Hbase Error "ERROR: KeeperErrorCode = NoNode for /hbase/master"
Solution 1
In my case I was receiving this "ERROR: KeeperErrorCode = NoNode for /hbase/master
" because HMaster process was not running.
Check with jps
command.
hdusr@hdp-master-1:$ jps
27504 Main
32755 DataNode
23316 HQuorumPeer
27957 Jps
646 SecondaryNameNode
27097 HMaster
23609 HRegionServer
1562 Master
1722 Worker
911 ResourceManager
32559 NameNode
1167 NodeManager
If you don't see HMaster process as in above list then that's the reason for ERROR: KeeperErrorCode = NoNode.
in hbase shell.
In $HBASE_HOME/logs
directory check for hbase-***-master.log
for specific error.
In my case there were 2 reasons ,
First :
WARN [main-SendThread(localhost:2181)] zookeeper.ClientCnxn: Session 0x0 for server null, unexpected error, closing socket connection and attempting reconnect
java.net.ConnectException: Connection timed out
Which I solved by replacing 'localhost' with 'my machine's hostname' in hbase-site.xml. from this answer
Second :
ERROR [master/spark-hdp-master-1:16000:becomeActiveMaster] master.HMaster: Failed to become active masterorg.apache.hadoop.ipc.RemoteException(org.apache.hadoop.security.AccessControlException): org.apache.hadoop.security.AccessControlException: SIMPLE authentication is not enabled. Available:[TOKEN]
This was because the hdfs port in hbase-site.xml was different than that in core-site.xml of hadoop.
Solution 2
replace or add these configuration to the hbase-site.xml file in the conf folder of hbase dir, and then rerun the "hbase shell" command and then "list" command to view the tables present.
<?xml version="1.0" encoding="utf-8" ?>
<!--Keeper Error fix-->
<configuration>
<property>
<name>hbase.rootdir</name>
<value>hdfs://localhost:8020/hbase</value>
</property>
<property>
<name>hbase.zookeeper.quorum</name>
<value>localhost</value>
</property>
<property>
<name>hbase.zookeeper.property.clientPort</name>
<value>2182</value>
</property>
<property>
<name>hbase.zookeeper.property.dataDir</name>
<value>/var/lib/hbase/zookeeper</value>
</property>
</configuration>
user7413163
Updated on December 22, 2021Comments
-
user7413163 over 2 years
While executing any command in hbase shell, I am receiving the following error "ERROR: KeeperErrorCode = NoNode for /hbase/master" in hbase shell.
Started HBASE :
HOSTCHND:hbase-2.0.0 gvm$ ./bin/start-hbase.sh localhost: running zookeeper, logging to /usr/local/Cellar/hbase-2.0.0/bin/../logs/hbase-gvm-zookeeper-HOSTCHND.local.out running master, logging to /usr/local/Cellar/hbase-2.0.0/logs/hbase-gvm-master-HOSTCHND.local.out : running regionserver, logging to /usr/local/Cellar/hbase-2.0.0/logs/hbase-gvm-regionserver-HOSTCHND.local.out
While Checking status in HBASE SHELL :
hbase(main):001:0> status ERROR: KeeperErrorCode = NoNode for /hbase/master 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' Took 9.4096 seconds hbase(main):002:0>
hbase-site.xml
<configuration> <property> <name>hbase.rootdir</name> <value>hdfs://localhost:9000/hbase</value> </property> <property> <name>hbase.zookeeper.property.clientPort</name> <value>2181</value> </property> <property> <name>hbase.zookeeper.property.dataDir</name> <value>/usr/local/Cellar/hbase-2.0.0/hbasestorage/zookeeper</value> </property> <property> <name>hbase.cluster.distributed</name> <value>true</value> </property> <property> <name>hbase.zookeeper.quorum</name> <value>localhost</value> </property> </configuration>
Please let me know why this error happens while executing hbase commands?