Graham Stead-2 wrote:
>
> We have used replication for a few weeks now and it generally works well.
>
> I believe you'll find that commit operations cause only new segments to be
> transferred, whereas optimize operations cause the entire index to be
> transferred. Therefore, the amount of data transferred really depends on
> how
> frequently you index new data and how often you call <commit/> and
> <optimize/>.
>
> Hope this helps,
> -Graham
>
>
>
>
Thanks Graham. Atleast from looking at the snapshooter script, it doesn't
seem to be doing anything specific. The following is a fragment from the
script -
snap_name=snapshot.`date +"%Y%m%d%H%M%S"`
name=${data_dir}/${snap_name}
temp=${data_dir}/temp-${snap_name}
if [[ -d ${name} ]]
then
logMessage snapshot directory ${name} already exists
logExit aborted 1
fi
if [[ -d ${temp} ]]
then
logMessage snapshoting of ${name} in progress
logExit aborted 1
fi
# clean up after INT/TERM
trap 'echo cleaning up, please wait ...;/bin/rm -rf ${name} ${temp};logExit
aborted 13' INT TERM
logMessage taking snapshot ${name}
# take a snapshot using hard links into temporary location
# then move it into place atomically
cp -lr ${data_dir}/index ${temp}
mv ${temp} ${name}
--
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