database - HBase 错误 - 分配 -ROOT- 失败

Question

我刚刚从 cloudera (3) 安装了 hadoop 和 hbase，但是当我尝试转到 http://localhost:60010 时它只是坐在那里不断加载。

我可以正常访问区域服务器 - http://localhost:60030 ... 查看主 hbase 服务器日志，我可以看到以下内容。

看起来像是根区域的问题。

所有这些都安装在运行 Ubuntu (Natty) 11 的 ext4 1TB 分区上。没有集群/其他盒子。

任何帮助都会很棒!

11/05/15 19:58:27 WARN master.AssignmentManager: Failed assignment of -ROOT-,,0.70236052 to serverName=localhost,60020,1305452402149, load=(requests=0, regions=0, usedHeap=24, maxHeap=995), trying to assign elsewhere instead; retry=0
org.apache.hadoop.hbase.client.RetriesExhaustedException: Failed setting up proxy interface org.apache.hadoop.hbase.ipc.HRegionInterface to /127.0.0.1:60020 after attempts=1
    at org.apache.hadoop.hbase.ipc.HBaseRPC.waitForProxy(HBaseRPC.java:355)
    at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getHRegionConnection(HConnectionManager.java:957)
    at org.apache.hadoop.hbase.master.ServerManager.getServerConnection(ServerManager.java:606)
    at org.apache.hadoop.hbase.master.ServerManager.sendRegionOpen(ServerManager.java:541)
    at org.apache.hadoop.hbase.master.AssignmentManager.assign(AssignmentManager.java:901)
    at org.apache.hadoop.hbase.master.AssignmentManager.assign(AssignmentManager.java:730)
    at org.apache.hadoop.hbase.master.AssignmentManager.assign(AssignmentManager.java:710)
    at org.apache.hadoop.hbase.master.AssignmentManager$TimeoutMonitor.chore(AssignmentManager.java:1605)
    at org.apache.hadoop.hbase.Chore.run(Chore.java:66)
Caused by: java.net.ConnectException: Connection refused
    at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
    at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567)
    at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)
    at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:408)
    at org.apache.hadoop.hbase.ipc.HBaseClient$Connection.setupIOstreams(HBaseClient.java:328)
    at org.apache.hadoop.hbase.ipc.HBaseClient.getConnection(HBaseClient.java:883)
    at org.apache.hadoop.hbase.ipc.HBaseClient.call(HBaseClient.java:750)
    at org.apache.hadoop.hbase.ipc.HBaseRPC$Invoker.invoke(HBaseRPC.java:257)
    at $Proxy6.getProtocolVersion(Unknown Source)
    at org.apache.hadoop.hbase.ipc.HBaseRPC.getProxy(HBaseRPC.java:419)
    at org.apache.hadoop.hbase.ipc.HBaseRPC.getProxy(HBaseRPC.java:393)
    at org.apache.hadoop.hbase.ipc.HBaseRPC.getProxy(HBaseRPC.java:444)
    at org.apache.hadoop.hbase.ipc.HBaseRPC.waitForProxy(HBaseRPC.java:349)
    ... 8 more
11/05/15 19:58:27 WARN master.AssignmentManager: Unable to find a viable location to assign region -ROOT-,,0.70236052

Answer 1

为发现此问题的其他人解决了此问题。主机文件 (/etc/hosts) 有问题。需要删除与 127.0.1.1 COMPNAME 相关的条目 - 只需在此行前面放置一个井号 (#)，然后重新启动所有 hadoop 和 hbase 服务。

更多关于解决方案的信息:http://blog.nemccarthy.me/?p=110