Instructions -- cloud mode is required and build instructions are missing

[elyograg]

Installation instructions do not indicate that SolrCloud is required. The Package Manager instructions in the Solr Ref Guide also do not mention that SolrCloud is required, which I will pursue with the Solr project. I only figured that out by delving into the SolrCLI code for the package manager after someone reported on the #solr slack channel that they couldn't install DIH in standalone mode.

There are no building instructions here. The build.xml in branch_9x references ../contrib-build.xml which is not included and no instructions are provided about how to prep a build environment.

I got further by attempting maven instead of ant, but there are failed tests, so I couldn't build a jar. Turning tests off allowed 9.2.1 to build, but when I updated pom.xml to build for 9.3.0, I found that the code was using a deprecated MetricsMap constructor that had been removed in 9.3.0. Commenting out the entire initializeMetrics method allowed it to build, but I do not know what consequences might occur with the removal of that overridden method.

[B0rner]

Thanks for the tip! I was also wondering whether Solr Cloud is necessary for DIH. Only the note in the installation instructions that you should use the ./server/scripts/cloud-scripts/zkcli.sh-script gave rise to the assumption that the non-cloud installation is at least not the norm. As I understand your post, the non-cloud installation is rather difficult or even impossible.

[epugh]

I'd like to see in the 10x line of Solr some sort of elimination of the "cloud" and "non cloud" mode, and instead make it easy for a single node Solr setup and then easy scaling up to many node Solrs....