Hadoop使用过程中常见的错误

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$DataStreamer.createBlockOutputStream(DFSOutputStream.java:1482)atorg.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.nextBlockOutputStream(DFSOutputStream.java:1385)
at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.run(DFSOutputStream.java:554)20/08/1022:28:42INFOhdfs.DFSClient:AbandoningBP-180482463-192.168.1.8-1588893747062:bl{k}_{1}073741831_{1}00720/08/1022:28:42INFOhdfs.DFSClient:ExcludingdatanodeDatanodeInfoWithStorage[192.168.1.9:50010,DS-b84ef1dc-6eac-49b0-bbc7-822e5809f69a,DISK]20/08/1022:28:42INFOhdfs.DFSClient:ExceptionincreateBlockOutputStreamjava.io.IOException:Goterror,statusmessage,ackwithfirstBadLinkas192.168.1.10:50010atorg.apache.hadoop.hdfs.protocol.datatransfer.DataTransferProtoUtil.checkBlockOpStatus(DataTransferProtoUtil.java:140)atorg.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.createBlockOutputStream(DFSOutputStream.java:1482)
at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.nextBlockOutputStream(DFSOutputStream.java:1385)atorg.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.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