[yt-dev] Tipsy _is_valid will deadlock loading FLASH datasets

[Nathan Goldbaum]

Hi all,

We just had a bug report from Aaron Smith at UT Austin.  The symptom is
that the "load" comman was taking 30 seconds to complete on his FLASH
dataset, which should never happen for FLASH.

After asking him to profile the code, he produced the following profile:

http://ngoldbaum.net/yt-load/

It seems that the recent changes to the Tipsy frontend which allow it to
autodetect binary outputs have made it so in some cases non-tipsy data is
loaded off disk.

I'm not sure about the best way to handle this, which is why I'm writing to
the list rather than issuing a PR.

-Nathan
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