zookeeper启动报错

Question

Caused by: java.lang.ClassNotFoundException: java.util.concurrent.ConcurrentHashMap not found in gnu.gcj.runtime.SystemClassLoader{urls=[file:/opt/zookeeper-3.4.9/bin/../lib/slf4j-log4j12-1.6.1.jar,file:/opt/zookeeper-3.4.9/bin/../lib/slf4j-api-1.6.1.jar,file:/opt/zookeeper-3.4.9/bin/../lib/netty-3.10.5.Final.jar,file:/opt/zookeeper-3.4.9/bin/../lib/log4j-1.2.16.jar,file:/opt/zookeeper-3.4.9/bin/../lib/jline-0.9.94.jar,file:/opt/zookeeper-3.4.9/bin/../zookeeper-3.4.9.jar,file:/opt/zookeeper-3.4.9/bin/../conf/,file:./], parent=gnu.gcj.runtime.ExtensionClassLoader{urls=[], parent=null}}
查看下，端口没有被占用，防火墙也是关闭状态，希望大神看看是什么原因导致zookeeper无法启动

Answer 1

安装oracle的jdk/jre，并且使用新的jdk/jre来运行zookeeper