I'm getting:
org.apache.thrift.transport.TTransportException: Cannot write to null
outputStream
at
org.apache.thrift.transport.TIOStreamTransport.write(TIOStreamTransport.java:137)
at
org.apache.thrift.protocol.TBinaryProtocol.writeI32(TBinaryProtocol.java:152)
at
org.apache.thrift.protocol.TBinaryProtocol.writeMessageBegin(TBinaryProtocol.java:80)
at
org.apache.cassandra.service.Cassandra$Client.send_get_string_property(Cassandra.java:681)
at
org.apache.cassandra.service.Cassandra$Client.get_string_property(Cassandra.java:675)
at
com.atsid.cassandra.ngram.test.TestRingConnection.main(TestRingConnection.java:26)
when running:
TTransport tr = new TSocket("localhost", 9160);
TProtocol proto = new TBinaryProtocol(tr);
Cassandra.Client client = new Cassandra.Client(proto);
try {
String jsonServerList =
client.get_string_property("token map");
What am I doing wrong here?
On Wed, Mar 17, 2010 at 11:33 AM, Sonny Heer <sonnyh...@gmail.com> wrote:
> Cool thanks Todd. I'd be interested at some point to see the updated
> .6 version as well. Thanks again!
>
> On Wed, Mar 17, 2010 at 9:24 AM, B. Todd Burruss <bburr...@real.com> wrote:
>> below is the commented out code i once used. i think it is from the 0.5
>> days, so it might not even work now. not sure. the bootstrapHostArr is
>> simply a list of host information used to bootstrap the process.
>> connectToHost is a method used to generate a Cassandra.Client object.
>> there is sample code on cassandra wiki for doing this. good luck!
>>
>> // can't use this on cassandra because the tokens returned are for the
>> "internal cassandra server comm", not the thrift IPs
>> // String hostList = null;
>> // for ( HostInfo hi : bootstrapHostArr ) {
>> // Cassandra.Client client = null;
>> // try {
>> // client = connectToHost( hi.getHostName(), hi.getPort() );
>> // hostList = client.get_string_property( "token map" );
>> // break;
>> // }
>> // catch ( TTransportException e ) {
>> // logger.error( "cannot connect to bootstrap node - will try
>> another if available : " + hi.getNameAndPort() );
>> // }
>> // catch ( TException e ) {
>> // logger.error( "cannot retrieve host list from node - will
>> try another if available : " + hi.getNameAndPort() );
>> // }
>> // finally {
>> // if ( null != client ) {
>> // disconnectFromCluster( client );
>> // }
>> // }
>> // }
>> // // if ( null != hostList ) { //
>> ArrayList<String> newArr;
>> // try {
>> // JSONObject jsonObj = new JSONObject( hostList );
>> // String[] ringArr = JSONObject.getNames( jsonObj );
>> // newArr = new ArrayList<String>( ringArr.length );
>> // // for ( int i=0;i < ringArr.length;i++ ) {
>> // String hostName = jsonObj.getString( ringArr[i] );
>> // if ( !hostIgnoreSet.contains(hostName) ) {
>> // newArr.add( hostName );
>> // }
>> // }
>> // }
>> // catch ( JSONException e ) {
>> // throw new ClusterRuntimeException( "Could not parse JSON
>> returned from Cassandra - don't know what to do? ARRRRGGGG" );
>> // }
>>
>>
>> Sonny Heer wrote:
>>>
>>> Is there some example code on how to do this?
>>>
>>> On Tue, Mar 16, 2010 at 3:07 PM, Jonathan Ellis <jbel...@gmail.com> wrote:
>>>
>>>>
>>>> token map is an internal representation, so returning the internal IPs
>>>> is correct, even though this makes it slightly more difficult to use
>>>> for thrift clients.
>>>>
>>>> On Tue, Mar 16, 2010 at 4:55 PM, B. Todd Burruss <bburr...@real.com>
>>>> wrote:
>>>>
>>>>>
>>>>> if you choose #3 - get_string_property("token map") - keep in mind that
>>>>> the
>>>>> IPs returned from this call are the IPs used for "ListenAddress" param
>>>>> in
>>>>> storage-conf.xml. In my case we have two NICs and I set this to be an
>>>>> IP
>>>>> that is only for "node to node" communication. The "ThriftAddress"
>>>>> param is
>>>>> the one i really want. maybe this has been changed, "fixed" ;), haven't
>>>>> tested in a while.
>>>>>
>>>>> Jonathan Ellis wrote:
>>>>>
>>>>>>
>>>>>> http://wiki.apache.org/cassandra/FAQ#node_clients_connect_to
>>>>>>
>>>>>> On Tue, Mar 16, 2010 at 4:30 PM, Sonny Heer <sonnyh...@gmail.com>
>>>>>> wrote:
>>>>>>
>>>>>>
>>>>>>>
>>>>>>> How can I accomplish this?
>>>>>>>
>>>>>>> The way I'm doing it now it is creating a TSocket connection using a
>>>>>>> static IP of one of the boxes on Cassandra:
>>>>>>> TTransport tr = new TSocket(host, port.intValue());
>>>>>>> TProtocol proto = new TBinaryProtocol(tr);
>>>>>>> Cassandra.Client client = new Cassandra.Client(proto);
>>>>>>> tr.open();
>>>>>>>
>>>>>>> With a larger cluster I would imagine there is another preferred
>>>>>>> solution with no single point of failure (e.g. that one box goes
>>>>>>> down).
>>>>>>>
>>>>>>>
>>>>>>>
>>
>
