What storage is the Fuseki server using? I can't reproduce the restart
effect.
The BOM is not 65257 (bytes xFE xFF) in a SPARQL Update request, it's
bytes xEF xBB xBF.
We are talking about what is on-the-wire which means UTF-8 encoded
unicode and codepoint 65257, U+FEFF is 3 bytes in UTF-8 xEF xBB xBF
http://unicode.org/faq/utf_bom.html#bom4
The bytes xFE xFF are illegal as UTF-8 hence the message you see.
$ echo -n $'\uFEFF' | od -t x1
==>
0000000 ef bb bf
0000003
$ echo -n $'\xFE\xFF' | od -t x1
==>
0000000 fe ff
0000002
The fact that the 500 does not say where the error in the input stream
occurs is an unfortunate effect of efficient decoding by java and by
javacc. It processes large blocks of bytes and does not say where in
the block the error occurred. This is a nuisance.
What is legal is to put the unicode encoding "\uFEFF" into the SPARQL
Update.
Andy
On 28/03/17 12:07, Andrew U Frank wrote:
thank you for your information. starting fuseki with -v gives indeed
more information. in this case i get
[2017-03-28 12:45:07] Fuseki INFO [49] POST
http://127.0.0.1:3030/memDB/update
[2017-03-28 12:45:07] Fuseki INFO [49] => Connection: close
[2017-03-28 12:45:07] Fuseki INFO [49] => User-Agent:
haskell-HTTP/4000.3.5
[2017-03-28 12:45:07] Fuseki INFO [49] => Host:
127.0.0.1:3030
[2017-03-28 12:45:07] Fuseki INFO [49] => Accept: */*
[2017-03-28 12:45:07] Fuseki INFO [49] => Content-Length: 1062
[2017-03-28 12:45:07] Fuseki INFO [49] => Content-Type:
application/sparql-update
[2017-03-28 12:45:07] Fuseki INFO [49] POST /memDB :: 'update' ::
[application/sparql-update] ?
[2017-03-28 12:45:07] Fuseki WARN [49] Runtime IO Exception (client
left?) RC = 500 : java.nio.charset.MalformedInputException: Input length = 1
org.apache.jena.atlas.RuntimeIOException:
java.nio.charset.MalformedInputException: Input length = 1
at org.apache.jena.atlas.io.IO.exception(IO.java:233)
at
org.apache.jena.fuseki.servlets.SPARQL_Update.executeBody(SPARQL_Update.java:183)
at
org.apache.jena.fuseki.servlets.SPARQL_Update.perform(SPARQL_Update.java:108)
at
org.apache.jena.fuseki.servlets.ActionSPARQL.executeLifecycle(ActionSPARQL.java:134)
at
org.apache.jena.fuseki.servlets.SPARQL_UberServlet.executeRequest(SPARQL_UberServlet.java:356)
at
org.apache.jena.fuseki.servlets.SPARQL_UberServlet.serviceDispatch(SPARQL_UberServlet.java:317)
at
org.apache.jena.fuseki.servlets.SPARQL_UberServlet.executeAction(SPARQL_UberServlet.java:272)
at
org.apache.jena.fuseki.servlets.ActionSPARQL.execCommonWorker(ActionSPARQL.java:85)
at
org.apache.jena.fuseki.servlets.ActionBase.doCommon(ActionBase.java:81)
at
org.apache.jena.fuseki.servlets.FusekiFilter.doFilter(FusekiFilter.java:73)
at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669)
at
org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61)
at
org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108)
at
org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137)
at
org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
at
org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66)
at
org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449)
at
org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365)
at
org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)
at
org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)
at
org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383)
at
org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362)
at
org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669)
at
org.apache.jena.fuseki.servlets.CrossOriginFilter.handle(CrossOriginFilter.java:285)
at
org.apache.jena.fuseki.servlets.CrossOriginFilter.doFilter(CrossOriginFilter.java:248)
at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669)
at
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:581)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at
org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)
at
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:226)
at
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1156)
at
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:511)
at
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
at
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1088)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at
org.eclipse.jetty.server.handler.gzip.GzipHandler.handle(GzipHandler.java:374)
at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:119)
at org.eclipse.jetty.server.Server.handle(Server.java:517)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:306)
at
org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:242)
at
org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:245)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95)
at
org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:75)
at
org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceAndRun(ExecuteProduceConsume.java:213)
at
org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:147)
at
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:654)
at
org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:572)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.nio.charset.MalformedInputException: Input length = 1
at java.nio.charset.CoderResult.throwException(CoderResult.java:281)
at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:339)
at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:178)
at java.io.InputStreamReader.read(InputStreamReader.java:184)
at java.io.Reader.read(Reader.java:140)
at org.apache.jena.atlas.io.IO.readWholeFileAsUTF8(IO.java:316)
at org.apache.jena.atlas.io.IO.readWholeFileAsUTF8(IO.java:298)
at
org.apache.jena.fuseki.servlets.SPARQL_Update.executeBody(SPARQL_Update.java:182)
... 47 more
[2017-03-28 12:45:07] Fuseki INFO [49] 500
java.nio.charset.MalformedInputException: Input length = 1 (4 ms)
the version is recently downloaded (2.5.0 - is there a better one?).
the transfer is using a http protocol (i think haskell ghc uses the
libcurl) and the request is now:
callHTTP5 :
request POST http://127.0.0.1:3030/memDB/update HTTP/1.1
Accept: */*
Content-Length: 1062
Content-Type: application/sparql-update
requestbody INSERT DATA { GRAPH <http://gerastree.at/fn2b>
{<http://gerastree.at/waterhouse-kw#>
<http://gerastree.at/lit_2014#titel> "(Krieg und Welt)"@de .
<http://gerastree.at/waterhouse-kw#P003>
<http://gerastree.at/lit_2014#hl1> "with bomUnsere Namen werden
lebendig"@de .
<http://gerastree.at/waterhouse-kw#P003>
<http://gerastree.at/lit_2014#inBuch>
<http://gerastree.at/waterhouse-kw#> .
<http://gerastree.at/waterhouse-kw#P003>
<http://gerastree.at/lit_2014#inPart> <http://gerastree.at/lit_2014#P000> .
<http://gerastree.at/waterhouse-kw#P003>
<http://gerastree.at/lit_2014#aufSeite> "L009" .
<http://gerastree.at/waterhouse-kw#P004>
<http://gerastree.at/lit_2014#paragraph> "Was ist ihm fremd und was sein
eigen?\n"@de .
<http://gerastree.at/waterhouse-kw#P004>
<http://gerastree.at/lit_2014#inBuch>
<http://gerastree.at/waterhouse-kw#P004> .
<http://gerastree.at/waterhouse-kw#P004>
<http://gerastree.at/lit_2014#inPart> <http://gerastree.at/lit_2014#P003> .
<http://gerastree.at/waterhouse-kw#P004>
<http://gerastree.at/lit_2014#aufSeite> "L011" .
} }
callHTTP5 result is is Right HTTP/1.1 500
java.nio.charset.MalformedInputException: Input length = 1
Date: Tue, 28 Mar 2017 10:45:07 GMT
Fuseki-Request-ID: 49
Content-Type: text/plain;charset=utf-8
Cache-Control: must-revalidate,no-cache,no-store
Pragma: no-cache
Content-Length: 134
Connection: close
which is a "not ok repsonse" and coresponds to the fact that nothing is
stored .
i thought this could be closed and assumed i had some other problem. but
then i restarted fuseki (exactly the same configuration as before
(--mem) but without the -v
and get a different response for the same request (the program producing
was not changed) - this time with a 204 answer (and no triples stored,
as for the 500 response), which is clearly not to be expected.
callHTTP5 :
request POST http://127.0.0.1:3030/memDB/update HTTP/1.1
Accept: */*
Content-Length: 1062
Content-Type: application/sparql-update
requestbody INSERT DATA { GRAPH <http://gerastree.at/fn2d>
{<http://gerastree.at/waterhouse-kw#>
<http://gerastree.at/lit_2014#titel> "with bom(Krieg und Welt)"@de .
<http://gerastree.at/waterhouse-kw#P003>
<http://gerastree.at/lit_2014#hl1> "Unsere Namen werden lebendig"@de .
<http://gerastree.at/waterhouse-kw#P003>
<http://gerastree.at/lit_2014#inBuch>
<http://gerastree.at/waterhouse-kw#> .
<http://gerastree.at/waterhouse-kw#P003>
<http://gerastree.at/lit_2014#inPart> <http://gerastree.at/lit_2014#P000> .
<http://gerastree.at/waterhouse-kw#P003>
<http://gerastree.at/lit_2014#aufSeite> "L009" .
<http://gerastree.at/waterhouse-kw#P004>
<http://gerastree.at/lit_2014#paragraph> "Was ist ihm fremd und was sein
eigen?\n"@de .
<http://gerastree.at/waterhouse-kw#P004>
<http://gerastree.at/lit_2014#inBuch>
<http://gerastree.at/waterhouse-kw#P004> .
<http://gerastree.at/waterhouse-kw#P004>
<http://gerastree.at/lit_2014#inPart> <http://gerastree.at/lit_2014#P003> .
<http://gerastree.at/waterhouse-kw#P004>
<http://gerastree.at/lit_2014#aufSeite> "L011" .
} }
callHTTP5 result is is Right HTTP/1.1 204 No Content
Date: Tue, 28 Mar 2017 10:58:33 GMT
Fuseki-Request-ID: 28
Connection: close
i hope this is enough information that you can identify a fix to allow
the 500 response to pass through.
to reproduce the problem it seems to be enough to have a BOM "\65279"
character in a triple with a literal (perhaps at the front position, but
seemingly any triple in the request triggers the error response).
thank you for your effort - i like fuseki a lot!
andrew
