Recently on stackoverflow following problem came up :
http://stackoverflow.com/questions/7103429/all-the-connections-are-in-use-execution-halted/7108799#7108799
A reproducible example: When trying
replicate(200,tryCatch(read.table("this.is.no.file"),
warning=function(w){print(showConnections());print("warning")}))
No connections are shown, but after a number of calls, suddenly the message
Error in file(file, "rt") : all connections are in use
pops up. Trying to get them deleted with closeAllConnections() causes
R to crash on Windows 7. Another user reported a segfault. (see the
link to stackoverflow)
Although I initially thought on.exit() was somehow skipped, that's not
the case. In fact, the connection couldn't be opened, so it can't be
closed either. I have no clue as to why this goes wrong, but it shows
there's something odd happening with the connections. For the record,
I am aware that the use of the warning handler in that call is rather
peculiar. But even then, R shouldn't crash.
Cheers
Joris
--
Joris Meys
Statistical consultant
Ghent University
Faculty of Bioscience Engineering
Department of Applied mathematics, biometrics and process control
tel : +32 9 264 59 87
joris.m...@ugent.be
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