Sweet! That worked! THANK YOU! Stephen Thompson Wells Fargo Corporation Internet Authentication & Fraud Prevention 704.427.3137 (W) | 704.807.3431 (C)
This message may contain confidential and/or privileged information, and is intended for the use of the addressee only. If you are not the addressee or authorized to receive this for the addressee, you must not use, copy, disclose, or take any action based on this message or any information herein. If you have received this message in error, please advise the sender immediately by reply e-mail and delete this message. Thank you for your cooperation. From: Tyler Hobbs [mailto:ty...@datastax.com] Sent: Monday, February 04, 2013 1:43 PM To: user@cassandra.apache.org Subject: Re: Not enough replicas??? Sorry, to be more precise, the name of the datacenter is just the string "28", not "DC28". On Mon, Feb 4, 2013 at 12:07 PM, <stephen.m.thomp...@wellsfargo.com<mailto:stephen.m.thomp...@wellsfargo.com>> wrote: Thanks Tyler ... so I created my keyspace to explicitly indicate the datacenter and replication, as follows: create keyspace KEYSPACE_NAME with placement_strategy = 'org.apache.cassandra.locator.NetworkTopologyStrategy' and strategy_options={DC28:2}; And yet I still get the exact same error message: me.prettyprint.hector.api.exceptions.HUnavailableException: : May not be enough replicas present to handle consistency level. It certainly is showing that it took my change: [default@KEYSPACE_NAME] describe; Keyspace: KEYSPACE_NAME: Replication Strategy: org.apache.cassandra.locator.NetworkTopologyStrategy Durable Writes: true Options: [DC28:2] Looking at the ring .... [root@Config3482VM1 apache-cassandra-1.2.0]# bin/nodetool -h localhost ring Datacenter: 28 ========== Replicas: 0 Address Rack Status State Load Owns Token 9187343239835811839 10.28.205.126 205 Up Normal 95.89 KB 0.00% -9187343239835811840 10.28.205.126 205 Up Normal 95.89 KB 0.00% -9151314442816847872 10.28.205.126 205 Up Normal 95.89 KB 0.00% -9115285645797883904 ( HUGE SNIP ) 10.28.205.127 205 Up Normal 84.63 KB 0.00% 9115285645797883903 10.28.205.127 205 Up Normal 84.63 KB 0.00% 9151314442816847871 10.28.205.127 205 Up Normal 84.63 KB 0.00% 9187343239835811839 So both boxes are showing up in the ring. Thank you guys SO MUCH for helping me figure this stuff out. From: Tyler Hobbs [mailto:ty...@datastax.com<mailto:ty...@datastax.com>] Sent: Monday, February 04, 2013 11:17 AM To: user@cassandra.apache.org<mailto:user@cassandra.apache.org> Subject: Re: Not enough replicas??? RackInferringSnitch determines each node's DC and rack by looking at the second and third octets in its IP address (http://www.datastax.com/docs/1.0/cluster_architecture/replication#rackinferringsnitch), so your nodes are in DC "28". Your replication strategy says to put one replica in DC "datacenter1", but doesn't mention DC "28" at all, so you don't have any replicas for your keyspace. On Mon, Feb 4, 2013 at 7:55 AM, <stephen.m.thomp...@wellsfargo.com<mailto:stephen.m.thomp...@wellsfargo.com>> wrote: Hi Edward - thanks for responding. The keyspace could not have been created more simply: create keyspace KEYSPACE_NAME; According to the help, this should have created a replication factor of 1: Keyspace Attributes (all are optional): - placement_strategy: Class used to determine how replicas are distributed among nodes. Defaults to NetworkTopologyStrategy with one datacenter defined with a replication factor of 1 ("[datacenter1:1]"). Steve -----Original Message----- From: Edward Capriolo [mailto:edlinuxg...@gmail.com<mailto:edlinuxg...@gmail.com>] Sent: Friday, February 01, 2013 5:49 PM To: user@cassandra.apache.org<mailto:user@cassandra.apache.org> Subject: Re: Not enough replicas??? Please include the information on how your keyspace was created. This may indicate you set the replication factor to 3, when you only have 1 node, or some similar condition. On Fri, Feb 1, 2013 at 4:57 PM, <stephen.m.thomp...@wellsfargo.com<mailto:stephen.m.thomp...@wellsfargo.com>> wrote: > I need to offer my profound thanks to this community which has been so > helpful in trying to figure this system out. > > > > I've setup a simple ring with two nodes and I'm trying to insert data > to them. I get failures 100% with this error: > > > > me.prettyprint.hector.api.exceptions.HUnavailableException: : May not > be enough replicas present to handle consistency level. > > > > I'm not doing anything fancy - this is just from setting up the > cluster following the basic instructions from datastax for a simple > one data center cluster. My config is basically the default except > for the changes they discuss (except that I have configured for my IP > addresses... my two boxes are > .126 and .127) > > > > cluster_name: 'MyDemoCluster' > > num_tokens: 256 > > seed_provider: > > - class_name: org.apache.cassandra.locator.SimpleSeedProvider > > parameters: > > - seeds: "10.28.205.126" > > listen_address: 10.28.205.126 > > rpc_address: 0.0.0.0 > > endpoint_snitch: RackInferringSnitch > > > > Nodetool shows both nodes active in the ring, status = up, state = normal. > > > > For the CF: > > > > ColumnFamily: SystemEvent > > Key Validation Class: org.apache.cassandra.db.marshal.UTF8Type > > Default column value validator: > org.apache.cassandra.db.marshal.UTF8Type > > Columns sorted by: org.apache.cassandra.db.marshal.UTF8Type > > GC grace seconds: 864000 > > Compaction min/max thresholds: 4/32 > > Read repair chance: 0.1 > > DC Local Read repair chance: 0.0 > > Replicate on write: true > > Caching: KEYS_ONLY > > Bloom Filter FP chance: default > > Built indexes: [SystemEvent.IdxName] > > Column Metadata: > > Column Name: eventTimeStamp > > Validation Class: org.apache.cassandra.db.marshal.DateType > > Column Name: name > > Validation Class: org.apache.cassandra.db.marshal.UTF8Type > > Index Name: IdxName > > Index Type: KEYS > > Compaction Strategy: > org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy > > Compression Options: > > sstable_compression: > org.apache.cassandra.io.compress.SnappyCompressor > > > > Any ideas? -- Tyler Hobbs DataStax<http://datastax.com/> -- Tyler Hobbs DataStax<http://datastax.com/>
