Question

我正在尝试在我的Ignite键和值对象中使用java.util.Date类型字段。但是，当我开始使用Java代码在同一Ignite缓存中缓存数据时，出现以下错误。

[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)

DataKey是Ignite缓存键，其定义如下，

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;
    }
}

如链接http://apache-ignite-users.70518.x6.nabble.com/Binary-type-has-different-fields-error-td21540.html中所述，我什至从$IGNITE_HOME/work/目录中删除了内容，然后重新启动了该节点。但是仍然存在错误。是什么导致此错误？如果java.util.Date类型字段仅用于缓存值（而不用于键），也会发生相同的错误。

Answer 1

是否有可能正在运行其他节点，这些节点部署了旧版本的代码，其中timestamp是String？

请注意，在您的代码段中为tstamp，但在错误消息中为timestamp。有机会有些混乱吗？清除它，删除所有节点上的work/，然后重试。

Answer 2

问题出在ignitevisor中。我使用了Node Singleton的Ignite服务部署模式，其中在群集中的每个Ignite实例上部署了应用程序。同时，配置也已应用于ignitevisor。现在，在下一次运行期间，ignitevisor是ON的旧配置。因此，当我使用Node Singleton服务部署模式在群集上部署新应用程序时，新旧<key, value>对象类型之间会发生冲突，因为ignitevisor保留了旧配置。

在键或值中使用“日期类型”字段时，“二进制类型具有不同的字段类型”

2 个答案: