start-hbse.sh后regionserver没有启动

查看regionserver节点的log:

018-11-03 09:54:18,787 ERROR [regionserver/dn1/192.168.0.45:16020] regionserver.HRegionServer: Failed init
java.lang.IllegalArgumentException: java.net.UnknownHostException: cluster1
        at org.apache.hadoop.security.SecurityUtil.buildTokenService(SecurityUtil.java:378)
        at org.apache.hadoop.hdfs.NameNodeProxies.createNonHAProxy(NameNodeProxies.java:320)
        at org.apache.hadoop.hdfs.NameNodeProxies.createProxy(NameNodeProxies.java:176)
        at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:678)
        at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:619)
        at org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:149)
        at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2669)
        at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:94)
        at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2703)
        at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2685)
        at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:373)
        at org.apache.hadoop.fs.Path.getFileSystem(Path.java:295)
        at org.apache.hadoop.hbase.util.FSUtils.getRootDir(FSUtils.java:1037)
        at org.apache.hadoop.hbase.util.FSUtils.isValidWALRootDir(FSUtils.java:1080)
        at org.apache.hadoop.hbase.util.FSUtils.getWALRootDir(FSUtils.java:1062)
        at org.apache.hadoop.hbase.regionserver.HRegionServer.initializeFileSystem(HRegionServer.java:660)
        at org.apache.hadoop.hbase.regionserver.HRegionServer.handleReportForDutyResponse(HRegionServer.java:1437)
        at org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:974)
        at java.lang.Thread.run(Thread.java:748)
Caused by: java.net.UnknownHostException: cluster1
        ... 19 more

注意到是由于hdfs的路径引起的。虽然我在配置集群的时候取名叫做cluster1了，但是Hbase还是无法找到。

解决方案：

修改hbase-site中：
<property>
    <name>hbase.rootdir</name>
    <value>hdfs://cluster1/hbase</value>
<property>
为：
<property>
    <name>hbase.rootdir</name>
    <value>hdfs://nna:9000/hbase</value>
<property>