java.net.SocketException: Connection reset when running an specific query (q1.xml)

[regispires]

That occurs when I try to execute q1.xml query in qefweb. It works when qef is used alone.
When I limited the query in the left side of the join to 20000 results the execution worked fine.

Ser der um limit 20000 no lado esquerdo do join, a execução da consulta funciona.
14:23:29,742 ERROR ~ java.net.SocketException: Connection reset
HttpException: java.net.SocketException: Connection reset: java.net.SocketException: Connection reset
at com.hp.hpl.jena.sparql.engine.http.HttpQuery.execCommon(HttpQuery.java:371)
at com.hp.hpl.jena.sparql.engine.http.HttpQuery.execPost(HttpQuery.java:255)
at com.hp.hpl.jena.sparql.engine.http.HttpQuery.exec(HttpQuery.java:156)
at com.hp.hpl.jena.sparql.engine.http.QueryEngineHTTP.execSelect(QueryEngineHTTP.java:161)
at ch.epfl.codimsd.qeef.sparql.datasource.SparqlEndpointDataSource.read(SparqlEndpointDataSource.java:98)
at ch.epfl.codimsd.qeef.sparql.operator.Service.getNext(Service.java:35)
at ch.epfl.codimsd.qeef.sparql.operator.SetBindJoinResultProcessor.fillResultBuffer(SetBindJoinResultProcessor.java:73)
at ch.epfl.codimsd.qeef.sparql.operator.SetBindJoinResultProcessor.run(SetBindJoinResultProcessor.java:56)
at java.lang.Thread.run(Thread.java:722)
Caused by: java.net.SocketException: Connection reset
at java.net.SocketInputStream.read(SocketInputStream.java:189)
at java.net.SocketInputStream.read(SocketInputStream.java:121)
at java.io.BufferedInputStream.fill(BufferedInputStream.java:235)
at java.io.BufferedInputStream.read1(BufferedInputStream.java:275)
at java.io.BufferedInputStream.read(BufferedInputStream.java:334)
at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:633)
at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:579)
at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:604)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1322)
at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:468)
at com.hp.hpl.jena.sparql.engine.http.HttpQuery.execCommon(HttpQuery.java:297)
... 8 more