问题描述: 今天在测试环境中,搭建hbase环境,执行list命令之后,报错: hbase(main):001:0> list TABLE ERROR: org.apache.hadoop.hbase.PleaseHoldException: Master is initializing at org.apache.hadoop.hbase.master.HMaster.checkInitialized(HMaster.java:2642) at org.apache.hadoop.hbase.
[root@centos ~]# hbase shellSLF4J: Class path contains multiple SLF4J bindings.SLF4J: Found binding in [jar:file:/root/hbase/lib/slf4j-log4j12-1.7.7.jar!/org/slf4j/impl/StaticLoggerBinder.class]SLF4J: Found binding in [jar:file:/root/hadoop/share/had
在shell中有很多种命令的同义词,到底先执行的是哪一个命令呢,我们可以借助type -a命令来检查. 为了测试我们就对type本身做一条alias: alias type=type 然后我们通过type -a type查看一下,结果如下: type -a type type is aliased to `type' type is a shell builtin type is /usr/bin/type 可以清楚地看到,对于命令来说首先执行的是alias,然后是shell内嵌的命令,最后才是
[oracle@master2 test]$ more b.sh #!/bin/sh #数据库地址 ip=192.168.1.250 port sid=orcl username=c##scott password=tiger oracle_name="${username}/${password}@${ip}:${port}/${sid}" #查询一个值 QUERYRETS=`sqlplus -s /nolog <<EOF set echo off feedback of