hadoop 命令执行报错解决

ls: Failed on local exception: java.io.IOException: javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Failed to find any Kerberos tgt)];

这种报错，下载Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy Files 7 Download文件，将解压内容全部拷贝到$JAVA_HOME/jre/lib/security目录即可解决。