Hbase Master 和 Region 服务器无法启动

Question

Hadoop 在分布式模式下成功运行。

在分布式模式下启动 HBase 时出现以下错误。

尝试了 hbase-site.xml 配置中的所有内容。不知道如何处理该问题？

014-03-10 13:55:42,493 INFO org.apache.zookeeper.ClientCnxn: Opening socket connection to server ip-112-11-1-111.ec2.internal/112.11.1.111:2181. 
Will not attempt to authenticate using SASL (Unable to locate a login configuration)

2014-03-10 13:55:42,494 WARN org.apache.zookeeper.ClientCnxn: Session 0x0 for server null, unexpected error, closing socket connection and attempting reconnect

java.net.ConnectException: Connection refused
        at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
        at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:599)
        at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:350)
        at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1068)
2014-03-10 13:55:42,594 WARN org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: Possibly transient ZooKeeper exception: org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /hbase
2014-03-10 13:55:42,594 ERROR org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: ZooKeeper exists failed after 3 retries
2014-03-10 13:55:42,595 ERROR org.apache.hadoop.hbase.master.HMasterCommandLine: Failed to start master
java.lang.RuntimeException: Failed construction of Master: class org.apache.hadoop.hbase.master.HMaster
        at org.apache.hadoop.hbase.master.HMaster.constructMaster(HMaster.java:2104)
        at org.apache.hadoop.hbase.master.HMasterCommandLine.startMaster(HMasterCommandLine.java:152)
        at org.apache.hadoop.hbase.master.HMasterCommandLine.run(HMasterCommandLine.java:104)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
        at org.apache.hadoop.hbase.util.ServerCommandLine.doMain(ServerCommandLine.java:76)
        at org.apache.hadoop.hbase.master.HMaster.main(HMaster.java:2118)
Caused by: org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /hbase
        at org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
        at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
        at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1041)
        at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1069)
        at org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.exists(RecoverableZooKeeper.java:199)
        at org.apache.hadoop.hbase.zookeeper.ZKUtil.createAndFailSilent(ZKUtil.java:1109)
        at org.apache.hadoop.hbase.zookeeper.ZKUtil.createAndFailSilent(ZKUtil.java:1099)
        at org.apache.hadoop.hbase.zookeeper.ZKUtil.createAndFailSilent(ZKUtil.java:1083)
        at org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.createBaseZNodes(ZooKeeperWatcher.java:162)
        at org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.<init>(ZooKeeperWatcher.java:155)
        at org.apache.hadoop.hbase.master.HMaster.<init>(HMaster.java:345)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
        at org.apache.hadoop.hbase.master.HMaster.constructMaster(HMaster.java:2099)

Answer 1

1. 确保 ZooKeeper 已配置并按预期运行。
2. 检查 zoo.cfg 和 /etc/hosts 以确保 HBase 主服务器可以访问所有 Zookeeper 服务器。