Hello Mike   Likely your existing 3 Zookeeper nodes can serve your expansion requirements You can monitor the CPU and network of the Zookeeper nodes when your Kafka cluster is growing, when reaching the throughput limit, you can expand your zookeeper to 5 nodes Remember the zookeeper nodes need to keep in sync all the time, so the more zookeeper nodes the more traffic will be added to keep them in sync, while those nodes handling the Kafka requests; so it doesn't mean the more the better   I would suggest to stay with 3 zookeeper nodes while expanding your kafka cluster with close monitoring, and consider to grow to 5 when the CPU/network throughput reaching the limit   You can also consider to tune the zookeeper nodes e.g. dedicated disks, better network throughput, isolate zookeeper process, disable swaps  ... View more

Hello   If you check PI System documentation, they have a few options to extract data, like PI JDBC, Web Services etc   The performance is usually limited by the PI system side, i.e. how fast can it provides the data export ... View more

Hello   Have you tried to export the metadata first? Once you export the existing metadata, you can have a working copy of the template for your version of Atlas, you can fit your bulk metadata into that and import back to Atlas ... View more

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 is not a NiFi problem, you may try to use some online tool to help   https://jolt-demo.appspot.com/#inception ... 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