When posting a correct big Sparql-File ( containing deletes and updates) using curl,
curl -X POST --data-binary @hashtag.sparql -H "Accept: application/rdf+xml" -H "Content-type: application/sparql-update" http://localhost:7200/repositories/test/statements
i get the following error message
Handler dispatch failed; nested exception is java.lang.StackOverflowError
and the log files contain
at org.eclipse.rdf4j.query.parser.sparql.ast.SyntaxTreeBuilder.UpdateSequence(SyntaxTreeBuilder.java:116)
Is this something i can fix somehow or is this a bug in GraphDB?
This is a problem in the RDF4J SPARQL parser used by GraphDB, which uses a recursive call to parse update sequences. Apparently, your update sequence is too large for the default JVM stack on your system.
You can work around this by configuring you JVM to use a larger stack (e.g. -Xss:512k or whatever size you find you need), or alternatively by splitting your big update file into two.
The root cause will need a fix in the SPARQL parser though. I've logged a bug report for this issue with that in mind: https://github.com/eclipse/rdf4j/issues/3328 .