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  • mac 上运行cassandra出现的java.net.MalformedURLException: Local host name unknown: java.net.UnknownHostException: : : unknown error错误解决方法

    mac 上运行cassandra出现的java.net.MalformedURLException: Local host name unknown: java.net.UnknownHostException: : : unknown error错误解决方法
     
     
    运行: ./bin/cassandra
    得到输出结果:
    objc[1881]: Class JavaLaunchHelper is implemented in both /Library/Java/JavaVirtualMachines/jdk1.8.0_25.jdk/Contents/Home/bin/java and /Library/Java/JavaVirtualMachines/jdk1.8.0_25.jdk/Contents/Home/jre/lib/libinstrument.dylib. One of the two will be used. Which one is undefined.
    CompilerOracle: inline org/apache/cassandra/db/AbstractNativeCell.compareTo (Lorg/apache/cassandra/db/composites/Composite;)I
    CompilerOracle: inline org/apache/cassandra/db/composites/AbstractSimpleCellNameType.compareUnsigned (Lorg/apache/cassandra/db/composites/Composite;Lorg/apache/cassandra/db/composites/Composite;)I
    CompilerOracle: inline org/apache/cassandra/utils/ByteBufferUtil.compare (Ljava/nio/ByteBuffer;[B)I
    CompilerOracle: inline org/apache/cassandra/utils/ByteBufferUtil.compare ([BLjava/nio/ByteBuffer;)I
    CompilerOracle: inline org/apache/cassandra/utils/ByteBufferUtil.compareUnsigned (Ljava/nio/ByteBuffer;Ljava/nio/ByteBuffer;)I
    CompilerOracle: inline org/apache/cassandra/utils/FastByteOperations$UnsafeOperations.compareTo (Ljava/lang/Object;JILjava/lang/Object;JI)I
    CompilerOracle: inline org/apache/cassandra/utils/FastByteOperations$UnsafeOperations.compareTo (Ljava/lang/Object;JILjava/nio/ByteBuffer;)I
    CompilerOracle: inline org/apache/cassandra/utils/FastByteOperations$UnsafeOperations.compareTo (Ljava/nio/ByteBuffer;Ljava/nio/ByteBuffer;)I
    错误: 代理抛出异常错误: java.net.MalformedURLException: Local host name unknown: java.net.UnknownHostException: : : unknown error
     
    初期总以为第一个错误导致的问题:
    objc[1881]: Class JavaLaunchHelper is implemented in both /Library/Java/JavaVirtualMachines/jdk1.8.0_25.jdk/Contents/Home/bin/java and /Library/Java/JavaVirtualMachines/jdk1.8.0_25.jdk/Contents/Home/jre/lib/libinstrument.dylib. One of the two will be used. Which one is undefined.
     
    然后搜寻stackoverflow, 说是mac上java7的一个漏洞,然后就更换了java8,统一了jre 和 jdk的版本到上面的1.8.0 update 25.
    结果还是一样。 
     
    然后,我只要把原因转移到最后的MalformedURLException上,自己查看了hosts, 发现完全正常,实在无法子,今天又到另外的一台mac上安装了相同版本的java,启动cassandra,完全正常,唯独就是我自己的mac 不行。
     
    无意中发现了一个方法, 参见附录一中的URL链接:
     
    使用  scutils —get HostName 命令查看当前的hostname , 尽然是空。
    然后使用  scutils  —set HostName localhost   , 之后重新启动cassandra, 完全正常了。
     
     
    参考:
     
     
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  • 原文地址:https://www.cnblogs.com/ToDoToTry/p/4176064.html
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