Hi all, I'm not sure if this issue is considered solved. In case it helps, I explain how we did it. We found the same error after removing several nodes of our kerberized cluster (Ambari 2.7.4 and HDP 3.1.4). $ /usr/hdp/current/hadoop-yarn-client/bin/yarn app -status ats-hbase 20/11/02 07:04:39 INFO client.AHSProxy: Connecting to Application History server at XXXXX/YYY.YYY.YY.YY:10200 20/11/02 07:04:39 INFO client.AHSProxy: Connecting to Application History server at XXXXX/YYY.YYY.YY.YY:10200 ats-hbase Failed : HTTP error code : 500 Following this thread, we checked carefully the YARN configuration to ensure that all the variables were correctly scaled to the available nodes. After that, we destroyed the yarn app: $ yarn app -destroy ats-hbase 20/11/02 07:06:13 INFO client.AHSProxy: Connecting to Application History server at XXXXX/YYY.YYY.YY.YY:10200 20/11/02 07:06:13 INFO client.AHSProxy: Connecting to Application History server at XXXXX/YYY.YYY.YY.YY:10200 20/11/02 07:06:14 INFO client.ApiServiceClient: Successfully destroyed service ats-hbase $ /usr/hdp/current/hadoop-yarn-client/bin/yarn app -status ats-hbase 20/11/02 07:06:19 INFO client.AHSProxy: Connecting to Application History server at XXXXX/YYY.YYY.YY.YY:10200 20/11/02 07:06:19 INFO client.AHSProxy: Connecting to Application History server at XXXXX/YYY.YYY.YY.YY:10200 Service ats-hbase not found Thus, we restarted all the YARN service on ambari. Now, everything is running fine. $ /usr/hdp/current/hadoop-yarn-client/bin/yarn app -status ats-hbase 20/11/02 07:09:02 INFO client.AHSProxy: Connecting to Application History server at XXXXX/YYY.YYY.YY.YY:10200 20/11/02 07:09:02 INFO client.AHSProxy: Connecting to Application History server at XXXXX/YYY.YYY.YY.YY:10200 {"name":"ats-hbase","id":"application_1604297264331_0001","artifact":{"id":"/hdp/apps/3.1.4.0-315/hbase/rm2/hbase.tar.gz","type":"TARBALL"},"lifetime":-1,"components":[{"name":"master","dependencies":[],"artifact":{"id":"/hdp/apps/3.1.4.0-315/hbase/rm2/hbase.tar.gz","type":"TARBALL"},"resource":{"cpus":1,"memory":"4096","additional":{}},"state":"STABLE","configuration":{"properties":{"yarn.service.container-failure.retry.max":"10","yarn.service.framework.path":"/hdp/apps/3.1.4.0-315/yarn/rm2/service-dep.tar.gz"},"env":{"HBASE_LOG_PREFIX":"hbase-$HBASE_IDENT_STRING-master-$HOSTNAME","HBASE_LOGFILE":"$HBASE_LOG_PREFIX.log","HBASE_MASTER_OPTS":"-Xms3276m -Xmx3276m -Djava.security.auth.login.config=/usr/hdp/3.1.4.0-315/hadoop/conf/embedded-yarn-ats-hbase/yarn_hbase_master_jaas.conf", [...]
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