1 概述  解决hadoop启动hdfs时,datanode无法启动的问题.错误为: java.io.IOException: Incompatible clusterIDs in /home/lxh/hadoop/hdfs/data: namenode clusterID = CID-a3938a0b-57b5-458d-841c-d096e2b7a71c; datanode clusterID = CID-200e6206-98b5-44b2-9e48-262871884eeb 2 问题描述…

(注意: 本人用的版本为hadoop2.2.0, 旧的版本和此版本的解决方法不同) 异常为: 9 (storage id DS-2102177634-172.16.102.203-50010-1384415799536) service to cluster1/172.16.102.201:9000 java.io.IOException: Incompatible clusterIDs in /home/grid/hadoop-2.2.0-src/hadoop-dist/target/hado…

java.io.IOException: Incompatible clusterIDs in /export/hadoop-2.7.5/hadoopDatas/datanodeDatas2: namenode clusterID = CID-b3356ee2-aaae-4b89-86e2-e6eec8fe6e00; datanode clusterID = CID-c648893d-0a5b-4dc3-ae95-e962e62e0c6c at org.apache.hadoop.hdfs.se…

错误: java.io.IOException: Incompatible clusterIDs in /data/dfs/data: namenode clusterID = CID-d1448b9e-da0f-499e-b1d4-78cb18ecdebb; datanode clusterID = CID-ff0faa40-2940-4838-b321-98272eb0dee3 原因: 每次namenode format会重新创建一个namenodeId,而data目录包含了上次format…

问题: 配置Hadoop集群时,一个节点的DataNode无法启动 排查: 查看hadoop-root-datanode-bigdata114.log文件,错误信息如下: java.io.IOException: Incompatible clusterIDs in /root/training/hadoop-2.7.3/tmp/dfs/data: namenode clusterID = CID-947a48a2-56aa-4566-85d6-b5987d0bfeca; datanode cl…

…

问题描述:   在实验的时候,需要往以前的集群中添加一台datanode,在添加之前,由于在调式namenode的时候,格式化了dfs,这就导致了namenode上的namespaceID和以前集群上datanode的namespaceID不一致,结果就会导致在启动hadoop集群的时候,旧的的datanode就没有办法启动hdfs服务,但是旧的dadanode可以启动tasktracker. 2015-01-28 11:01:27,561 ERROR org.apache.hadoop.hdf…

错误: java.io.IOException: Failed to replace a bad datanode on the existing pipeline due to no more good datanodes being available to try 原因: 无法写入:我的环境中有3个datanode,备份数量设置的是3.在写操作时,它会在pipeline中写3个机器.默认replace-datanode-on-failure.policy是DEFAULT,如果系统中的dat…

昨晚突然之间mr跑步起来了 jps查看 进程都在的,但是在reduce任务跑了85%的时候会抛异常 异常情况如下: 2016-09-21 21:32:28,538 INFO [org.apache.hadoop.mapreduce.Job] - map 100% reduce 84% 2016-09-21 21:32:30,623 INFO [org.apache.hadoop.mapred.LocalJobRunner] - reduce > reduce 2016-09-21 21:32:3…

在master(即:host2)中执行 hadoop jar hadoop-test-1.1.2.jar DFSCIOTest -write -nrFiles 12 -fileSize 10240 -resFile test 最后fail,为啥,看了一下日志 org.apache.hadoop.ipc.RemoteException: java.io.IOException: File /benchmarks/TestDFSIO/io_data/test_io_0 could only be r…