[rrd-users] Behavior of 'rrdtool dump' changed after/around 1.3.4? (cdp_prep.value changed from NaN to 0)

[Till Dörges]

On 12.12.2011 20:46, Till Dörges wrote:

> I've been using RRDtool 1.3.4. After updating to 1.4.5 the output of 'rrdtool dump'
> (and rrdtool info) changed.

What I should add: The source RRD file itself didn't change. Only what 'rrdtool dump'
produces.

Regards -- Till

> rrdtool dump for 1.3.4 (and earlier afaics) used to give something like this for one
> of my files:
> 
> --- snip ---
>     <cdp_prep>
>             <ds>
>             <primary_value> NaN </primary_value>
>             <secondary_value> NaN </secondary_value>
>             <value> NaN </value>
>             <unknown_datapoints> 0 </unknown_datapoints>
>             </ds>
> --- snap ---
> 
> The current version (1.4.5) returns 0 instead of NaN:
> --- snip ---
>             <value> 0,0000000000e+00 </value>
> --- snap ---
> 
> 
> Is this safe to ignore? (And out of curiosity, what's the meaning of this change?)
> 
> 
> TIA -- Till :-)


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