Hello   Firstly, identify the issues with the node, replace any faulty hardware if necessary You can follow the below post for the procedure  https://community.cloudera.com/t5/Community-Articles/Adding-nodes-to-an-HDP-cluster/ta-p/245386 ... View more

Hello   Perform the following in CM   "Load Balancer Advanced Configuration Snippet (Safety Valve) for httpd.conf" Add following into above text box: ProxyTimeout 3600   ... View more

Hello   This may be related to the way you use Hue   For example, if you uploading a large file using Import to table option, you may hit the proxy timeout issue, (by default, the timeout is 600 seconds), you can try to increase the proxy timeout option to a larger value, or you can optimise how you get large data files into the cluster by using other tools like NiFi etc ... View more

Hello   You can refer here: https://stackoverflow.com/questions/55070778/extract-only-the-columns-header-from-the-csv-file-using-nifi ... View more

Hello   Since it is related to Load Balancer, you can take a look of your configurations   # cluster load balancing properties # nifi.cluster.load.balance.host=192.170.108.140 nifi.cluster.load.balance.port=6342 nifi.cluster.load.balance.connections.per.node=50 nifi.cluster.load.balance.max.thread.count=600 nifi.cluster.load.balance.comms.timeout=45 sec   For example nifi.cluster.load.balance.connections.per.node=50   The maximum number of connections to create between this node and each other node in the cluster. For example, if there are 5 nodes in the cluster and this value is set to 4, there will be up to 20 socket connections established for load-balancing purposes (5 x 4 = 20). The default value is 4.   Now you set it to 50, not sure how many nodes you got, you can do the math   The rest of the configuration details you can refer here:  https://docs.cloudera.com/HDPDocuments/HDF3/HDF-3.5.1/nifi-system-properties/content/cluster_node_properties.html ... View more

Hello   Can you review this post and check the whether Hive namespace is created in ZK?   https://community.cloudera.com/t5/Support-Questions/How-to-resolve-Unable-to-read-HiveServer2-configs-from/td-p/233701 ... View more