BIND 10 #684: b10-xfrout uses 100% of CPU

[BIND 10 Development]

#684: b10-xfrout uses 100% of CPU
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                   Reporter:  shane  |                 Owner:  shane
                       Type:         |                Status:  assigned
  defect                             |             Milestone:
                   Priority:         |  Sprint-20110503
  critical                           |            Resolution:
                  Component:         |             Sensitive:  0
  xfrout                             |           Sub-Project:  DNS
                   Keywords:         |  Estimated Difficulty:  0.0
            Defect Severity:  N/A    |           Total Hours:  0
Feature Depending on Ticket:         |
        Add Hours to Ticket:  0      |
                  Internal?:  0      |
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Changes (by zzchen_pku):

 * owner:  zzchen_pku => shane


Comment:

 Hi, Shane,
 After looking into the code, I found when we call send_notify() for a zone
 whose notify_slaves is empty(which means the zone only has one apex ns
 record - the primary master name server), block_timeout will be set to 0,
 which will cause 100% CPU.
 The attached patch should resolve this bug.
 But I am not sure if it is the real reason for your issue, can you please
 try it and give me some feedback?

 Thanks.

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Ticket URL: <http://bind10.isc.org/ticket/684#comment:8>
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