Improvements for HBase and Cassandra clients

[jbellis]

This fixes HBase to match the desired semantics of sending each insert or update to the server before calling it complete, instead of buffering them locally in the client until cleanup. The latter causes inaccurate latency to be reported.

Other changes are cosmetic.

[mbrukman]

Any update on this PR? @busbey, @jbellis — are you still working on it? Or pulling out parts of it to merge piece-meal?

[busbey]

I've been working on it off and on in my free time (when nothing else is on
fire :/ ).

I'm close; winding out the thumbtack merge has been taking the longest.
On Oct 7, 2015 5:33 PM, "Misha Brukman" notifications@github.com wrote:

Any update on this PR? @busbey https://github.com/busbey, @jbellis
https://github.com/jbellis — are you still working on it? Or pulling
out parts of it to merge piece-meal?

—
Reply to this email directly or view it on GitHub
#98 (comment).

[mbrukman]

Thanks for the update, @busbey! Looking forward to it.

[mbrukman]

@busbey — where are you in your merge effort? Would it make sense to break this PR up into separate smaller PRs and bring the functionality into the repo piecemeal, rather than try to rebase the whole thing to merge it in wholesale? As you said on another thread, the style changes may make it that much harder to pull in the entire PR all at once.

@jbellis — would you be able to help break this PR into smaller chunks?

[busbey]

Certainly smaller PRs are much easier to work in.

I've been mired in trying to back out the commit labeled "merge thumbtack" because it brings in changes the project went a different direction on.

At the moment my YCSB time is focused on trying to get our documentation in a state where we can get normal PRs for it rather using than github's wiki.