implementing Google's Cloud BigTable as an storage engine

[tartavull]

First time writting golang, please review carefully

[DocSavage]

Thanks for the pull request, Ignacio. I'll take a look.
Best, Bill

[stephenplaza]

Thanks Ignacio for this great contribution! I was able to get something up and running pretty smoothly.

I tried your code and was able to perform some DVID requests (like key/value) correctly. However, I am getting some errors when doing operations on grayscale blocks and label blocks. My guess is there is something weird going on with the range queries. I might just be doing something silly. Here is an example GET that failed after a POST for the same location:

2015/11/29 23:27:06 [plazas-lm1.home/dOeNcv4vCs-000017] Started GET "/api/node/5baa3cd510134d31a2544f027f6d295f/gray1/raw/0_1_2/32_32_32/0_0_0?throttle=on" from 127.0.0.1:60723
2015/11/29 23:27:06 INFO GetVoxels 3d volume of size dvid.Point3d{32,32,32} @ dvid.Point3d{0,0,0}: 58.793922ms
2015/11/29 23:27:06 ERROR Unable to GET data Versioned data context for "gray1" (local id 101, version id 2): rpc error: code = 3 desc = "Inverted or empty row range [AQAAAGUXAYAAAACAAAAAgAAAAA==, AQAAAGUXAYAAAACAAAAAgAAAAA==)" (/api/node/5baa3cd510134d31a2544f027f6d295f/gray1/raw/0_1_2/32_32_32/0_0_0).