JSON logging and collection/shard/replica
Hello.
This might not be the right place to ask this (maybe log4j?), however my
question goes:
I would like a JSON log format. I'm looking at
https://logging.apache.org/log4j/2.x/manual/json-template-layout.html And can't
figure out how to access the fields referred in:
%maxLen{%d{-MM-dd HH:mm:ss.SSS} %-5p (%t)
[%notEmpty{c:%X{collection}}%notEmpty{ s:%X{shard}}%notEmpty{
r:%X{replica}}%notEmpty{ x:%X{core}}%notEmpty{ t:%X{trace_id}}] %c{1.}
%m%notEmpty{ =>%ex{short}}}{10240}%n
as collection/shard/replica. When I use resolver "mdc" (As I understand X to be
from https://logging.apache.org/log4j/2.x/manual/layouts.html#PatternLayout) in
my JSON template I get:
{"core":"corepo","rid":"null-5","trace_id":"null-5"}
Any thoughts on how to log those?
It would be awfully useful to know, if one replica is significantly slower that
the others in same shard (to monitor disk degradation).
\Morten
Re: JSON logging and collection/shard/replica
If you are getting any values from the MDC resolver, then you have the MDC
resolver configured correctly.
You're only going to get MDC values like collection/shard/replica if those
are defined for the thread that logged the message you are looking at.
In the specific example you posted...
: {"core":"corepo","rid":"null-5","trace_id":"null-5"}
...thta "core" name does not look like a a core name that solr would have
created in solr cloud mode -- it looks like maybe you are just running a
trivial example solr instance where you manually created a core? ... in
which case there is no collection/shard/replica data to include in the MDC
for that request.
-Hoss
http://www.lucidworks.com/
Re: Using min/max value of field in boost query
Check the docs for min & max functions -- they don't do what you seem to think they do... https://solr.apache.org/guide/solr/latest/query-guide/function-queries.html#max-function >> Returns the maximum numeric value of multiple nested functions or >> constants, which are specified as arguments: max(x,y,...) They also both have a pointer to the function that does do what you want... >> Use the field(myfield,max) syntax for selecting the maximum value of a >> single multivalued field. https://solr.apache.org/guide/solr/latest/query-guide/function-queries.html#field-function : Date: Tue, 2 Apr 2024 12:34:42 +0530 : From: govind nitk : Reply-To: users@solr.apache.org : To: users@solr.apache.org : Subject: Using min/max value of field in boost query : : Hi, : : currently a working solution is like: : 1. First api call - take min, max value of numeric fields say price field : 2. In another api call to solr use it like : bq="div(sub(price,min_price),sub(max_price,sum(1,min_price)))^0.05" : : above is a working solution, but its two api based. : Can we use the min/max values in boost using function queries ? : : I tried with local param reference : ex. : min_price=min(price)&max_price=max(price)&bq="div(sub(price,$min_price),sub($max_price,sum(1,$min_price)))^0.05" : : This is not giving an error, but min_price is the same as price; so : sub(price,min_price) is zero and boost finally applied is zero. : : Is there any option to achieve this? : -Hoss http://www.lucidworks.com/
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