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Posted to issues@nifi.apache.org by "ASF subversion and git services (Jira)" <ji...@apache.org> on 2023/04/05 15:43:00 UTC
[jira] [Commented] (NIFI-11342) HDFS processors fail to get ClassloaderIsolationKey at startup
[ https://issues.apache.org/jira/browse/NIFI-11342?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17708972#comment-17708972 ]
ASF subversion and git services commented on NIFI-11342:
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Commit d15eeb445bf38905166dc50a012dcd2787f62646 in nifi's branch refs/heads/main from Mark Bathori
[ https://gitbox.apache.org/repos/asf?p=nifi.git;h=d15eeb445b ]
NIFI-11342: HDFS processors fail to get ClassloaderIsolationKey at startup
This closes #7121.
Signed-off-by: Peter Turcsanyi <tu...@apache.org>
> HDFS processors fail to get ClassloaderIsolationKey at startup
> --------------------------------------------------------------
>
> Key: NIFI-11342
> URL: https://issues.apache.org/jira/browse/NIFI-11342
> Project: Apache NiFi
> Issue Type: Bug
> Reporter: Mark Bathori
> Assignee: Mark Bathori
> Priority: Major
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> At the start of NiFi, the HDFS processors fail to get ClassloaderIsolationKey when only KerberosUserService is provided. The processor tries the get the isolation key by calling the createKerberosUser method on the service but it fails because at the time of method call the controller service is in Disabled state.
> https://github.com/apache/nifi/blob/main/nifi-nar-bundles/nifi-extension-utils/nifi-hadoop-utils/src/main/java/org/apache/nifi/processors/hadoop/AbstractHadoopProcessor.java#L224
> Error message:
> {code:java}
> Failed to determine ClassLoader Isolation Key for PutHDFS[id=192e8080-0187-1000-ee4f-a7100d9d7dbb]. This could result in unexpected behavior by this processor.: org.apache.nifi.controller.service.ControllerServiceDisabledException: Cannot invoke method public abstract org.apache.nifi.security.krb.KerberosUser org.apache.nifi.kerberos.KerberosUserService.createKerberosUser() on Controller Service with identifier 0e84e32e-0187-1000-5e37-8cd7279916f6 because the Controller Service's State is currently DISABLED{code}
> The problem only occurs after NiFi restart. Adding a new HDFS processor to the canvas and setting the Kerberos UserService can properly get the isolation key.
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