RECEIVED SIGNAL 15

本文分析了Hadoop集群中NameNode收到SIGTERM信号导致的问题,初步判断为文件数据块原因造成DataNode失联。通过手动执行hadoop dfsadmin -refreshNodes命令解决了问题,总结发现balancer停止运行引发的连锁反应。

DFSRouter: RECEIVED SIGNAL 15: SIGTERM

ERROR org.apache.hadoop.hdfs.server.namenode.NameNode: RECEIVED SIGNAL 15: SIGTERM

二、分析

1、signal 15含意是使用不带参数的kill命令时终止进程,初步判断,由于文件数据块的原因造成datanode失联,手动执行如下命令

hadoop dfsadmin -refreshNodes

三、解决方法

手动执行hadoop dfsadmin -refreshNodes

问题总结:balancer停了一段时间了,以前balancer的 pid现在是router里的一个线程,所以stop balancer的时候,router退出了。

[root@hadoop1 ~]# cat /opt/hadoop-3.3.6/logs/hadoop-root-namenode-hadoop1.log | grep -i error 2025-02-28 20:49:36,042 ERROR org.apache.hadoop.hdfs.server.namenode.NameNode: Failed to start namenode. 2025-05-14 20:17:04,457 ERROR org.apache.hadoop.hdfs.server.namenode.NameNode: RECEIVED SIGNAL 15: SIGTERM 2025-05-14 20:18:26,628 ERROR org.apache.hadoop.hdfs.server.namenode.NameNode: Failed to start namenode. 2025-05-14 20:25:01,595 ERROR org.apache.hadoop.hdfs.server.namenode.NameNode: RECEIVED SIGNAL 15: SIGTERM 2025-05-14 20:38:58,322 ERROR org.apache.hadoop.hdfs.server.namenode.NameNode: RECEIVED SIGNAL 15: SIGTERM 2025-05-14 21:36:02,750 ERROR org.apache.hadoop.hdfs.server.namenode.NameNode: RECEIVED SIGNAL 15: SIGTERM 2025-05-14 21:59:42,702 ERROR org.apache.hadoop.hdfs.server.namenode.NameNode: RECEIVED SIGNAL 15: SIGTERM 2025-05-15 01:14:54,478 ERROR org.apache.hadoop.hdfs.server.namenode.NameNode: RECEIVED SIGNAL 15: SIGTERM 2025-05-15 11:42:26,109 ERROR org.apache.hadoop.hdfs.server.namenode.NameNode: RECEIVED SIGNAL 15: SIGTERM 2025-05-15 12:31:43,981 ERROR org.apache.hadoop.hdfs.server.namenode.NameNode: RECEIVED SIGNAL 15: SIGTERM 2025-05-15 12:31:43,984 ERROR org.apache.hadoop.hdfs.server.namenode.NameNode: RECEIVED SIGNAL 1: SIGHUP 2025-05-15 12:55:01,995 ERROR org.apache.hadoop.hdfs.server.namenode.NameNode: RECEIVED SIGNAL 15: SIGTERM 2025-05-15 12:55:02,007 ERROR org.apache.hadoop.hdfs.server.namenode.NameNode: RECEIVED SIGNAL 1: SIGHUP 2025-05-15 20:27:46,837 ERROR org.apache.hadoop.hdfs.server.namenode.NameNode: RECEIVED SIGNAL 15: SIGTERM 2025-05-15 20:39:27,784 ERROR org.apache.hadoop.hdfs.server.namenode.NameNode: Failed to start namenode. 2025-05-15 20:40:36,546 ERROR org.apache.hadoop.hdfs.server.namenode.NameNode: Failed to start namenode. 2025-05-15 20:43:22,190 ERROR org.apache.hadoop.hdfs.server.namenode.NameNode: Failed to start namenode. 2025-05-15 20:48:03,623 ERROR org.apache.hadoop.hdfs.server.namenode.NameNode: Failed to start namenode. [root@hadoop1 ~]#
最新发布
05-16
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