incubator-cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Cyril Auburtin <cyril.aubur...@gmail.com>
Subject Re: NetworkTopologyStrategy with 1 node
Date Sat, 26 May 2012 11:36:48 GMT
I get the same issue on Cassandra 1.1:

create keyspace ks with strategy_class = 'NetworkTopologyStrategy' AND
strategy_options ={DC1:1};

then for example

[default@ks] create column family rr WITH key_validation_class=UTF8Type and
comparator = UTF8Type and column_metadata = [{column_name: boo,
validation_class: UTF8Type}];
5c6d0b86-86f2-3444-8335-fe4bdaa4745d
Waiting for schema agreement...
... schemas agree across the cluster
[default@ks] set rr['1']['boo'] = '1';
null
UnavailableException()
 at
org.apache.cassandra.thrift.Cassandra$insert_result.read(Cassandra.java:15898)
at org.apache.thrift.TServiceClient.receiveBase(TServiceClient.java:78)
 at
org.apache.cassandra.thrift.Cassandra$Client.recv_insert(Cassandra.java:788)
at org.apache.cassandra.thrift.Cassandra$Client.insert(Cassandra.java:772)
 at org.apache.cassandra.cli.CliClient.executeSet(CliClient.java:896)
at
org.apache.cassandra.cli.CliClient.executeCLIStatement(CliClient.java:213)
 at
org.apache.cassandra.cli.CliMain.processStatementInteractive(CliMain.java:219)
at org.apache.cassandra.cli.CliMain.main(CliMain.java:346)



2012/5/26 Cyril Auburtin <cyril.auburtin@gmail.com>

> thx, but still not
>
> I did:
>
> update keyspace ks with strategy_options = [{DC1:1}] and
> placement_strategy = 'org.apache.cassandra.locator.NetworkTopologyStrategy';
>
> then in cassandra-cli :
>
> [default@ks] list Position;
> Using default limit of 100
> Internal error processing get_range_slices
>
> and in cassandra console:
>
>  INFO 11:10:52,680 Keyspace updated. Please perform any manual operations.
> ERROR 11:13:37,565 Internal error processing get_range_slices
> java.lang.IllegalStateException: datacenter (DC1) has no more endpoints,
> (1) replicas still needed
> at
> org.apache.cassandra.locator.NetworkTopologyStrategy.calculateNaturalEndpoints(NetworkTopologyStrategy.java:118)
>  at
> org.apache.cassandra.locator.AbstractReplicationStrategy.getNaturalEndpoints(AbstractReplicationStrategy.java:101)
>  at
> org.apache.cassandra.service.StorageService.getLiveNaturalEndpoints(StorageService.java:1538)
>
> How do I have to set the cassndra-topology.properties for a single node in
> ths DC?
> I will try to do the same thing with C1.1, it could work
>
> 2012/5/26 Edward Capriolo <edlinuxguru@gmail.com>
>
>> replication_factor = 1 and strategy_options = [{DC1:0}]
>>
>> You should not be setting both of these.
>>
>> All you should need is:
>> strategy_options = [{DC1:1}]
>>
>> On Fri, May 25, 2012 at 1:47 PM, Cyril Auburtin
>> <cyril.auburtin@gmail.com> wrote:
>> > I was using a single node, on cassandra 0.7.10
>> >
>> > with Network strategy = SimpleStrategy, and replication factor = 1,
>> > everything is fine, I was using a consistency level of ONE, for
>> > reading/writing
>> >
>> > I have updated the keyspace to
>> >
>> > update keyspace Mymed with replication_factor = 1 and strategy_options =
>> > [{DC1:0}] and placement_strategy =
>> > 'org.apache.cassandra.locator.NetworkTopologyStrategy';
>> >
>> > with conf/cassandra-topology.properties having just this for the moment:
>> >
>> > default=DC1:r1
>> >
>> > the keyspace could update, I could use ks; also, but can't read anything
>> >
>> > even from Thrift using ConsistencyLevel.ONE; it will complain that this
>> > strategy require Quorum
>> >
>> > I tried with  ConsistencyLevel.LOCAL_QUORUM;  but get an exception like
>> :
>> >
>> > org.apache.thrift.TApplicationException: Internal error processing
>> get_slice
>> >
>> > and in cassandra console:
>> >
>> > DEBUG 19:45:02,013 Command/ConsistencyLevel is
>> > SliceFromReadCommand(table='Mymed',
>> > key='637972696c2e617562757274696e40676d61696c2e636f6d',
>> > column_parent='QueryPath(columnFamilyName='Authentication',
>> > superColumnName='null', columnName='null')', start='', finish='',
>> > reversed=false, count=100)/LOCAL_QUORUM
>> > ERROR 19:45:02,014 Internal error processing get_slice
>> > java.lang.NullPointerException
>> > at
>> >
>> org.apache.cassandra.locator.NetworkTopologyStrategy.getReplicationFactor(NetworkTopologyStrategy.java:139)
>> > at
>> >
>> org.apache.cassandra.service.DatacenterReadCallback.determineBlockFor(DatacenterReadCallback.java:83)
>> > at
>> org.apache.cassandra.service.ReadCallback.<init>(ReadCallback.java:77)
>> > at
>> >
>> org.apache.cassandra.service.DatacenterReadCallback.<init>(DatacenterReadCallback.java:48)
>> > at
>> >
>> org.apache.cassandra.service.StorageProxy.getReadCallback(StorageProxy.java:461)
>> > at
>> >
>> org.apache.cassandra.service.StorageProxy.fetchRows(StorageProxy.java:326)
>> > at org.apache.cassandra.service.StorageProxy.read(StorageProxy.java:291)
>> >
>> > So probably I guess Network topology strategy can't work with just one
>> node?
>> >
>> > thx for any feedback
>>
>
>

Mime
View raw message