Derivatives in continuous queries don't work

[paulstuart]

Bug report

Continuous queries containing derivatives appear to run but no data is ever generated
System info: [InfluxDB 0.12.1, CentOS 6.7 64 bit VM on a dual xeon server with gobs of memory

Steps to reproduce:

1. Create a continuous query that uses a derivative grouped on multiple tag values (in initial case)
2. Take CQ from the log, remove the "into" portion, run it in cli or web client.

Expected behavior: [What you expected to happen]

One would expect to see derivatives of the data that is being sampled.

Actual behavior: [What actually happened]

Instead the records all have unset values.

Additional info: [Include gist of relevant config, logs, etc.]

The time period of the query is the same length as the interval of the derivative and therefor doesn't allow for 2 points to be sampled and compared. Extending the time period (25 seconds seems to do it) and a value of 0 is generated. It seems to take a multiple of 3 sampling periods to capture the derivative.

Please note, the quickest way to fix a bug is to open a Pull Request.

Feature Request

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Requests may be closed if we're not actively planning to work on them.

Proposal: [Description of the feature]

Current behavior: [What currently happens]

Desired behavior: [What you would like to happen]

Use case: [Why is this important (helps with prioritizing requests)]

[paulstuart]

I realized I had skipped adding the "resample" option, but it still appears to be using the grouping period to generate the time range.

[paulstuart]

I've tried all permutations of [RESAMPLE [EVERY ] [FOR ]], and the time range is still only for the grouping range.

[paulstuart]

I believe this is related to #6395

[jsternberg]

This is a duplicate of #3247. Thank you for the bug report. I'm going to close this since we have another ticket open for this issue.