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解決啟動hbase出現ERROR: Can‘t get master address from ZooKeeper; znode data == null

啟動hbase正常,但是用list指令時報錯:

ERROR: Can’t get master address from ZooKeeper; znode data == null

Here is some help for this command:

List all user tables in hbase. Optional regular expression parameter could

be used to filter the output. Examples:

hbase> list

hbase> list ‘abc.’

hbase> list 'ns:abc.’

hbase> list ‘ns:.*’

先檢視hbase的日志檔案,出現如下錯誤:

2021-12-08 23:51:35,101 FATAL [hadoop01:16000.activeMasterManager] master.HMaster: Failed to become active master

org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.ipc.StandbyException): Operation category READ is not supported in state standby

解決:

①說明了與節點的active和standby有關,我的情況是三台高可用hadoop,其中主節點hadoop01是standby,hadoop02是active,但是還是會報錯,我主動幹預zookeeper選舉,把hadoop01設定成active,hadoop02設定成standby,結果就成功了

主動幹預zookeeper選舉指令:

hdfs haadmin -transitionToStandby --forcemanual nn2
hdfs haadmin -transitionToActive --forcemanual nn1      

②高可用hadoop core-site.xml配置的這一塊

解決啟動hbase出現ERROR: Can‘t get master address from ZooKeeper; znode data == null

和hbase-site.xml不符合,因為當時我是在高可用配置前已經配置好hbase了,後期沒有去改,是以得改過來

解決啟動hbase出現ERROR: Can‘t get master address from ZooKeeper; znode data == null

修改之後:

解決啟動hbase出現ERROR: Can‘t get master address from ZooKeeper; znode data == null

再把hadoop 叢集的配置檔案 core-site.xml 和 hdfs-site.xml 這兩個配置檔案複制到hbase的conf目錄下

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