Hello,
Is IndexSearcher ThreadSafe? I made a simple httpserver using grizzly as
described in
http://jlorenzen.blogspot.com/2007/06/using-grizzly-to-create-simple-http.html
which submit queries to a single instance of indexsearcher and I get some
errors (when I query with more then one threads) such as:
Jan 28, 2008 9:52:56 AM com.sun.grizzly.http.DefaultProcessorTaskinvokeAdapter
SEVERE: processorTask.serviceError
java.lang.NullPointerException
at org.apache.lucene.queryParser.QueryParser.jj_scan_token(
QueryParser.java:1427)
at org.apache.lucene.queryParser.QueryParser.jj_3R_3(QueryParser.java
:1319)
at org.apache.lucene.queryParser.QueryParser.jj_3_1(QueryParser.java
:1313)
at org.apache.lucene.queryParser.QueryParser.jj_2_1(QueryParser.java
:1297)
at org.apache.lucene.queryParser.QueryParser.Clause(QueryParser.java
:991)
at org.apache.lucene.queryParser.QueryParser.Query(QueryParser.java:948)
at org.apache.lucene.queryParser.QueryParser.TopLevelQuery(
QueryParser.java:937)
at org.apache.lucene.queryParser.QueryParser.parse(QueryParser.java:147)
at sys.GGSearcher.searchQuery(GGSearcher.java:70)
at sys.EmbeddedServer.service(EmbeddedServer.java:52)
at com.sun.grizzly.http.DefaultProcessorTask.invokeAdapter(
DefaultProcessorTask.java:599)
at com.sun.grizzly.http.DefaultProcessorTask.doProcess(
DefaultProcessorTask.java:530)
at com.sun.grizzly.http.DefaultProcessorTask.process(
DefaultProcessorTask.java:774)
at com.sun.grizzly.http.DefaultProtocolFilter.execute(
DefaultProtocolFilter.java:130)
at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(
DefaultProtocolChain.java:102)
at com.sun.grizzly.DefaultProtocolChain.execute(
DefaultProtocolChain.java:78)
at com.sun.grizzly.http.SelectorThread$1.execute(SelectorThread.java
:637)
at com.sun.grizzly.ProtocolChainContextTask.call(
ProtocolChainContextTask.java:61)
at com.sun.grizzly.util.WorkerThreadImpl.run(WorkerThreadImpl.java:179)
Jan 28, 2008 9:52:56 AM com.sun.grizzly.http.DefaultProcessorTaskinvokeAdapter
SEVERE: processorTask.serviceError
org.apache.lucene.queryParser.ParseException: Cannot parse 'test':
Encountered "<EOF>" at line 1, column 0.
Was expecting one of:
<NOT> ...
"+" ...
"-" ...
"(" ...
"*" ...
<QUOTED> ...
<TERM> ...
<PREFIXTERM> ...
<WILDTERM> ...
"[" ...
"{" ...
<NUMBER> ...
This error does not happen if I do searches one at a time.
Best Regards,
-C.B.
