Details
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Bug
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Status: Resolved
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Major
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Resolution: Invalid
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2.2.4
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None
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None
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OS: Ubuntu 16.04.6
JDK:1.8
Hadoop:3.1.3 or 3.2.1
Zookeeper:3.6.0
HBase:2.2.4Hostname IP Components cluster-hadoop-01 172.18.20.3 NameNode、DataNode、ZooKeeper、HMaster、RegionServer cluster-hadoop-02 172.18.20.4 NameNode、`DataNode、Zookeeper、HMaster-Backup、RegionServer cluster-hadoop-03 172.18.20.5 DataNode、ZooKeeper、RegionServer hbase-site.xml:
<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?><configuration>
<property>
<name>hbase.rootdir</name>
<value>hdfs://hdfscluster/hbase</value>
</property>
<property>
<name>hbase.cluster.distributed</name>
<value>true</value>
</property><property>
<name>hbase.zookeeper.property.clientPort</name>
<value>2181</value>
</property>
<property>
<name>hbase.zookeeper.quorum</name>
<value>cluster-hadoop-01,cluster-hadoop-02,cluster-hadoop-03</value>
</property>
<property>
<name>hbase.zookeeper.property.dataDir</name>
<value>/data/zookeeper/data</value>
</property>
</configuration>hdfs-site.xml:
......
<property>
<name>dfs.nameservices</name>
<value>hdfscluster</value>
</property>
.......OS: Ubuntu 16.04.6 JDK:1.8 Hadoop:3.1.3 or 3.2.1 Zookeeper:3.6.0 HBase:2.2.4 Hostname IP Components cluster-hadoop-01 172.18.20.3 NameNode、DataNode、ZooKeeper、HMaster、RegionServer cluster-hadoop-02 172.18.20.4 NameNode、`DataNode、Zookeeper、HMaster-Backup、RegionServer cluster-hadoop-03 172.18.20.5 DataNode、ZooKeeper、RegionServer hbase-site.xml: <?xml version="1.0"?> <?xml-stylesheet type="text/xsl" href="configuration.xsl"?> <configuration> <property> <name>hbase.rootdir</name> <value>hdfs://hdfscluster/hbase</value> </property> <property> <name>hbase.cluster.distributed</name> <value>true</value> </property> <property> <name>hbase.zookeeper.property.clientPort</name> <value>2181</value> </property> <property> <name>hbase.zookeeper.quorum</name> <value>cluster-hadoop-01,cluster-hadoop-02,cluster-hadoop-03</value> </property> <property> <name>hbase.zookeeper.property.dataDir</name> <value>/data/zookeeper/data</value> </property> </configuration> hdfs-site.xml: ...... <property> <name>dfs.nameservices</name> <value>hdfscluster</value> </property> .......
Description
Problem: HMasters fail to start.
Solution: Check for this error in the HMaster log:
2020-05-01 19:30:13,125 ERROR [main] regionserver.HRegionServer: Failed construction RegionServer
java.lang.IllegalArgumentException: java.net.UnknownHostException: hdfscluster
Hadoop's hdfs-site.xml and core-site.xml files are in your hbase/conf directory