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solr service stops every day

Peter_Adam_SB

OS: CentOS 7

Alfresco: 6.2.0 Community

solr: Alfresco Search Services 1.3.1 using Apache Solr 6.6.5

Java: java-11-openjdk-11.0.10.0.9-1.el7_9.x86_64

Every day the solr service stops working. The only message I was able to get in it's solr.log is "ERROR (qtp947679291-17) [ x:alfresco] o.a.s.h.RequestHandlerBase org.apache.lucene.util.automaton.TooComplexToDeterminizeException: Determinizing automaton with 15226 states and 30003 transitions would result in more than 10000 states."

In solr_oom_killer-8983-2021-05-13_17_38_52.log:

"Running OOM killer script for process 2423 for Solr on port 8983
Killed process 2423"

The issue started last week, indexes has been rebuilt since then, no effect. What can cause this error?

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Accepted answers

Peter_Adam_SB

I have changed the SOLR_JAVA_MEM="-Xms1g -Xmx1g" setting to SOLR_JAVA_MEM="-Xms1g -Xmx4g" in the solr.in.sh file.

Today there were no stops.

solr status shows now stable 1.1 GB used out of 2.3 GB.

All comments

angelborroy

Do you have additional log?

It should be required to identify the operation that is provoking this exception.

Peter_Adam_SB

I have found this in catalina.out three minutes before:

2021-05-13 17:35:08,540  INFO  [webscripts.connector.RemoteClient] [https-openssl-nio-8443-exec-18] Exceptio
n calling (GET) http://localhost:8080/alfresco/s/slingshot/search?facetFields=%7Bhttp%3A%2F%2Fwww.alfresco.o
rg%2Fmodel%2Fcontent%2F1.0%7Dcreator%2C%7Bhttp%3A%2F%2Fwww.alfresco.org%2Fmodel%2Fcontent%2F1.0%7Dcontent.mi
metype%2C%7Bhttp%3A%2F%2Fwww.alfresco.org%2Fmodel%2Fcontent%2F1.0%7Dcreated%2C%7Bhttp%3A%2F%2Fwww.alfresco.o
rg%2Fmodel%2Fcontent%2F1.0%7Dcontent.size%2C%7Bhttp%3A%2F%2Fwww.alfresco.org%2Fmodel%2Fcontent%2F1.0%7Dmodif
ier%2C%7Bhttp%3A%2F%2Fwww.alfresco.org%2Fmodel%2Fcontent%2F1.0%7Dmodified&filters=&encodedFilters=&term=0096
5806*&tag=&startIndex=0&sort=&site=&rootNode=alfresco%3A%2F%2Fcompany%2Fhome&repo=true&query=&pageSize=25&ma
xResults=0&noCache=1620920108282&spellcheck=true&highlightPrefix=%02&highlightPostfix=%03&highlightFields=cm
%3Aname%2Ccm%3Adescription%2Ccm%3Atitle%2Ccontent%2Cia%3AdescriptionEvent%2Cia%3AwhatEvent%2Clnk%3Atitle&hig
hlightFragmentSize=100&highlightSnippetCount=255&highlightMergeContiguous=false&highlightUsePhraseHighlighte
r=true&alf_ticket=TICKET_29198e4a927c3d4ee4066959751844e01f143a02

angelborroy

You could try to increase default value for maxDeterminizedStates (https://solr.apache.org/guide/6_6/tokenizers.html#Tokenizers-SimplifiedRegularExpressionPatternTokenizer) but not sure why this exception is happening.

Peter_Adam_SB

I have only the following tokenizers in my /opt/alfresco-6.2.0/alfresco-search-services/solrhome/alfresco/conf/schema.xml config file:

solr.KeywordTokenizerFactory
solr.StandardTokenizerFactory
solr.ICUTokenizerFactory
org.apache.solr.analysis.WordDelimiterFilterFactory
solr.JapaneseTokenizerFactory
org.apache.lucene.analysis.th.ThaiTokenizerFactory

Should I replace one (for example, for the Hungarian language)? Or look somewhere else?