1.表象
java.util.concurrent.TimeoutException at java.util.concurrent.FutureTask.get(FutureTask.java:205) at net.sourceforge.squirrel_sql.client.mainframe.action.OpenConnectionCommand.awaitConnection(OpenConnectionCommand.java:113) at net.sourceforge.squirrel_sql.client.mainframe.action.OpenConnectionCommand.lambda$execute$1(OpenConnectionCommand.java:97) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745)
2.深究原因，找到日志在
启动SQuirreL，可以通过Windows->View SQuirrel Logs查看运行日志。
看到 could not resolve do2cloud02 , please check your network
在hosts文件加了记录后问题解决
参考：https://yq.aliyun.com/articles/630486
http://hbase.group/question/200
SQuirreL连接Phoenix报java.util.concurrent.TimeoutException
原文：https://www.cnblogs.com/hixiaowei/p/11427260.html