BIND 10 #1762: loading huge zone crashes all

[BIND 10 Development]

#1762: loading huge zone crashes all
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                   Reporter:  jreed         |                 Owner:
                       Type:  defect        |                Status:  new
                   Priority:  low           |             Milestone:
                  Component:  Unclassified  |            Resolution:
                   Keywords:                |             Sensitive:  0
            Defect Severity:  N/A           |           Sub-Project:  DNS
Feature Depending on Ticket:                |  Estimated Difficulty:  0
        Add Hours to Ticket:  0             |           Total Hours:  0
                  Internal?:  0             |
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Changes (by shane):

 * priority:  medium => low
 * milestone:  New Tasks =>


Comment:

 Replying to [comment:2 jinmei]:
 > Replying to [comment:1 jreed]:
 >
 > > We should have the components recognize when they can't allocate
 memory and then shutdown nicely versus having confusing backtraces.
 >
 > I agree this is the desired behavior, but I'm not sure if it's
 > feasible in a python program.  Even handling a memory allocation
 > failure may require some more memory and there may be no realistic
 > exit than a crash.

 I also agree that it is not always feasible, but I note that a lot of
 these come from our message library, which could perhaps handle it a bit
 more gracefully. But yes, basically when we are out of memory in the
 general case our only option is to say "out of memory" and exit. We might
 be able to drop some cache data or something like that in special cases,
 but basically we have to exit.

 Note that in Linux you may not have any notice that you are out of memory,
 as the kernel overcommits and then kills processes to make more memory
 available:

 http://lwn.net/Articles/317814/

 I'm not sure what specific action we should take here, but I'll leave the
 ticket, although at a lower priority.

-- 
Ticket URL: <http://bind10.isc.org/ticket/1762#comment:3>
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