在我们的大型Titan Graph数据库中,我注意到以下行为:
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14:16:35 WARN org.apache.hadoop.util.NativeCodeLoader - Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
gremlin> g = TitanFactory.open('/home/willem/workspace/ovc/src/main/resources/titan-cassandra-es.properties')
14:16:44 WARN com.thinkaurelius.titan.graphdb.configuration.GraphDatabaseConfiguration - Local setting cache.db-cache-time=0 (Type: GLOBAL_OFFLINE) is overridden by globally managed value (180000). Use the ManagementSystem interface instead of the local configuration to control this setting.
==>titangraph[com.thinkaurelius.titan.diskstorage.cassandra.astyanax.AstyanaxStoreManager:[10.1.0.200]]
gremlin> g.indexQuery("mediaSerialNBStringIdx","v.mediaSerialNB:EB*").vertices().count()
==>937
gremlin> g.V().has("mediaSerialNB",PREFIX,"EB").count()
14:17:17 WARN com.thinkaurelius.titan.graphdb.transaction.StandardTitanTx - Query requires iterating over all vertices [(mediaSerialNB PREFIX EB)]. For better performance, use indexes …