After I upgraded from HDP 2.6.5(ambari 2.6.2) to HDP 3.1.0 (ambari 2.7.3), I don't know why this configuration appears in the HDFS core-sit.xml configuration. <property>
<name>hadoop.proxyuser.HTTP.hosts</name>
<value>${clusterHostInfo/webhcat_server_host|append(core-site/hadoop.proxyuser.HTTP.hosts, \\,, true)}</value>
</property> This configuration leads to a startup error for my yarn use. In the earlier stage, I manually modified the value of this configuration in core-sit.xml. While I was reinstalling the other services, if it changed the core-sit.xml configuration, it came back when I restarted the service. Finally, I deleted hive, hbase, yarn and mapreduce2 and zookeeper, and cleared the local relevant data directory and the relevant directory on HDFS for re-installation. This problem would still occur in hive. I am really helpless. I have been looking through the documents related to HDP security, but I have never seen the configuration of this parameter. Accidentally clicking on "Culster Admin" > "Kerberos" > "ADVANCED" to the left of the ambari dashboard shows that there is such a parameter in the Hive related configuration. When i try to edit, and then restart, i find that the configuration in core-sit.xml has also changed. The original parameter was configured here. But problems remain. A second attempt to uninstall and reinstall Hive failed, but after all affected services were restarted, Hive was up and running. And found this configured as a host name other than HIVE METASTORE and HIVESERVER2. It's automatically configured. I'm not sure how that works. But here's how I solved it. If anyone knows the reason, please let me know, thank you And I have another question: I don't find Hive for 'Culster Admin' > 'Kerberos' >' GENERAL '>' Ambari Principals, but for kerber and AD there are Hive Principals. It is possible that I actively clicked "life-keytabs" and checked "Only for missing hosts and components".
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