Question

尝试使用命令bin/connect-standalone etc/kafka/connect-standalone.properties etc/kafka-connect-jdbc/quickstart-sqlserver.propertiess将数据加载到Kafka会导致显示以下错误。我检查了 kafka-connect-s3-4.0.0.jar 的内容，引用的类不在上述路径中。

[2018-04-01 22:53:55,887] INFO Loading plugin from: /opt/confluent-4.0.0/share/java/kafka-connect-s3 (org.apache.kafka.connect.runtime.isolation.DelegatingClassLoader:179)
Exception in thread "main" java.lang.NoClassDefFoundError: io/confluent/connect/storage/StorageSinkConnectorConfig
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
    at org.apache.kafka.connect.runtime.isolation.PluginClassLoader.loadClass(PluginClassLoader.java:54)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at java.lang.Class.getDeclaredConstructors0(Native Method)
    at java.lang.Class.privateGetDeclaredConstructors(Class.java:2671)
    at java.lang.Class.getConstructor0(Class.java:3075)
    at java.lang.Class.newInstance(Class.java:412)
    at org.apache.kafka.connect.runtime.isolation.DelegatingClassLoader.getPluginDesc(DelegatingClassLoader.java:279)
    at org.apache.kafka.connect.runtime.isolation.DelegatingClassLoader.scanPluginPath(DelegatingClassLoader.java:260)
    at org.apache.kafka.connect.runtime.isolation.DelegatingClassLoader.scanUrlsAndAddPlugins(DelegatingClassLoader.java:201)
    at org.apache.kafka.connect.runtime.isolation.DelegatingClassLoader.registerPlugin(DelegatingClassLoader.java:193)
    at org.apache.kafka.connect.runtime.isolation.DelegatingClassLoader.initLoaders(DelegatingClassLoader.java:153)
    at org.apache.kafka.connect.runtime.isolation.Plugins.<init>(Plugins.java:47)
    at org.apache.kafka.connect.cli.ConnectStandalone.main(ConnectStandalone.java:75)
Caused by: java.lang.ClassNotFoundException: io.confluent.connect.storage.StorageSinkConnectorConfig
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at org.apache.kafka.connect.runtime.isolation.PluginClassLoader.loadClass(PluginClassLoader.java:62)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 22 more

文件quickstart-sqlserver.properties的内容是

name=test-sqlserver-jdbc-autoincrement
connector.class=io.confluent.connect.jdbc.JdbcSourceConnector
tasks.max=1
connection.url=sqlserver://**:1433;databaseName=****;user=**;password=**
mode=incrementing
incrementing.column.name=event_nr
topic.prefix=test3-sqlserver-jdbc-
table.whitelist=support_notifications
schema.registry=dbo

connect-standalone.properties 的内容为

bootstrap.servers=localhost:9092
key.converter=org.apache.kafka.connect.json.JsonConverter
value.converter=org.apache.kafka.connect.json.JsonConverter
key.converter.schemas.enable=true
value.converter.schemas.enable=true
internal.key.converter=org.apache.kafka.connect.json.JsonConverter
internal.value.converter=org.apache.kafka.connect.json.JsonConverter
internal.key.converter.schemas.enable=false
internal.value.converter.schemas.enable=false
offset.storage.file.filename=/tmp/connect.offsets
offset.flush.interval.ms=10000
plugin.path=/opt/confluent-4.0.0/share/java

请注意，无论我是使用connect-standalone.properties文件还是使用schema-registry属性文件，我都会收到相同的错误。

Kafka连接JDBC导入无法启动

0 个答案: