[[ https://docs.oracle.com/javase/8/docs/api/java/nio/channels/ClosedByInterruptException.html | ClosedByInterruptException ]] happens when a thread is interrupted during an IO operation on a [[ https://docs.oracle.com/javase/8/docs/api/java/nio/channels/Channel.html | Channel ]]. This probably happens when a query deadline is reached and a query is interrupted proactively (or a similar cause). If this is the case, everything is working as expected, the logging message is just a bit confusing. Note that similar errors have been reported against blazegraph (a long time ago). The analysis there seem to indicate that there might still be a potential bug on Blazegraph side. It might be worth opening an upstream issue to check.
Frequency: ~1/minute
Logger: com.bigdata.bop.join.JVMHashJoinUtility
Message:
cause=java.lang.RuntimeException: addr=-1158298 : cause=java.lang.RuntimeException: java.nio.channels.ClosedByInterruptException, state=JVMHashJoinUtility{open=true,joinType=Normal,joinVars=[object],outputDistinctJVs=false,size=6,considered(left=0,right=0,joins=0)}Stacktrace (example):
java.lang.RuntimeException: addr=-1158298 : cause=java.lang.RuntimeException: java.nio.channels.ClosedByInterruptException at com.bigdata.rwstore.RWStore.getData(RWStore.java:2097) at com.bigdata.journal.RWStrategy.readFromLocalStore(RWStrategy.java:732) at com.bigdata.journal.RWStrategy.read(RWStrategy.java:155) at com.bigdata.journal.AbstractJournal.read(AbstractJournal.java:4307) at com.bigdata.btree.AbstractBTree.readNodeOrLeaf(AbstractBTree.java:4533) at com.bigdata.btree.Node._getChild(Node.java:2746) at com.bigdata.btree.AbstractBTree$1.compute(AbstractBTree.java:377) at com.bigdata.btree.AbstractBTree$1.compute(AbstractBTree.java:360) at com.bigdata.util.concurrent.Memoizer$1.call(Memoizer.java:77) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at com.bigdata.util.concurrent.Memoizer.compute(Memoizer.java:92) at com.bigdata.btree.AbstractBTree.loadChild(AbstractBTree.java:546) at com.bigdata.btree.Node.getChild(Node.java:2644) at com.bigdata.btree.Node.lookup(Node.java:938) at com.bigdata.btree.Node.lookup(Node.java:940) at com.bigdata.btree.Node.lookup(Node.java:940) at com.bigdata.btree.AbstractBTree.lookup(AbstractBTree.java:2455) at com.bigdata.btree.AbstractBTree.lookup(AbstractBTree.java:2383) at com.bigdata.rdf.lexicon.LexiconRelation.__getTerm(LexiconRelation.java:3233) at com.bigdata.rdf.lexicon.LexiconRelation.getValue(LexiconRelation.java:3220) at com.bigdata.rdf.lexicon.LexiconRelation.getTerm(LexiconRelation.java:3180) at org.wikidata.query.rdf.blazegraph.label.LabelService$ResolutionContext.fillBestLabels(LabelService.java:450) at org.wikidata.query.rdf.blazegraph.label.LabelService$ResolutionContext.resolve(LabelService.java:418) at org.wikidata.query.rdf.blazegraph.label.LabelService$LabelServiceCall$Chunk.next(LabelService.java:274) at org.wikidata.query.rdf.blazegraph.label.LabelService$LabelServiceCall$Chunk.next(LabelService.java:246) at com.bigdata.striterator.ChunkedWrappedIterator.nextChunk(ChunkedWrappedIterator.java:252) at com.bigdata.striterator.Chunkerator.next(Chunkerator.java:96) at com.bigdata.striterator.Chunkerator.next(Chunkerator.java:44) at com.bigdata.bop.join.JVMHashJoinUtility.hashJoin2(JVMHashJoinUtility.java:572) at com.bigdata.bop.join.JVMHashJoinUtility.hashJoin(JVMHashJoinUtility.java:534) at com.bigdata.bop.controller.ServiceCallJoin$ChunkTask$ServiceCallTask.call(ServiceCallJoin.java:628) at com.bigdata.bop.controller.ServiceCallJoin$ChunkTask$ServiceCallTask.call(ServiceCallJoin.java:552) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.RuntimeException: java.nio.channels.ClosedByInterruptException at com.bigdata.rwstore.RWStore.readRaw(RWStore.java:6752) at com.bigdata.io.writecache.WriteCacheService._readFromLocalDiskIntoNewHeapByteBuffer(WriteCacheService.java:3774) at com.bigdata.io.writecache.WriteCacheService._getRecord(WriteCacheService.java:3598) at com.bigdata.io.writecache.WriteCacheService.access$2500(WriteCacheService.java:200) at com.bigdata.io.writecache.WriteCacheService$1.compute(WriteCacheService.java:3435) at com.bigdata.io.writecache.WriteCacheService$1.compute(WriteCacheService.java:3419) at com.bigdata.util.concurrent.Memoizer$1.call(Memoizer.java:77) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at com.bigdata.util.concurrent.Memoizer.compute(Memoizer.java:92) at com.bigdata.io.writecache.WriteCacheService.loadRecord(WriteCacheService.java:3540) at com.bigdata.io.writecache.WriteCacheService.read(WriteCacheService.java:3259) at com.bigdata.rwstore.RWStore.getData(RWStore.java:2088) ... 35 common frames omitted Caused by: java.nio.channels.ClosedByInterruptException: null at java.nio.channels.spi.AbstractInterruptibleChannel.end(AbstractInterruptibleChannel.java:202) at sun.nio.ch.FileChannelImpl.readInternal(FileChannelImpl.java:746) at sun.nio.ch.FileChannelImpl.read(FileChannelImpl.java:727) at com.bigdata.io.FileChannelUtility.readAll(FileChannelUtility.java:192) at com.bigdata.rwstore.RWStore.readRaw(RWStore.java:6728) ... 46 common frames omitted