInformation.setConfiguration()and resets the JVM-global UGI auth method.This can wipe out a Kerberos TGT already established by the host process — e.g. by Spark via
spark.kerberos.principal/spark.kerberos.keytab— and cause downstream SASL / HMS callsto fail with:
Therefore, preserve the externally-established UGI when paimon has no credentials to install.
Tests
CI