Hi all,
I am migrating a large Solr Cloud cluster from Solr 4.10 to Solr 5.5.0
and I observed big difference in query execution time.
First a setup summary:
- multiple collections - 6
- each has multiple shards - 6
- same/similar hardware
- indexing tens of messages per second
- autoSoftCommit with 1s; hard commit few tens of seconds
- Java 8
The query has following form: field1:[* TO NOW-14DAYS] OR (-field1:[* TO
*] AND field2:[* TO NOW-14DAYS])
The fields field1 & field2 are of date type:
<fieldType name="date" class="solr.TrieDateField" precisionStep="0"
positionIncrementGap="0"/>
As query (q={!cache=false}...)
Solr 4.10 -> 5s
Solr 5.5.0 -> 12s
As filter query (q={!cache=false}*:*&fq=..,)
Solr 4.10 -> 9s
Solr 5.5.0 -> 11s
The query itself is bad and its optimization aside, I am wondering if
there is anything in Lucene/Solr that would have such an impact on query
execution time between versions.
Originally I though it might be related to
https://issues.apache.org/jira/browse/SOLR-8251 and testing on small
scale proved that there is a difference in performance. However upgraded
version is already 5.5.0.
Thanks,
Jarek
