[core] Add the TimeSeriesWorkload class, a new type of workload that …

[manolama]

…uses

the existing YCSB API to generate time series data (numeric values associated
with timestamps).
See the TimeSeriesWorkload.java class Javadocs for details on how to use it
with a client and workloads/tsworkload_template for parameters.
Also add the BasicTSDB instance for printing/debugging the workloads.

[manolama]

Hi folks!
This is a new type of workload for testing time series databases. We've seen a ton of work around time series lately with IoT, monitoring, etc and it would be nice to get a common framework for benching.

Please take a look and let me know what you think of this framework. Particularly:

• Help suggest standard workloads similar to the K/V A through F configs. Right now I just a tiny tsworkloada.
• Try implementing some clients and see if parsing is acceptable.
• Let me know if any of the TODOs or other features are really needed to adequately bench our DBs.

Thanks!

[manolama]

@jasontedor If you still have cycles, I know Elastic is working hard on time series data. Would you mind taking a look at this and give me your feedback? Thanks!

[busbey]

I think we're better off getting this in, calling it experimental, and iterating. We can call it non-experimental after we have a set of standard workloads.

After this goes in can we start working on docs on wiki pages (until we manage to pull all of that out of the window I guess.)

[jasontedor]

I agree, I skimmed this and it looks like a good first cut.