zhengchenyu commented on code in PR #25428:
URL: https://github.com/apache/flink/pull/25428#discussion_r1800525208
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flink-connectors/flink-connector-hive/src/main/resources/META-INF/services/org.apache.hadoop.security.token.TokenIdentifier:
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@@ -0,0 +1,16 @@
+# Licensed to the Apache Software Foundation (ASF) under one or more
Review Comment:
@gaborgsomogyi
After fix renewer user, still throw exception like below:
```
2024-09-26 14:35:07,144 ERROR
org.apache.flink.table.security.token.HiveServer2DelegationTokenProvider [] -
Failed to obtain delegation token for HiveServer2
java.lang.NullPointerException: null
at
org.apache.flink.table.security.token.HiveServer2DelegationTokenProvider.getTokenRenewalInterval(HiveServer2DelegationTokenProvider.java:202)
~[flink-sql-connector-hive-3.1.3_2.12-1.19.1.jar:1.19.1]
at
org.apache.flink.table.security.token.HiveServer2DelegationTokenProvider.lambda$obtainDelegationTokens$0(HiveServer2DelegationTokenProvider.java:170)
~[flink-sql-connector-hive-3.1.3_2.12-1.19.1.jar:1.19.1]
...
```
I found
[tokenIdentifier](https://github.com/apache/flink/blob/da393c92db814803c9ac96c6cdd55ae444c43689/flink-connectors/flink-connector-hive/src/main/java/org/apache/flink/table/security/token/HiveServer2DelegationTokenProvider.java#L149C70-L149C85)
is null. Through further debugging, I found
HiveServer2DelegationTokenIdentifier is not in services file, then
org.apache.hadoop.security.token.Token::getClassForIdentifier can not recognize
the kind `HIVE_DELEGATION_TOKEN`, then hive2Token.decodeIdentifier() will
return null.
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