Re: Best way to load exported medium-sized graphs


carlos.bobed@...
 

Hi Marc, 

from the gremlin console, I get: 
.with(IO.reader, IO.graphml).read().iterate()] - Batch too large
org.apache.tinkerpop.gremlin.jsr223.console.RemoteException: Batch too large
at org.apache.tinkerpop.gremlin.console.jsr223.DriverRemoteAcceptor.submit(DriverRemoteAcceptor.java:184)
at org.codehaus.groovy.vmplugin.v7.IndyInterface.selectMethod(IndyInterface.java:234)
at org.apache.tinkerpop.gremlin.console.GremlinGroovysh.execute(GremlinGroovysh.groovy:110)
at org.apache.tinkerpop.gremlin.console.Console$_executeInShell_closure19.doCall(Console.groovy:419)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:101)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:323)
at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:263)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1041)
at groovy.lang.Closure.call(Closure.java:405)
at org.codehaus.groovy.runtime.DefaultGroovyMethods.eachWithIndex(DefaultGroovyMethods.java:2246)
at org.codehaus.groovy.runtime.DefaultGroovyMethods.eachWithIndex(DefaultGroovyMethods.java:2226)
at org.codehaus.groovy.runtime.DefaultGroovyMethods.eachWithIndex(DefaultGroovyMethods.java:2276)
at org.codehaus.groovy.runtime.dgm$199.doMethodInvoke(Unknown Source)
at org.codehaus.groovy.vmplugin.v7.IndyInterface.selectMethod(IndyInterface.java:234)
at org.apache.tinkerpop.gremlin.console.Console.executeInShell(Console.groovy:396)
at org.codehaus.groovy.vmplugin.v7.IndyInterface.selectMethod(IndyInterface.java:234)
at org.apache.tinkerpop.gremlin.console.Console.<init>(Console.groovy:163)
at org.codehaus.groovy.vmplugin.v7.IndyInterface.selectMethod(IndyInterface.java:234)
at org.apache.tinkerpop.gremlin.console.Console.main(Console.groovy:502)


While getting in the server log, on the one side a lot of warnings such as: 
1692178 [JanusGraph Cluster-nio-worker-1] WARN com.datastax.driver.core.RequestHandler - Query '[20 stateme
nts, 80 bound values] BEGIN UNLOGGED BATCH INSERT INTO janusgraph.edgestore (key,column1,value) VALUES (:key,
:column1,:value) USING TIMESTAMP :timestamp; INSERT INTO janusgraph.edgestore (key,column1,value) VALUES (:ke
y,:column1,:value) USING TIMESTAMP :timestamp; INSERT INTO janusgraph.edgestore (key,column1,value) VALUES (:
key,:column1,:value) USING TIMESTAMP :timestamp; INSERT INTO janusgraph.edgestore (key,column1,value) VALUES
(:key,:column1,:value) USING TIMESTAMP :timestamp; INSERT INTO janusgraph.edgestore (key,column... [truncated
output]' generated server side warning(s): Batch of prepared statements for [janusgraph.edgestore] is of siz
e 7626, exceeding specified threshold of 5120 by 2506.


And finally an exception about a temporary failure in storage backend: 
1692180 [gremlin-server-session-1] INFO org.janusgraph.diskstorage.util.BackendOperation - Temporary except
ion during backend operation [CacheMutation]. Attempting backoff retry.
42047 org.janusgraph.diskstorage.TemporaryBackendException: Temporary failure in storage backend
42048 at io.vavr.API$Match$Case0.apply(API.java:3174)
42049 at io.vavr.API$Match.of(API.java:3137)
42050 at org.janusgraph.diskstorage.cql.CQLKeyColumnValueStore.lambda$static$0(CQLKeyColumnValueStore.java:
123)
42051 at org.janusgraph.diskstorage.cql.CQLStoreManager.mutateManyUnlogged(CQLStoreManager.java:526)
42052 at org.janusgraph.diskstorage.cql.CQLStoreManager.mutateMany(CQLStoreManager.java:457)
42053 at org.janusgraph.diskstorage.locking.consistentkey.ExpectedValueCheckingStoreManager.mutateMany(Expe
ctedValueCheckingStoreManager.java:79)
42054 at org.janusgraph.diskstorage.keycolumnvalue.cache.CacheTransaction$1.call(CacheTransaction.java:94)
42055 at org.janusgraph.diskstorage.keycolumnvalue.cache.CacheTransaction$1.call(CacheTransaction.java:91)
42056 at org.janusgraph.diskstorage.util.BackendOperation.executeDirect(BackendOperation.java:68)
42057 at org.janusgraph.diskstorage.util.BackendOperation.execute(BackendOperation.java:54)
42058 at org.janusgraph.diskstorage.keycolumnvalue.cache.CacheTransaction.persist(CacheTransaction.java:91)
42059 at org.janusgraph.diskstorage.keycolumnvalue.cache.CacheTransaction.flushInternal(CacheTransaction.ja
va:133)
42060 at org.janusgraph.diskstorage.keycolumnvalue.cache.CacheTransaction.mutate(CacheTransaction.java:86)
42061 at org.janusgraph.diskstorage.keycolumnvalue.cache.KCVSCache.mutateEntries(KCVSCache.java:65)
42062 at org.janusgraph.diskstorage.BackendTransaction.mutateEdges(BackendTransaction.java:200)
42063 at org.janusgraph.graphdb.database.StandardJanusGraph.prepareCommit(StandardJanusGraph.java:628)
42064 at org.janusgraph.graphdb.database.StandardJanusGraph.commit(StandardJanusGraph.java:731)
42065 at org.janusgraph.graphdb.transaction.StandardJanusGraphTx.commit(StandardJanusGraphTx.java:1438)
42066 at org.janusgraph.graphdb.tinkerpop.JanusGraphBlueprintsGraph$GraphTransaction.doCommit(JanusGraphBlu
eprintsGraph.java:297)
42067 at org.apache.tinkerpop.gremlin.structure.util.AbstractTransaction.commit(AbstractTransaction.java:10
4)
42068 at org.apache.tinkerpop.gremlin.structure.io.graphml.GraphMLReader.readGraph(GraphMLReader.java:132)
42069 at org.apache.tinkerpop.gremlin.process.traversal.step.sideEffect.IoStep.read(IoStep.java:132)
42070 at org.apache.tinkerpop.gremlin.process.traversal.step.sideEffect.IoStep.processNextStart(IoStep.java
:110)
42071 at org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.hasNext(AbstractStep.java:14
3)
42072 at org.apache.tinkerpop.gremlin.process.traversal.step.util.ExpandableStepIterator.next(ExpandableSte
pIterator.java:50)
42073 at org.apache.tinkerpop.gremlin.process.traversal.step.filter.FilterStep.processNextStart(FilterStep.
java:37)
42074 at org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.next(AbstractStep.java:128)
42075 at org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.next(AbstractStep.java:38)
42076 at org.apache.tinkerpop.gremlin.process.traversal.Traversal.iterate(Traversal.java:207)


... 
caused by: 

42095 Caused by: java.util.concurrent.ExecutionException: com.datastax.driver.core.exceptions.InvalidQueryException
: Batch too large
42096 at com.google.common.util.concurrent.AbstractFuture$Sync.getValue(AbstractFuture.java:299)
42097 at com.google.common.util.concurrent.AbstractFuture$Sync.get(AbstractFuture.java:286)
42098 at com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:116)
42099 at io.vavr.control.Try.of(Try.java:62)
42100 at io.vavr.concurrent.FutureImpl.lambda$run$2(FutureImpl.java:199)
42101 ... 5 more
42102 Caused by: com.datastax.driver.core.exceptions.InvalidQueryException: Batch too large
42103 at com.datastax.driver.core.Responses$Error.asException(Responses.java:181)
42104 at com.datastax.driver.core.DefaultResultSetFuture.onSet(DefaultResultSetFuture.java:215)
42105 at com.datastax.driver.core.RequestHandler.setFinalResult(RequestHandler.java:235)
42106 at com.datastax.driver.core.RequestHandler.access$2600(RequestHandler.java:61)
42107 at com.datastax.driver.core.RequestHandler$SpeculativeExecution.setFinalResult(RequestHandler.java:10
11)
42108 at com.datastax.driver.core.RequestHandler$SpeculativeExecution.onSet(RequestHandler.java:814)
42109 at com.datastax.driver.core.Connection$Dispatcher.channelRead0(Connection.java:1262)
42110 at com.datastax.driver.core.Connection$Dispatcher.channelRead0(Connection.java:1180)
42111 at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:99)
42112 at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.jav
a:377)


I'll keep the logs this tiem just in case more detail is required. 

Best, 

Carlos 

Join janusgraph-users@lists.lfaidata.foundation to automatically receive all group messages.