You'll have better chances to get an answer directly on the Java driver mailing list: https://groups.google.com/a/lists.datastax.com/forum/#!forum/java-driver-user
thanks On Sat, Oct 10, 2015 at 4:30 PM, Vova Shelgunov <vvs...@gmail.com> wrote: > Hi all, > > I've tried to connect to the cassandra 3.0 cluster, using datastax java > driver, but I got the following exception when I tried to craete > MappingManager: > > Caused by: com.datastax.driver.core.exceptions.CodecNotFoundException: > Codec not found for requested operation: > [varchar <-> V] > at > com.datastax.driver.core.CodecRegistry.newException(CodecRegistry.java:647) > at > com.datastax.driver.core.CodecRegistry.createCodec(CodecRegistry.java:499) > at > com.datastax.driver.core.CodecRegistry.findCodec(CodecRegistry.java:481) > at > com.datastax.driver.core.CodecRegistry.maybeCreateCodec(CodecRegistry.java:554) > at > com.datastax.driver.core.CodecRegistry.createCodec(CodecRegistry.java:497) > at > com.datastax.driver.core.CodecRegistry.findCodec(CodecRegistry.java:481) > at > com.datastax.driver.core.CodecRegistry.access$400(CodecRegistry.java:143) > at > com.datastax.driver.core.CodecRegistry$1.load(CodecRegistry.java:295) > at > com.datastax.driver.core.CodecRegistry$1.load(CodecRegistry.java:293) > at > com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3522) > at > com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2315) > at > com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2278) > at > com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2193) > at com.google.common.cache.LocalCache.get(LocalCache.java:3932) > at > com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:3936) > at > com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:4806) > at > com.datastax.driver.core.CodecRegistry.lookupCodec(CodecRegistry.java:457) > at > com.datastax.driver.core.CodecRegistry.codecFor(CodecRegistry.java:426) > at > com.datastax.driver.core.AbstractGettableByIndexData.codecFor(AbstractGettableByIndexData.java:89) > at > com.datastax.driver.core.AbstractGettableByIndexData.getMap(AbstractGettableByIndexData.java:390) > at > com.datastax.driver.core.AbstractGettableData.getMap(AbstractGettableData.java:26) > at > com.datastax.driver.core.AbstractGettableByIndexData.getMap(AbstractGettableByIndexData.java:378) > at > com.datastax.driver.core.AbstractGettableData.getMap(AbstractGettableData.java:26) > at > com.datastax.driver.core.AbstractGettableData.getMap(AbstractGettableData.java:233) > at > com.datastax.driver.core.KeyspaceMetadata.build(KeyspaceMetadata.java:70) > at > com.datastax.driver.core.SchemaParser.buildKeyspaces(SchemaParser.java:116) > at > com.datastax.driver.core.SchemaParser.refresh(SchemaParser.java:61) > at > com.datastax.driver.core.ControlConnection.refreshSchema(ControlConnection.java:328) > at > com.datastax.driver.core.ControlConnection.tryConnect(ControlConnection.java:258) > at > com.datastax.driver.core.ControlConnection.reconnectInternal(ControlConnection.java:185) > at > com.datastax.driver.core.ControlConnection.connect(ControlConnection.java:77) > at com.datastax.driver.core.Cluster$Manager.init(Cluster.java:1372) > at com.datastax.driver.core.Cluster.init(Cluster.java:160) > at > com.datastax.driver.core.SessionManager.initAsync(SessionManager.java:75) > at > com.datastax.driver.core.SessionManager.init(SessionManager.java:67) > at > com.datastax.driver.mapping.MappingManager.getProtocolVersion(MappingManager.java:65) > at > com.datastax.driver.mapping.MappingManager.<init>(MappingManager.java:56) > > Could you please say what does it mean? > -- Bests, Alex Popescu | @al3xandru Sen. Product Manager @ DataStax