About markus_wilhelm

markus_wilhelm · ‎07-26-2018

Seems like a error in the SQL statement threw the NullPointerException. Not really the place I would have looked with this kind of error.

mburgess · ‎07-12-2018

Once you put special characters in the table name, column names, etc. then it can cause problems for the fetch processors. Sometimes we get the table/column names from what is provided by the user in the config, and sometimes we get the table/column names from the result set(s). With special characters or other tweaks this can cause a mismatch when the processor tries to determine the last known max value, etc.

Shu_ashu · ‎07-05-2018

@Markus Wilhelm I don't think we can make NiFi to read kerberos configs to read by default but you can make use of Process group variables in your HDFS processor configs and define the variables scope as NiFi Flow so that you can use same variables across all the processors in NiFi instance. You can copy hdfs-site.xml,core-site.xml to nifi lib path and restart nifi, then you don't have to specify the path because nifi will load all the .xml from lib path, but it's not recommended way of approach because if you want to change some configs in either of these two xml files then we need to restart NiFi to take those changes in to effect in NiFi instance. Refer to this link regarding Process Group variables in NiFi and refer to this link regarding copying xml files into nifi lib.

markus_wilhelm · ‎07-06-2018

NiFi needs to be configured for HTTPS access for the SSO redirecting to work.

Shelton · ‎05-16-2018

@Markus Wilhelm I have done 100's of Kerberos setup on hadoop never encountered this particular error weird To be after to help you can you share a scrambled version of the below files /var/kerberos/krb5kdc/kadm5.acl /etc/krb5.conf /var/kerberos/krb5kdc/kdc.conf Can you ensure that all the components of your cluster BIKW are running? Validate the services are okay with "Run service Check" Make sure the below daemons are set to autostart and are running before launching the Ambari Kerberos Utility # chkconfig krb5kdc on # chkconfig kadmin on Please revert

sameer_dalai · ‎05-05-2019

Can you please let us know which spark and zeppelin version you are using? Is Kerberos is enabled in you cluster ? Below are few things to check to resolve this issue : 1)Make sure you configured livy.host and livy.group in custom-core.site (hdfs->Custom-core.site) Make sure they are configure to * for livy 2)Also you need to configure livy.superuser in your Livy interpreter too. 3)Yarn Queue access ? 4)if ranger is enabled , please make sure you have access to YARN queqe Hope this helps

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