flink最新master代码编译出现Java Runtime Environment 问题
请问一下大佬们 我想编译一下flink源码，把flink fork到了了自己仓库，然后 git clone 自己仓库。然后执行官网上得 mvn clean install -DskipTests命令（我用jdk8跟jdk11都试过了）。出现以下报错： A fatal error has been d...
Dungeon Master（三维bfs）java
题意：You are trapped in a 3D dungeon and need to find the quickest way out! The dungeon is composed of unit cubes which may or may not be filled with ro...
Caused by: java.net.ConnectException: Call From master/192.168.199.130 to master:9000 failed on connection exception: java.net.ConnectException: Conne
1：安装好hive，准备启动的时候出现下面的错误（由于hive是基于Hadoop的，所以必须先将你的集群启动起来，我就是没有启动集群，直接启动hive导致的错误）： 1 [root@master bin]# ./hive 2 3 Logging initialized using configura...
Oracle Certified Master For Java EE 5/6 Comes
今天刚发现原来Java EE 也有Oracle Certified Master(OCM)认证了: Oracle Certified Master, Java EE 5 Enterprise Architect (includes Sun Certified Enterprise Ar...
Hbase master启动报错：Failed construction of Master: class org.apache.hadoop.hbase.master.HMaster Caused by: java.net.UnknownHostException:
Hbase master启动报错： java.lang.RuntimeException: Failed construction of Master: class org.apache.hadoop.hbase.master.HMaster at org.apache.hadoop.hbase.m...
Call to master/192.168.137.101:9001 failed on connection exception: java.net.ConnectException: Connection refused
java.net.ConnectException: Call to master/192.168.137.101:9001 failed on connection exception: java.net.ConnectException: Connection refused at ...
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