"Binary type has different field types" Error when using Date type field in Key or Value

Question

I am trying to use java.util.Date type field in my Ignite Key and Value objects. But when I start caching data in same Ignite cache using Java code, I get following error.

[12:43:01,485][SEVERE][pool-8-thread-1][] Message is ignored due to an error [msg=MessageAndMetadata(test1,2,Message(magic = 1, attributes = 0, CreateTime = -1, crc = 3705259101, key = java.nio.HeapByteBuffer[pos=0 lim=4 cap=3288], payload = java.nio.HeapByteBuffer[pos=0 lim=3280 cap=3280]),302,kafka.serializer.DefaultDecoder@2d50c6a2,kafka.serializer.DefaultDecoder@1ff7596c,-1,CreateTime)]
class org.apache.ignite.binary.BinaryObjectException: Binary type has different field types [typeName=test.demo.DataKey, fieldName=tstamp, fieldTypeName1=String, fieldTypeName2=Date]
    at org.apache.ignite.internal.binary.BinaryUtils.mergeMetadata(BinaryUtils.java:1027)
    at org.apache.ignite.internal.processors.cache.binary.BinaryMetadataTransport$MetadataUpdateProposedListener.onCustomEvent(BinaryMetadataTransport.java:293)
    at org.apache.ignite.internal.processors.cache.binary.BinaryMetadataTransport$MetadataUpdateProposedListener.onCustomEvent(BinaryMetadataTransport.java:258)
    at org.apache.ignite.internal.managers.discovery.GridDiscoveryManager$4.onDiscovery0(GridDiscoveryManager.java:707)
    at org.apache.ignite.internal.managers.discovery.GridDiscoveryManager$4.onDiscovery(GridDiscoveryManager.java:589)
    at org.apache.ignite.spi.discovery.tcp.ServerImpl$RingMessageWorker.notifyDiscoveryListener(ServerImpl.java:5479)
    at org.apache.ignite.spi.discovery.tcp.ServerImpl$RingMessageWorker.processCustomMessage(ServerImpl.java:5305)
    at org.apache.ignite.spi.discovery.tcp.ServerImpl$RingMessageWorker.processMessage(ServerImpl.java:2765)
    at org.apache.ignite.spi.discovery.tcp.ServerImpl$RingMessageWorker.processMessage(ServerImpl.java:2536)
    at org.apache.ignite.spi.discovery.tcp.ServerImpl$MessageWorkerAdapter.body(ServerImpl.java:6775)
    at org.apache.ignite.spi.discovery.tcp.ServerImpl$RingMessageWorker.body(ServerImpl.java:2621)
    at org.apache.ignite.spi.IgniteSpiThread.run(IgniteSpiThread.java:62)

Where DataKey is Ignite cache Key which is defined as follows,

package test.demo;
import java.util.Date;

public class DataKey{

    private Long sess_id ;                                                                                  
    private Long   s_id;                                                                    
    private Long   version;                                                                     
    private Date tstamp;


    public DataKey(Long sess_id, Long s_id, Long version,
            Date tstamp) {
        super();
        this.sess_id = sess_id;
        this.s_id = s_id;
        this.version = version;
        this.tstamp = tstamp;
    }


    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result
                + ((s_id == null) ? 0 : s_id.hashCode());
        result = prime * result
                + ((sess_id == null) ? 0 : sess_id.hashCode());
        result = prime * result
                + ((tstamp == null) ? 0 : tstamp.hashCode());
        result = prime * result + ((version == null) ? 0 : version.hashCode());
        return result;
    }


    @Override
    public boolean equals(Object obj) {
        if (this == obj)
            return true;
        if (obj == null)
            return false;
        if (getClass() != obj.getClass())
            return false;
        DataKey other = (DataKey) obj;
        if (s_id == null) {
            if (other.s_id != null)
                return false;
        } else if (!s_id.equals(other.s_id))
            return false;
        if (sess_id == null) {
            if (other.sess_id != null)
                return false;
        } else if (!sess_id.equals(other.sess_id))
            return false;
        if (tstamp == null) {
            if (other.tstamp != null)
                return false;
        } else if (!tstamp.equals(other.tstamp))
            return false;
        if (version == null) {
            if (other.version != null)
                return false;
        } else if (!version.equals(other.version))
            return false;
        return true;
    }
}

As mentioned in link http://apache-ignite-users.70518.x6.nabble.com/Binary-type-has-different-fields-error-td21540.html , I even deleted contents from $IGNITE_HOME/work/ directory and restarted the node. But still error is there. What is causing this error? Also same error occurs if java.util.Date type field is only used in cache value(not in key).

Answer 1

The issue was in ignitevisor. I have used Node Singleton service deployment mode of Ignite, in which application is deployed on each Ignite instance in cluster. At same time configuration was also getting applied to ignitevisor. Now during next run ignitevisor was ON with old configuration. So when I deployed new application on cluster using Node Singleton service deployment mode, there was conflict between old and new <key, value> object types, as ignitevisor was holding old configuration.