Hbase Shell list命令报错znode data == null的解决办法

修复hbase Shell里面的list命令不可用

进入Hbase Shell

hbase shell

使用list命令查看所有表时报错

hbase(main):001:0> list
TABLE                                                                                                                                                                                                                                   
ERROR: Can't get master address from ZooKeeper; znode data == null
Here is some help for this command:
Show cluster status. Can be 'summary', 'simple', 'detailed', or 'replication'. The
default is 'summary'. Examples:

  hbase> status
  hbase> status 'simple'
  hbase> status 'summary'
  hbase> status 'detailed'
  hbase> status 'replication'
  hbase> status 'replication', 'source'
  hbase> status 'replication', 'sink'

重启Hbase

cd hbase-1.2.0-cdh5.7.0
bin/start-hbase.sh

重启后依旧报错，此时先关闭Hbase集群

bin/stop-hbase.sh 
stopping hbase...................

执行修复metadata命令

hbase org.apache.hadoop.hbase.util.hbck.OfflineMetaRepair     #hbase集群关闭状态下运行 

进入zookeeper command

bin/zkCli.sh

[zk: localhost:2181(CONNECTED) 0] ls /
[consumers, solr, yarn-leader-election, spark, controller_epoch, isr_change_notification, hbase, hadoop-ha, zookeeper, admin, config, kafka-manager, brokers]

[zk: localhost:2181(CONNECTED) 1] rmr /hbase

重启hbase集群

bin/start-hbase.sh

此时可以正常使用hbase shell,但是还有一个问题就是每次启动hbase的时候总会提示如下：

master running as process 12422. Stop it first.

第二种方案

如果第一种方案无法修复，那么就是第二种方案吧

在使用 Hbase shell 时，一直报错。花了半个多小时解决这个问题。解决如下：
1. 关闭Hadoop集群。
2. 格式化hdfs  进入Hadoop目录下 : 
    bin/hdfs namenode -format //丢数据
3. 启动 hadoop集群 
4. 启动 hbase集群 
5. hbase shell  
        status

报错Found inconsistency in table hbase:namespace**

ERROR: (region hbase:namespace,,1517480288768.ab4a22852177a867ae631aa109fe2b81.) Multiple regions have the same startkey: 
ERROR: (region hbase:namespace,,1523276566308.73f980027b0b2d3badb4627dc1fc5c67.) Multiple regions have the same startkey: 
2018-04-27 12:30:33,387 WARN  [main] util.HBaseFsck: reached end of problem group: null
ERROR: Found inconsistency in table hbase:namespace

解决方案:

hbase hbck       检查     #集群开启状态下运行  
hbase hbck -fix  修复     #集群开启状态下运行

hbck是hbase里用来检测 region一致性,表完整性问题及修复损坏的命令行工具。

hadoop 数据检查:

hdfs fsck /    

删除hadoop丢失的数据

hdfs fsck /   -delete

hbase数据检查

hbase fsck 

报错

ERROR: There is a hole in the region chain between  and .  You need to create a new .regioninfo and region dir in hdfs to plug the hole.
ERROR: Found inconsistency in table hbase:meta