Question

我正在尝试使用eclipse IDE运行kafka-stream wordcount示例，但会出现以下错误：我在我的pom文件中添加了0.10.1.0 kafka-client和0.10.1.0 kafka-stream作为依赖项。我还检查了依赖树，并使用rocksdbjni-4.9 jar。基于互联网上的一些阅读，这个问题已经在kafka的0.10.1.0版本上得到修复，但我还是得到了。有什么帮助吗？

Exception in thread "StreamThread-1" java.lang.UnsatisfiedLinkError: Local\Temp\librocksdbjni6935746072594020003.dll: Can't find dependent libraries
    at java.lang.ClassLoader$NativeLibrary.load(Native Method)
    at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1937)
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1822)
    at java.lang.Runtime.load0(Runtime.java:809)
    at java.lang.System.load(System.java:1086)
    at org.rocksdb.NativeLibraryLoader.loadLibraryFromJar(NativeLibraryLoader.java:78)
    at org.rocksdb.NativeLibraryLoader.loadLibrary(NativeLibraryLoader.java:56)
    at org.rocksdb.RocksDB.loadLibrary(RocksDB.java:47)
    at org.rocksdb.RocksDB.<clinit>(RocksDB.java:23)
    at org.rocksdb.Options.<clinit>(Options.java:21)
    at org.apache.kafka.streams.state.internals.RocksDBStore.<init>(RocksDBStore.java:127)
    at org.apache.kafka.streams.state.internals.RocksDBStore.<init>(RocksDBStore.java:112)
    at org.apache.kafka.streams.state.internals.RocksDBKeyValueStoreSupplier.get(RocksDBKeyValueStoreSupplier.java:56)
    at org.apache.kafka.streams.processor.TopologyBuilder.build(TopologyBuilder.java:787)
    at org.apache.kafka.streams.processor.TopologyBuilder.build(TopologyBuilder.java:761)
    at org.apache.kafka.streams.processor.internals.StreamThread.createStreamTask(StreamThread.java:631)
    at org.apache.kafka.streams.processor.internals.StreamThread.addStreamTasks(StreamThread.java:660)
    at org.apache.kafka.streams.processor.internals.StreamThread.access$100(StreamThread.java:69)
    at org.apache.kafka.streams.processor.internals.StreamThread$1.onPartitionsAssigned(StreamThread.java:124)
    at org.apache.kafka.clients.consumer.internals.ConsumerCoordinator.onJoinComplete(ConsumerCoordinator.java:228)
    at org.apache.kafka.clients.consumer.internals.AbstractCoordinator.joinGroupIfNeeded(AbstractCoordinator.java:313)
    at org.apache.kafka.clients.consumer.internals.AbstractCoordinator.ensureActiveGroup(AbstractCoordinator.java:277)
    at org.apache.kafka.clients.consumer.internals.ConsumerCoordinator.poll(ConsumerCoordinator.java:259)
    at org.apache.kafka.clients.consumer.KafkaConsumer.pollOnce(KafkaConsumer.java:1013)
    at org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:979)
    at org.apache.kafka.streams.processor.internals.StreamThread.runLoop(StreamThread.java:407)
    at org.apache.kafka.streams.processor.internals.StreamThread.run(StreamThread.java:242)

Answer 1

Windows尚未获得官方支持。

但是，Rocksdb 4.9.0+版本应该有一个Windows DLL版本，应该可以开箱即用。

对于旧版本，还有如下所述的解决方法：http://search-hadoop.com/m/Kafka/uyzND13pNzscClkW1?subj=Re+Kafka+Streams+on+Windows+

Answer 2

从https://www.microsoft.com/en-us/download/details.aspx?id=48145安装vc_redist.x64有助于解决此问题。我在Windows10家庭版中遇到了同样的问题

使用eclipse执行kafka-stream示例，对于librocksdbjni.dll失败，出现UnsatisfiedLinkError（无法找到依赖项）

2 个答案: