Github user joshelser commented on the issue:
https://github.com/apache/incubator-ratis/pull/4
> Q: May be I missed that, but I did not find truncate log method. The only
way to say to Log Service that we do need anymore records with ID <= X.
Nope, you're right. The API only lets you archive (or delete) an entire
LogStream. I think this flows a bit more naturally with what we're doing inside
of HBase already. We _could_ support intra-LogStream truncation and archival,
but I think that would complicate things quite a lot.
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