常常被一些用户问到,说“为什么我的mapreduce作业总是运行到某个阶段就报出如下错误,然后失败呢?以前同一个作业没出现过的呀?” 10/01/10 12:48:01 INFO mapred.JobClient: Task Id : attempt_201001061331_0002_m_000027_0, Status : FAILED java.lang.OutOfMemoryError: Java heap space at org.apache.hadoop.mapre…
格式化namenode时报错警告:WARN common.Util: Path /data/dfs/name should be specified as a URI in configuration 一.问题分析 在执行hadoop namenode格式化命令:bin/hadoop namenode -format时出现警告: WARN common.Util: Path /data/dfs/name should be specified as a URI in configuration…
今天用eclipse连接Hadoop集群的时候突然给我报了这样一个错误:Error:Call From xxx/xxx.xxx.xxx.xxx to hostname1:9000 failed on connection exception:java.net.ConnectException:Connection refused:no further information;...如下图所示: 通过查看配置信息得到错误原因如下:hdfs-site.xml中配置的DFS Master的端口号和ec…
问题 上传文件到Hadoop异常,报错信息如下: org.apache.hadoop.ipc.RemoteException(java.io.IOException): File /home/input/qn_log.txt._COPYING_ could only be replicated to 0 nodes instead of minReplication (=1). There are 0 datanode(s) running and no node(s) are excluded…
安装时报错:Failed to execute goal org.apache.maven.plugins:maven-antrun-plugin:1.7:run (site) on project hadoop-hdfs: An Ant BuildException has occured: input file /usr/local/hadoop-2.6.0-stable/hadoop-2.6.0-src/hadoop-hdfs-project/hadoop-hdfs/target/find…