1、异常：“java.io.IOException: Got error, status message , ack with firstBadLink as 192.168.1.10:50010”
[root@node01 servers]# ./hadoop-2.7.5/bin/hdfs dfs -put test.txt /input
20/08/10 22:28:42 INFO hdfs.DFSClient: Exception in createBlockOutputStream
java.io.IOException: Got error, status message , ack with firstBadLink as 192.168.1.9:50010
at org.apache.hadoop.hdfs.protocol.datatransfer.DataTransferProtoUtil.checkBlockOpStatus(DataTransferProtoUtil.java:140)
at org.apache.hadoop.hdfs.DFSOutputStream
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DataStreamer.createBlockOutputStream(DFSOutputStream.java:1482) at org.apache.hadoop.hdfs.DFSOutputStream
DataStreamer.createBlockOutputStream(DFSOutputStream.java:1482)atorg.apache.hadoop.hdfs.DFSOutputStreamDataStreamer.nextBlockOutputStream(DFSOutputStream.java:1385)
at org.apache.hadoop.hdfs.DFSOutputStream
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DataStreamer.run(DFSOutputStream.java:554) 20/08/10 22:28:42 INFO hdfs.DFSClient: Abandoning BP-180482463-192.168.1.8-1588893747062:blk_1073741831_1007 20/08/10 22:28:42 INFO hdfs.DFSClient: Excluding datanode DatanodeInfoWithStorage[192.168.1.9:50010,DS-b84ef1dc-6eac-49b0-bbc7-822e5809f69a,DISK] 20/08/10 22:28:42 INFO hdfs.DFSClient: Exception in createBlockOutputStream java.io.IOException: Got error, status message , ack with firstBadLink as 192.168.1.10:50010 at org.apache.hadoop.hdfs.protocol.datatransfer.DataTransferProtoUtil.checkBlockOpStatus(DataTransferProtoUtil.java:140) at org.apache.hadoop.hdfs.DFSOutputStream
DataStreamer.run(DFSOutputStream.java:554)20/08/1022:28:42INFOhdfs.DFSClient:AbandoningBP−180482463−192.168.1.8−1588893747062:blk1073741831100720/08/1022:28:42INFOhdfs.DFSClient:ExcludingdatanodeDatanodeInfoWithStorage[192.168.1.9:50010,DS−b84ef1dc−6eac−49b0−bbc7−822e5809f69a,DISK]20/08/1022:28:42INFOhdfs.DFSClient:ExceptionincreateBlockOutputStreamjava.io.IOException:Goterror,statusmessage,ackwithfirstBadLinkas192.168.1.10:50010atorg.apache.hadoop.hdfs.protocol.datatransfer.DataTransferProtoUtil.checkBlockOpStatus(DataTransferProtoUtil.java:140)atorg.apache.hadoop.hdfs.DFSOutputStreamDataStreamer.createBlockOutputStream(DFSOutputStream.java:1482)
at org.apache.hadoop.hdfs.DFSOutputStream
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DataStreamer.nextBlockOutputStream(DFSOutputStream.java:1385) at org.apache.hadoop.hdfs.DFSOutputStream
DataStreamer.nextBlockOutputStream(DFSOutputStream.java:1385)atorg.apache.hadoop.hdfs.DFSOutputStreamDataStreamer.run(DFSOutputStream.java:554)
20/08/10 22:28:42 INFO hdfs.DFSClient: Abandoning BP-180482463-192.168.1.8-1588893747062:blk_1073741832_1008
20/08/10 22:28:42 INFO hdfs.DFSClient: Excluding datanode DatanodeInfoWithStorage[192.168.1.10:50010,DS-8bfe69be-dc25-4a35-b2bf-c435847af4ba,DISK]
出现上述情况，一般都是没有关闭防火墙或者没有开通对应端口造成的。
#查看防火墙状态
systemctl status firewalld.service
#关闭防火墙
systemctl stop firewalld.service
#禁止开机启动
systemctl disable firewalld.service
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