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分享HBase 启动异常
本人是HBase新手，还望高手不吝解答，提前谢过
1，从hbase官网下载的hbase-0.94.19.tar
2，按照官网的quick start部署，只修改了hbase-env.sh中的JDK版本和hbase-site.xml没做修改
3，/etc/hosts文件中内容如下：
4，启动Hbase，一开四Hmaster进程存在，很快进程消失，报错信息如下：
问题如下：
为什么Hbase总要去连接HDFS的默认端口8020，如果我启动Hadoop（HDFS使用默认8020端口），HBase运行正常，如果不起，Hbase就会报这个错误，官网的quick start没有说需要启动HDFS啊，难道是我哪里配错了么
1，从hbase官网下载的hbase-0.94.19.tar
2，按照官网的quick start部署，只修改了hbase-env.sh中的JDK版本和hbase-site.xml没做修改
3，/etc/hosts文件中内容如下：
127.0.0.1 localhost.localdomain localhost
192.168.211.129 fedora1 fedora1
::1 localhost6.localdomain6 localhost6
4，启动Hbase，一开四Hmaster进程存在，很快进程消失，报错信息如下：
2014-05-29 09:22:07,328 DEBUG org.apache.hadoop.hbase.master.HMaster: Started service threads
2014-05-29 09:22:07,328 INFO org.apache.hadoop.hbase.master.ServerManager: Waiting for region servers count to settle; currently checked in 0, slept for 0 ms, expecting minimum of 1, maximum of 2147483647, timeout of 4500 ms, interval of 1500 ms.
2014-05-29 09:22:08,128 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: fedora1/192.168.211.129:8020. Already tried 0 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
2014-05-29 09:22:08,845 INFO org.apache.hadoop.hbase.master.ServerManager: Waiting for region servers count to settle; currently checked in 0, slept for 1516 ms, expecting minimum of 1, maximum of 2147483647, timeout of 4500 ms, interval of 1500 ms.
2014-05-29 09:22:09,130 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: fedora1/192.168.211.129:8020. Already tried 1 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
2014-05-29 09:22:10,132 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: fedora1/192.168.211.129:8020. Already tried 2 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
2014-05-29 09:22:10,360 INFO org.apache.hadoop.hbase.master.ServerManager: Waiting for region servers count to settle; currently checked in 0, slept for 3032 ms, expecting minimum of 1, maximum of 2147483647, timeout of 4500 ms, interval of 1500 ms.
2014-05-29 09:22:11,134 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: fedora1/192.168.211.129:8020. Already tried 3 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
2014-05-29 09:22:11,877 INFO org.apache.hadoop.hbase.master.ServerManager: Waiting for region servers count to settle; currently checked in 0, slept for 4549 ms, expecting minimum of 1, maximum of 2147483647, timeout of 4500 ms, interval of 1500 ms.
2014-05-29 09:22:12,136 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: fedora1/192.168.211.129:8020. Already tried 4 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
2014-05-29 09:22:13,137 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: fedora1/192.168.211.129:8020. Already tried 5 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
2014-05-29 09:22:13,390 INFO org.apache.hadoop.hbase.master.ServerManager: Waiting for region servers count to settle; currently checked in 0, slept for 6062 ms, expecting minimum of 1, maximum of 2147483647, timeout of 4500 ms, interval of 1500 ms.
2014-05-29 09:22:14,139 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: fedora1/192.168.211.129:8020. Already tried 6 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
2014-05-29 09:22:14,908 INFO org.apache.hadoop.hbase.master.ServerManager: Waiting for region servers count to settle; currently checked in 0, slept for 7580 ms, expecting minimum of 1, maximum of 2147483647, timeout of 4500 ms, interval of 1500 ms.
2014-05-29 09:22:15,142 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: fedora1/192.168.211.129:8020. Already tried 7 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
2014-05-29 09:22:16,145 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: fedora1/192.168.211.129:8020. Already tried 8 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
2014-05-29 09:22:16,452 INFO org.apache.hadoop.hbase.master.ServerManager: Waiting for region servers count to settle; currently checked in 0, slept for 9124 ms, expecting minimum of 1, maximum of 2147483647, timeout of 4500 ms, interval of 1500 ms.
2014-05-29 09:22:17,147 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: fedora1/192.168.211.129:8020. Already tried 9 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
2014-05-29 09:22:17,152 ERROR org.apache.hadoop.hbase.master.HMasterCommandLine: Failed to start master
java.net.ConnectException: Call to fedora1/192.168.211.129:8020 failed on connection exception: java.net.ConnectException: Connection refused
at org.apache.hadoop.ipc.Client.wrapException(Client.java:1142)
at org.apache.hadoop.ipc.Client.call(Client.java:1118)
at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:229)
at com.sun.proxy.$Proxy11.getProtocolVersion(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:85)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:62)
at com.sun.proxy.$Proxy11.getProtocolVersion(Unknown Source)
at org.apache.hadoop.ipc.RPC.checkVersion(RPC.java:422)
at org.apache.hadoop.hdfs.DFSClient.createNamenode(DFSClient.java:183)
at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:281)
at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:245)
at org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:100)
at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:1446)
at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:67)
at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:1464)
at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:263)
at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:124)
at org.apache.hadoop.hbase.util.JVMClusterUtil.startup(JVMClusterUtil.java:191)
at org.apache.hadoop.hbase.LocalHBaseCluster.startup(LocalHBaseCluster.java:422)
at org.apache.hadoop.hbase.master.HMasterCommandLine.startMaster(HMasterCommandLine.java:149)
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:2129)
Caused by: 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.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)
at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:511)
at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:481)
at org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:457)
at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:583)
at org.apache.hadoop.ipc.Client$Connection.access$2200(Client.java:205)
at org.apache.hadoop.ipc.Client.getConnection(Client.java:1249)
at org.apache.hadoop.ipc.Client.call(Client.java:1093)
... 26 more
问题如下：
为什么Hbase总要去连接HDFS的默认端口8020，如果我启动Hadoop（HDFS使用默认8020端口），HBase运行正常，如果不起，Hbase就会报这个错误，官网的quick start没有说需要启动HDFS啊，难道是我哪里配错了么
...全文
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vah101 2014-05-29
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hbase-site.xml里面hbase.rootdir这一项是咋配的？
sean-zou 2014-05-29
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修改配置后还是有问题，我看hbase权威指南上说如果不配置hbase.rootdir，默认使用的位置是/tmp/hbase-${usr.name}，奇怪的是如果不配置hbase.rootdir启动，在/tmp下没看到任何相关文件
sean-zou 2014-05-29
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修改了一下hbase-site.xml
<configuration>
<property>
<name>hbase.rootdir</name>
<value>file:///home/hadoop/tmp</value>
</property>
</configuration>
我看到日志中有这么一个问题
2014-05-29 17:42:05,670 INFO org.apache.hadoop.hbase.master.ServerManager: Waiting for region servers count to settle; currently checked in 0, slept for 0 ms, expecting minimum of 1, maximum of 2147483647, timeout of 4500 ms, interval of 1500 ms.
之后不断尝试连接，超时后会报连接异常
java.net.ConnectException: Call to fedora1/192.168.211.129:8020 failed on connection exception: java.net.ConnectException: Connection refused
最少需要一个region是怎么回事，我是新手，不太懂这块，而且quick start和网上很多地方也没有提这点
其实开了hadoop后hbase也是能用的，就是这块的报错不知道怎么回事
非常感谢你回答我的问题
vah101 2014-05-29
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调用栈上有：
at org.apache.hadoop.hdfs.DFSClient.createNamenode(DFSClient.java:183)
at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:281)
at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:245)
at org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:100)
at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:1446)
at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:67)
at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:1464)
at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:263)
at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:124)
at org.apache.hadoop.hbase.util.JVMClusterUtil.startup(JVMClusterUtil.java:191)
说明hbase启动的时候访问了hdfs，你把hbase.rootdir改回file:///home/hadoop/hbasetmp再重启试试
sean-zou 2014-05-29
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一开始配置的是file:///home/hadoop/hbasetmp，后来我把这个配置去掉了，就是用默认地址，都会报上面那个错误
sean-zou 2014-05-29
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一开始配置的是file:///home/hadoop/hbasetmp，后来我把这个配置去掉了，就是用默认地址，都会报上面那个错误
