Hadoop错误集锦，

和通数据库htsjk.Com2020-02-05 21:52 来源:未知阅读:16766 评论 221 热度2

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Hadoop错误集锦，

1. Bad connect ack with firstBadLink

15/04/30 16:46:04 INFO hdfs.DFSClient: Exception in createBlockOutputStream
java.io.IOException: Bad connect ack with firstBadLink as 172.28.217.76:50010
        at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.createBlockOutputStream(DFSOutputStream.java:1460)
        at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.nextBlockOutputStream(DFSOutputStream.java:1361)
        at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.run(DFSOutputStream.java:588)
15/04/30 16:46:04 INFO hdfs.DFSClient: Abandoning BP-1113147092-172.28.217.55-1430362376760:blk_1073742920_2096
15/04/30 16:46:04 INFO hdfs.DFSClient: Excluding datanode 172.28.217.76:50010

错误原因：防火墙

1) '/etc/init.d/iptables stop' -->stopped firewall 
2) SELINUX=disabled in '/etc/selinux/config' file.-->disabled selinux

2.No route to host

15/04/30 16:44:50 INFO hdfs.DFSClient: Exception in createBlockOutputStream
java.net.NoRouteToHostException: No route to host
        at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
        at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:739)
        at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)
        at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:530)
        at org.apache.hadoop.hdfs.DFSOutputStream.createSocketForPipeline(DFSOutputStream.java:1610)
        at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.createBlockOutputStream(DFSOutputStream.java:1408)
        at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.nextBlockOutputStream(DFSOutputStream.java:1361)
        at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.run(DFSOutputStream.java:588)
15/04/30 16:44:50 INFO hdfs.DFSClient: Abandoning BP-1113147092-172.28.217.55-1430362376760:blk_1073742916_2092
15/04/30 16:44:50 INFO hdfs.DFSClient: Excluding datanode 172.28.217.76:50010

错误原因：请检查网络是否通，及防火墙