I'm currently upgrading from HDP 2.6.3 to HDP 3.1.0, following the docs. On my test cluster, upgrading ambari-infra-solr went fine, but on our main cluster running the backup stage failed. I restarted the ambari-infra-solr server, but it doesn't seem to have come back properly - loading the web UI shows a few GUI elements and a big "loading" spinning. Logging seems broken too - while the server is running, nothing appears in solr.log and there are log4j configuration warnings in stdout. I added a second ambari-infra-solr server, and it sees the collections but can't access the shards. Long story short, I don't particularly mind losing the content of the collections - is there an easy way to drop them and start from scratch? Thanks ... View more

I have a HDP 2.6 cluster that I want to upgrade to HDP 3.1. I currently use postgres 9.2 for Ambari, and a separate postgres 9.2 instance for Ranger and Hive. Looking at the compatibility matrix, postgres 9.2 is no longer supported for HDP 3.1. 1) Does this apply just to the postgres instance used by ambari, or also to the postgres instance used by Ranger and Hive too? 2) I'm assuming upgrading postgres isn't handled by ambari, so should I just upgrade and migrate the relevant data, keeping the connection parameters the same? Thanks in advance ... View more