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hbase错误两点总结

一、hbase的HRegionServer节点启动失败

2015-10-23 17:24:33,147 WARN  [regionserver60020] zookeeper.RecoverableZooKeeper: Node /hbase/rs/SlaveServer,60020,1413095376898 already deleted, retry=false
 2015-10-23 17:24:33,147 WARN  [regionserver60020] regionserver.HRegionServer: Failed deleting my ephemeral node
 org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode = NoNode for /hbase/rs/SlaveServer,60020,1413095376898
  at org.apache.zookeeper.KeeperException.create(KeeperException.java:111)
  at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
  at org.apache.zookeeper.ZooKeeper.delete(ZooKeeper.java:873)
  at org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.delete(RecoverableZooKeeper.java:156)
  at org.apache.hadoop.hbase.zookeeper.ZKUtil.deleteNode(ZKUtil.java:1273)
  at org.apache.hadoop.hbase.zookeeper.ZKUtil.deleteNode(ZKUtil.java:1262)
  at org.apache.hadoop.hbase.regionserver.HRegionServer.deleteMyEphemeralNode(HRegionServer.java:1298)
  at org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:1012)
  at java.lang.Thread.run(Thread.java:662)
 2015-10-23 17:24:33,158 INFO  [regionserver60020] zookeeper.ZooKeeper: Session: 0x249020a2cfd0014 closed
 2015-10-23 17:24:33,158 INFO  [regionserver60020-EventThread] zookeeper.ClientCnxn: EventThread shut down
 2015-10-23 17:24:33,158 INFO  [regionserver60020] regionserver.HRegionServer: stopping server null; zookeeper connection closed.
 2015-10-23 17:24:33,158 INFO  [regionserver60020] regionserver.HRegionServer: regionserver60020 exiting
 2015-10-23 17:24:33,158 ERROR [main] regionserver.HRegionServerCommandLine: Region server exiting
 java.lang.RuntimeException: HRegionServer Aborted
  at org.apache.hadoop.hbase.regionserver.HRegionServerCommandLine.start(HRegionServerCommandLine.java:66)
  at org.apache.hadoop.hbase.regionserver.HRegionServerCommandLine.run(HRegionServerCommandLine.java:85)
  at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
  at org.apache.hadoop.hbase.util.ServerCommandLine.doMain(ServerCommandLine.java:126)
  at org.apache.hadoop.hbase.regionserver.HRegionServer.main(HRegionServer.java:2422)
 2015-10-23 17:24:33,160 INFO  [Thread-9] regionserver.ShutdownHook: Shutdown hook starting; hbase.shutdown.hook=true; fsShutdownHook=org.apache.hadoop.fs.FileSystem$Cache$ClientFinalizer@8d5aad
 2015-10-23 17:24:33,160 INFO  [Thread-9] regionserver.ShutdownHook: Starting fs shutdown hook thread.
 2015-10-23 17:24:33,160 INFO  [Thread-9] regionserver.ShutdownHook: Shutdown hook finished.

一般这种情况，是因为集群中节点时间相差太多，时间没有同步导致的，解决方案：

# yum -y install ntpdate  && chkconfig ntpdate off
 # crontab -e     #add sync time cron scripts
 */2 * * * * ntpdate asia.pool.ntp.org

如果遇到是其他原因的同学，下面回答分享一下！

二、主机名配置问题

failed on connection exception: java.net.ConnectException: Connection refused; For more details see:  http://wiki.apache.org/hadoop/ConnectionRefused

根据查看提示链接http://wiki.apache.org/hadoop/ConnectionRefused排查错误，将/etc/hosts中的127.0.0.1 hbase1删除（从节点对应也删除）后程序运行正常。接着尝试运行HBase，没有出现问题！创建表也正常了！

一开始知道得删除hosts文件中127.0.1.1，但是没想到127.0.0.1 主机名也得删除。

还有一种情况也会导致集群启动问题，那就是主机名不规范，作为hadoop集群中的主机名，是不支持_和-的，比如hbase_host1这是不支持的！

正文到此结束

所属分类：编程技术

本文标签： ssh 集群 DOM java tar 时间删除 Region http ip 配置主机 node HRegionServer client tab zookeeper Connection Hadoop HBase 同步 apache Slaves final
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