Currently, SolrLogPostTool recognizes a predefined set of "types" of log messages: queries, errors, commits, etc. This makes it easy to find and explore the traffic your cluster is seeing.
But it would also be cool if we also indexed all records, even if many of them are just assigned a catch-all "other" type_s value. We won't be able to parse out detailed values from the log messages the way we would for type_s=query for example, but we can still store the line and timestamp. Gives much better search over the logs than dropping down to "grep" for anything that's not one of the predefined types.