Random errors and segfaults executing concurrent queries

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Random errors and segfaults executing concurrent queries

by Dominique Prunier :: Rate this Message:

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Hi,

I'm experiencing a lot of instabilities using MonetDB-Feb2009 on a
moderately big database (70GB) with 3 concurrent (read only)
connections.

In my test setup, i have 3 identical tables which i query in parallel
(from 3 jdbc connections). Almost every time, i get some weird errors:

TypeException:user.s213_7[16]:'io.s13_4' undefined in: _26:any :=
io.s13_4()

TypeException:user.s244_2[18]:'io.s14_6' undefined in: _31:any :=
io.s14_6()

TypeException:user.s236_8[31]:'io.s18_3' undefined in: _47:any :=
io.s18_3()

....

Finally, at some point, the server often segfault. Is there anything i
can do to improve this ?

Thanks,


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