Github user Vlad-Storona commented on a diff in the pull request:
https://github.com/apache/drill/pull/774#discussion_r148957497
--- Diff: contrib/storage-opentsdb/README.md ---
@@ -0,0 +1,64 @@
+# drill-storage-openTSDB
+
+Implementation of TSDB storage plugin. Plugin uses REST API to work with
TSDB.
+
+For more information about openTSDB follow this link <http://opentsdb.net>
+
+There is list of required params:
+
+* metric - The name of a metric stored in the db.
+
+* start - The start time for the query. This can be a relative or
absolute timestamp.
+
+* aggregator - The name of an aggregation function to use.
+
+optional param is:
+
+* downsample - An optional downsampling function to reduce the amount of
data returned.
+
+* end - An end time for the query. If not supplied, the TSD will assume
the local system time on the server.
+This may be a relative or absolute timestamp. This param is optional, and
if it isn't specified we will send null
+to the db in this field, but in this case db will assume the local system
time on the server.
+
+List of supported aggregators
+
+<http://opentsdb.net/docs/build/html/user_guide/query/aggregators.html>
+
+List of supported time
+
+<http://opentsdb.net/docs/build/html/user_guide/query/dates.html>
+
+Params must be specified in FROM clause of the query separated by commas.
For example
+
+`openTSDB.(metric=metric_name, start=4d-ago, aggregator=sum)`
+
+Supported queries for now are listed below:
+
+```
+USE openTSDB
+```
+
+```
+SHOW tables
+```
+Will print available metrics. Max number of the printed results is a
Integer.MAX value
+
+```
+SELECT * FROM openTSDB. `(metric=warp.speed.test, start=47y-ago,
aggregator=sum)`
+```
+Return aggregated elements from `warp.speed.test` table since 47y-ago
+
+```
+SELECT * FROM openTSDB.`(metric=warp.speed.test, aggregator=avg,
start=47y-ago)`
+```
+Return aggregated elements from `warp.speed.test` table
+
+```
+SELECT `timestamp`, sum(`aggregated value`) FROM
openTSDB.`(metric=warp.speed.test, aggregator=avg, start=47y-ago)` GROUP BY
`timestamp`
--- End diff --
Ok, I will add it.
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