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[Lance Lloyd <question253467@xxxxxxxxxxxxxxxxxxxxx>]

New question #253467 on Graphite:
https://answers.launchpad.net/graphite/+question/253467

Just installed 0.10.0, this is not a problem on our older 0.9.x instance.  I have some metrics that intentionally don't write frequently, only when there's a problem.  When requesting these metrics if the from time is after the modified time of the whisper file graphite returns "no data".  I verified this by doing a touch of the whisper file which then returns the "None,None..." as I would expect to see.

Example:
graphite@graphite1:/data/graphite/storage/whisper/Test$ date
Fri Aug 22 10:06:18 UTC 2014

graphite@graphite1:/data/graphite/storage/whisper/Test$ ls -l
total 1232
-rw-r--r-- 1 graphite graphite 1261468 Aug 22 00:32 Duration.wsp

Point being the file is greater than 9 hours old

Request a range newer than the file:
curl -si "http://graphite/render?from=-9hours&until=now&target=Test.Duration&format=raw";
No data returned

Adjust the range to be older than the file modification time:

curl -si "http://graphite/render?from=-10hours&until=now&target=Test.Duration&format=raw";
Test.Duration,1408691700,1408727700,300|None,None,None,None,None,None,None,None,None,None,None,None,None,None,None,None,None,None,None,None,None,None,None,None,None,None,None,......etc.

Then if I touch the whisper file 

graphite@graphite1:/data/graphite/storage/whisper/Test$ touch Duration.wsp

Then make the same 9 hour request again:
curl -si "http://graphite/render?from=-9hours&until=now&target=Test.Duration&format=raw";
Test.Duration,1408695600,1408728000,300|None,None,None,None,None,None,None,None,None,None,None,None,None,None,None,None,None,None,None,None,None,None,None,None,None,None,None,None,None,No.....etc.

Hope this is clear.

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