On 4/8/2019 4:38 AM, Miettinen Jaana (STAT) wrote:
I have a problem in solr: I should add several (old) time stamps into my solr
documents, but all of them are in local time (UTC+2 or UTC+3 depending on
day-light-saving situation). As default solr excepts all time stamps to be in
UTC-time and adds the 'Z'-character into the end of the time stamp-strings to
indicate, that the date should be considered as UTC-time.
Is it possible to change this 'Z'-notation ? Either I would want to get rid of
that 'Z' or change it to denote UTC+2.
Solr uses UTC. The "Z" is part of the ISO standard that Solr is using.
I forget which ISO number it is. So it's always going to be there when
using a date field.
I noticed that there's variable SOLR_TIMEZONE in solr-7.6.0/bin/solr.in.sh-file. I
changed it to SOLR_TIMEZONE="EST", re-created my solr-servers, but nothing
changed. Why was that configuration file ignored (I also changed the port to check
whether it was ignored really) ? And what is the purpose of SOLR_TIMEZONE-variable ?
The timezone information affects date math. So when you have something
like NOW/WEEK or NOW/DAY, Solr knows when a new day starts and can round
the time correctly.
Timezone information does *NOT* affect the time that does into the index
or the display of information in search results.
If you want your local timezone in your output, you're going to need to
do what programs on UNIX have been doing for decades -- translating the
UTC time they can access to the configured timezone. It is rare for
Solr's results to be given directly to users -- it nearly always passes
through a custom program.
Thanks,
Shawn
