after Journal Log truncate, axfr happens or ixfr happens?

[kalyanasundaram]

Hi all,
 If i mention max-journal-size is 10K and have a journal log file of
size 15 K. So after 15 min it get truncated to 9-10K. Till before that
secondary server will do ixfr. But after this truncation what will
happen? He(primary) will not have full information in the jnl file. What
is the time interval for zone transfer? Does he still ignore the moved
RRs(to db file) and do ixfr or somehow identify truncated data and do a
AXFR. Does it have any impact. Basically I am trying to understand what
it does together. 

Thanks for your help,
  -"kalyan"

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