區域服務器死機的原因

Question

我有一個3節點hbase集羣在亞馬遜Ec2上運行。這工作得很好。現在，我嘗試使用兩個單獨的插入查詢將數據從EMR插入到EC2。因此，第一次插入查詢完美無缺，並插入數據，之後，我的所有區域服務器都變得死亡。那麼，你能否建議我調試這個問題的一般指導方針，以及爲什麼一般地區服務器會死亡？ 此外，即使我明確地啓動區域服務器後，他們再次成爲死亡。

更新問題：

前，我想這可能是一個問題，由於HBASE_HEAPSIZE這是默認設置爲1GB。但我也增加到5.5 Gb仍然區域服務器正在死亡。 下面是我在每個區域服務器上死後的日誌。

2013-10-07 18:16:27,949 WARN org.apache.zookeeper.ClientCnxn: Session 0x141916dfbe50000 for server null, unexpected error, closing socket connection and attempting rec$ 
java.net.ConnectException: Connection refused 
     at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) 
     at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:597) 
     at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:286) 
     at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1035) 
2013-10-07 18:16:27,990 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: localhost/10.179.42.93:50020. Already tried 1 time(s). 
2013-10-07 18:16:28,049 INFO org.apache.zookeeper.ClientCnxn: Opening socket connection to server master/10.179.42.93:2181 
2013-10-07 18:16:28,049 INFO org.apache.zookeeper.client.ZooKeeperSaslClient: Client will not SASL-authenticate because the default JAAS configuration section 'Client'$ 
2013-10-07 18:16:28,049 WARN org.apache.zookeeper.ClientCnxn: Session 0x141916dfbe50001 for server null, unexpected error, closing socket connection and attempting rec$ 
java.net.ConnectException: Connection refused 
     at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) 
     at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:597) 
     at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:286) 
     at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1035) 
2013-10-07 18:16:28,177 INFO org.apache.zookeeper.ClientCnxn: Opening socket connection to server slave/10.178.5.52:2181 
2013-10-07 18:16:28,177 INFO org.apache.zookeeper.client.ZooKeeperSaslClient: Client will not SASL-authenticate because the default JAAS configuration section 'Client'$ 
2013-10-07 18:16:28,178 WARN org.apache.zookeeper.ClientCnxn: Session 0x141916dfbe50001 for server null, unexpected error, closing socket connection and attempting rec$ 
java.net.ConnectException: Connection refused 
     at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) 
     at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:597) 
     at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:286) 
     at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1035) 

Answer 1

您可以檢查RegionServer的日誌。以下是有關日誌位置的更多信息。

• http://hbase.apache.org/book/trouble.log.html

如果必須在域服務器上時發出明確轉向，那麼它的問題的情況。

最好的方法是用HBASE創建一個新的EMR實例。