b17 inconsistent bars when changing instruments

[RichardTodd]

HI, I'm on beta17, zen-fire feed. I have noticed that when I flip back and forth between instruments, I get different data sometimes when I get back to the first instrument. Only the last couple bars ever seem to be affected.

In the two screenshots I'm attaching, the same two bars have red arrows over them. You can see that their data is different. All I did in between these screenshots was flip to another instrument (via the pulldown on the left-hand side of the chart window), and flip back.

Not sure what causes this. Any ideas? Note in the earlier of the two screenshots, the last bar opens two ticks below the close of the previous bar. This is unusual in ES during the day session, even on a low volume day. When I flipped to the other chart and back, the new open I got looked realistic. So basically, when I open a chart and see an unrealistic-looking last couple-bars, I flip away and back to it, until I see something that looks right to me.

[NinjaTrader_Ray]

Richard,
The historical data server used for Zen-Fire writes the minute bars to disk several times per minute and as you make a request for historical data (intraday) you will get the most recent saved bar to disk. If on the server, ten seconds has elapsed and in that time span, a new high for that bar was seen, you of course would miss that. Part of the resolution to this of course is to maintain the current day’s historical data in memory to reduce the time span between the submitting the request and receiving the data. This is on our list for the future.