I've never heard of Calcite before and dug a bit deeper into this project and found it to be quite active. Only taking into consideration changes to Java files, this is the repo activity for the last 12 months:
The community is also great. Honestly, the main thing preventing things from moving faster is lack of time to review PRs. There's a lot of interesting things in the pipe!
Yeah I can see what you mean. There are currently 20 open pull requests [1] that hasn't changed in over 28 days, which accounts for 53% of all open pulls that are less than 4 months old.
My product (https://gitsense.com) moves most of Git's history into a Postgres database and from there, you can execute the following SQL statement:
select
commit_ym AS month,
count(distinct(author_email)) as authors,
count(distinct(commit_id)) as commits,
count(distinct(path_id)) as files,
sum(total) as churn
from
z1_commits_422 as commits,
z1_changes_422 as changes,
z1_code_churn_422 as churn
where
commits.id=changes.commit_id and
changes.code_churn_id=churn.id and
lang='java'
group by commit_ym
order by commit_ym desc
limit 12
By having most of Git's history in SQL, I can slice, dice and cross-reference code history, which is how my product works.
