[JENA-444] "Error 500: java.nio.charset.MalformedInputException: Input length = 1" for a federated SPARQL query with multiple triple patterns (in inner query), where one of them uses SPARQL property paths

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Jena 2.10.1, TDB 0.10.1
• Fix Version/s: Jena 2.10.1
• Component/s: ARQ, Jena

Environment

Ubuntu

• Assignee: Andy Seaborne
• Reporter: Sarven Capadisli
• Created: 23/Apr/13 19:32
• Updated: 24/May/14 13:16
• Resolved: 26/Apr/13 15:37

Description

The following query throws HttpException: java.nio.charset.MalformedInputException: Input length = 1: java.nio.charset.MalformedInputException: Input length = 1 (whether query is requested over Fuseki or TDB)

At SPARQL endpoint: http://transparency.270a.info/sparql

PREFIX qb: <http://purl.org/linked-data/cube#>

SELECT *
WHERE {
SERVICE <http://worldbank.270a.info/sparql> {
SELECT ?observationX ?componentMeasureX
WHERE

{ <http://worldbank.270a.info/dataset/AG.AGR.TRAC.NO> qb:structure/qb:component/qb:measure ?componentMeasureX . ?observationX qb:dataSet <http://worldbank.270a.info/dataset/AG.AGR.TRAC.NO> . }

}
}

Some test results:

• If either one of the triple patterns in the inner query is commented out, the query returns a response

• The inner query alone returns a response if done at http://worldbank.270a.info/sparql

• If a SPARQL property path inside SERVICE is not the only triple pattern, it throws an error.

Full error:

HttpException: java.nio.charset.MalformedInputException: Input length = 1: java.nio.charset.MalformedInputException: Input length = 1
at com.hp.hpl.jena.sparql.engine.http.HttpQuery.execCommon(HttpQuery.java:525)
at com.hp.hpl.jena.sparql.engine.http.HttpQuery.execGet(HttpQuery.java:289)
at com.hp.hpl.jena.sparql.engine.http.HttpQuery.exec(HttpQuery.java:240)
at com.hp.hpl.jena.sparql.engine.http.Service.exec(Service.java:132)
at com.hp.hpl.jena.sparql.engine.main.iterator.QueryIterService.nextStage(QueryIterService.java:51)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIterRepeatApply.makeNextStage(QueryIterRepeatApply.java:115)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIterRepeatApply.hasNextBinding(QueryIterRepeatApply.java:67)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:112)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorWrapper.hasNextBinding(QueryIteratorWrapper.java:40)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:112)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorWrapper.hasNextBinding(QueryIteratorWrapper.java:40)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:112)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorWrapper.hasNextBinding(QueryIteratorWrapper.java:40)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:112)
at com.hp.hpl.jena.sparql.engine.ResultSetStream.hasNext(ResultSetStream.java:75)
at com.hp.hpl.jena.sparql.resultset.ResultSetMem.<init>(ResultSetMem.java:97)
at com.hp.hpl.jena.query.ResultSetFactory.makeRewindable(ResultSetFactory.java:420)
at com.hp.hpl.jena.sparql.resultset.TextOutput.write(TextOutput.java:149)
at com.hp.hpl.jena.sparql.resultset.TextOutput.write(TextOutput.java:132)
at com.hp.hpl.jena.sparql.resultset.TextOutput.write(TextOutput.java:120)
at com.hp.hpl.jena.sparql.resultset.TextOutput.format(TextOutput.java:67)
at com.hp.hpl.jena.query.ResultSetFormatter.out(ResultSetFormatter.java:135)
at com.hp.hpl.jena.sparql.util.QueryExecUtils.outputResultSet(QueryExecUtils.java:157)
at com.hp.hpl.jena.sparql.util.QueryExecUtils.doSelectQuery(QueryExecUtils.java:199)
at com.hp.hpl.jena.sparql.util.QueryExecUtils.executeQuery(QueryExecUtils.java:75)
at arq.query.queryExec(query.java:187)
at arq.query.exec(query.java:144)
at arq.cmdline.CmdMain.mainMethod(CmdMain.java:101)
at arq.cmdline.CmdMain.mainRun(CmdMain.java:63)
at arq.cmdline.CmdMain.mainRun(CmdMain.java:50)
at tdb.tdbquery.main(tdbquery.java:34)
Caused by: java.nio.charset.MalformedInputException: Input length = 1
at java.nio.charset.CoderResult.throwException(CoderResult.java:277)
at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:338)
at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:177)
at java.io.InputStreamReader.read(InputStreamReader.java:184)
at java.io.BufferedReader.read1(BufferedReader.java:203)
at java.io.BufferedReader.read(BufferedReader.java:279)
at java.io.Reader.read(Reader.java:140)
at com.hp.hpl.jena.util.FileUtils.readWholeFileAsUTF8(FileUtils.java:458)
at com.hp.hpl.jena.util.FileUtils.readWholeFileAsUTF8(FileUtils.java:442)
at com.hp.hpl.jena.sparql.engine.http.HttpQuery.execCommon(HttpQuery.java:438)
... 30 more

$ java tdb.tdbquery --version
Jena: VERSION: 2.10.1-SNAPSHOT
Jena: BUILD_DATE: 2013-04-19T10:04:25+0100
ARQ: VERSION: 2.10.1-SNAPSHOT
ARQ: BUILD_DATE: 2013-04-19T10:04:25+0100
RIOT: VERSION: 2.10.1-SNAPSHOT
RIOT: BUILD_DATE: 2013-04-19T10:04:25+0100
TDB: VERSION: 0.10.1-SNAPSHOT
TDB: BUILD_DATE: 2013-04-19T10:04:25+0100