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From Vivek Mishra <mishra.v...@gmail.com>
Subject Re: InvalidRequestException(why:Not enough bytes to read value of component 0)
Date Thu, 18 Jul 2013 08:22:43 GMT
+1 for Sylvain's answer.

This normally happens, if validation class for column value(s) differs.

-Vivek


On Thu, Jul 18, 2013 at 12:08 PM, Sylvain Lebresne <sylvain@datastax.com>wrote:

> I don't know Hector very much really, but I highly suspect that
> "ts.toString()" is wrong, since composite column names are not strings. So
> again, not a Hector expert, but I can't really see how converting the
> composite into string could work.
>
> --
> Sylvain
>
>
> On Wed, Jul 17, 2013 at 11:14 PM, Rahul Gupta <rgupta@dekaresearch.com>wrote:
>
>>  Getting error while trying to persist data in a Column Family having a
>> CompositeType comparator****
>>
>> ** **
>>
>> *Using Cassandra ver 1.1.9.7*
>>
>> *Hector Core ver 1.1.5 API ( which uses Thrift 1.1.10)*
>>
>> ** **
>>
>> *Created Column Family using cassandra-cli:*
>>
>> ** **
>>
>> create column family event_counts****
>>
>> with comparator = 'CompositeType(DateType,UTF8Type)'****
>>
>> and key_validation_class = 'UUIDType'****
>>
>> and default_validation_class = 'CounterColumnType';****
>>
>> ** **
>>
>> *Persistence Code(*sumLoad.java):****
>>
>> ** **
>>
>> *import* me.prettyprint.cassandra.serializers.StringSerializer;****
>>
>> *import* me.prettyprint.cassandra.serializers.DateSerializer;****
>>
>> *import* me.prettyprint.cassandra.service.CassandraHostConfigurator;****
>>
>> *import* me.prettyprint.hector.api.Cluster;****
>>
>> *import* me.prettyprint.hector.api.Keyspace;****
>>
>> *import* me.prettyprint.hector.api.beans.Composite;****
>>
>> *import* me.prettyprint.hector.api.beans.HCounterColumn;****
>>
>> *import* me.prettyprint.hector.api.factory.HFactory;****
>>
>> *import* me.prettyprint.hector.api.mutation.Mutator;****
>>
>> *import* java.sql.Date;****
>>
>> *import* java.util.logging.Level;****
>>
>> ** **
>>
>>             *public* *class* sumLoad { ****
>>
>>             ****
>>
>>                 *final* *static* Cluster *cluster* = HFactory.*
>> getOrCreateCluster*("Dev", *new* CassandraHostConfigurator("
>> 100.10.0.6:9160"));****
>>
>>                 *final* *static* Keyspace *keyspace* = HFactory.*
>> createKeyspace*("Events", *cluster*);****
>>
>>                 *final* *static* StringSerializer *ss* =
>> StringSerializer.*get*();****
>>
>> ** **
>>
>>                 *private* *boolean* storeCounts(String vKey, String
>> counterCF, Date dateStr, String vStr, *long* value)****
>>
>>                 {****
>>
>>                             *try*****
>>
>>                             {****
>>
>>                        Mutator<String> m1 = HFactory.*createMutator*(*
>> keyspace*, StringSerializer.*get*());****
>>
>>                        ****
>>
>>                        Composite ts = *new* Composite();****
>>
>>                        ts.addComponent(dateStr, DateSerializer.*get*());*
>> ***
>>
>>                        ts.addComponent(vStr, StringSerializer.*get*());**
>> **
>>
>>                        HCounterColumn<String> hColumn_ts = HFactory.*
>> createCounterColumn*(ts.toString(), value, StringSerializer.*get*());****
>>
>>                         ****
>>
>>                        m1.insertCounter(vKey, counterCF, hColumn_ts);****
>>
>>                        m1.execute();         ****
>>
>>                        *return* *true*;****
>>
>>                             }****
>>
>>                             *catch*(Exception ex)****
>>
>>                             {****
>>
>>                                         LOGGER.*log*(Level.*WARNING*, "Unable
>> to store record", ex);                  ****
>>
>>                             }****
>>
>>                             *return* *false*;****
>>
>>                 }           ****
>>
>> ** **
>>
>>                 *public* *static* *void* main(String[] args) {****
>>
>> ** **
>>
>>                         Date vDate = *new* Date(0);****
>>
>>                         sumLoad SumLoad = *new* sumLoad();****
>>
>> SumLoad.storeCounts("b9874e3e-4a0e-4e60-ae23-c3f1e575af93",
>> "event_counts", vDate, "StoreThisString", 673);****
>>
>>                 }****
>>
>> ** **
>>
>>             }****
>>
>> ** **
>>
>> *Error:*
>>
>> ** **
>>
>> [main] INFO me.prettyprint.cassandra.service.JmxMonitor - Registering JMX
>> me.prettyprint.cassandra.service_Dev:ServiceType=hector,MonitorType=hector
>> ****
>>
>> Unable to store record****
>>
>> *me.prettyprint.hector.api.exceptions.HInvalidRequestException*:
>> InvalidRequestException(why:Not enough bytes to read value of component 0)
>> ****
>>
>> ** **
>>
>> ** **
>>
>> *Rahul Gupta*
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>
>

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