Hadoop Datanode节点无法启动(All directories in dfs.data.dir are invalid) java.io.IOException: All directories in dfs.datanode.data.dir are invalid: "/usr/local/hadoop-2.4.0/dfs/data" at org.apache.hadoop.hdfs.server.datanode.DataNode.checkStorageLocat
启动Weblogic 时会报错.javax.xml.namespace.QName; local class incompatible: stream classdesc serialVersionUID = 4418622981026545151, local class serialVersionUID = -6756054858541526837 在网上查到是jdk 1.5的一个bug.(a threadID=600014563) 解决办法: jvm的启动参数中添加:-Dcom.sun.x