11.28

hadoop启动hdfs时namenode消失

 

解决HDFS无法启动namenode，报错Premature EOF from inputStream；Failed to load FSImage file, see error(s) above for more info

 

一.情况描述

启动hadoop后发现无法打开hdfs web界面，50070打不开，于是jps发现少了一个namenode：

 查看日志信息，发现如下报错：

2022-01-03 23:54:10,993 INFO org.apache.hadoop.hdfs.server.namenode.FSImage: Planning to load image: FSImageFile(file=/export/servers/hadoop-3.1.4/hadoopDatas/namenodeDatas/current/fsimage_0000000000000052563, cpktTxId=0000000000000052563)
2022-01-03 23:54:10,999 ERROR org.apache.hadoop.hdfs.server.namenode.FSImage: Failed to load image from FSImageFile(file=/export/servers/hadoop-3.1.4/hadoopDatas/namenodeDatas/current/fsimage_0000000000000052563, cpktTxId=0000000000000052563)
java.io.IOException: Premature EOF from inputStream
    at org.apache.hadoop.io.IOUtils.readFully(IOUtils.java:212)
    at org.apache.hadoop.hdfs.server.namenode.FSImageFormat$LoaderDelegator.load(FSImageFormat.java:222)
    at org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:962)
    at org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:946)
    at org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImageFile(FSImage.java:807)
    at org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:738)
    at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:336)
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:1132)
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:747)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.loadNamesystem(NameNode.java:652)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:723)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:966)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:939)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1705)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1772)
2022-01-03 23:54:11,015 INFO org.apache.hadoop.hdfs.server.namenode.FSImage: Planning to load image: FSImageFile(file=/export/servers/hadoop-3.1.4/hadoopDatas/namenodeDatas2/current/fsimage_0000000000000052563, cpktTxId=0000000000000052563)
2022-01-03 23:54:11,015 ERROR org.apache.hadoop.hdfs.server.namenode.FSImage: Failed to load image from FSImageFile(file=/export/servers/hadoop-3.1.4/hadoopDatas/namenodeDatas2/current/fsimage_0000000000000052563, cpktTxId=0000000000000052563)
java.io.IOException: Premature EOF from inputStream
    at org.apache.hadoop.io.IOUtils.readFully(IOUtils.java:212)
    at org.apache.hadoop.hdfs.server.namenode.FSImageFormat$LoaderDelegator.load(FSImageFormat.java:222)
    at org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:962)
    at org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:946)
    at org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImageFile(FSImage.java:807)
    at org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:738)
    at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:336)
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:1132)
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:747)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.loadNamesystem(NameNode.java:652)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:723)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:966)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:939)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1705)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1772)
2022-01-03 23:54:11,021 WARN org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Encountered exception loading fsimage
java.io.IOException: Failed to load FSImage file, see error(s) above for more info.
    at org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:752)
    at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:336)
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:1132)
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:747)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.loadNamesystem(NameNode.java:652)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:723)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:966)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:939)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1705)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1772)

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二.解决方案

根据报错信息，发现是读取文件错误，后面即是文件路径名称，我这里是读取两个文件出错，然后删除日志中读取错误的文件（可以提前备份）

我这里已经删除了（.md5可以不删），之后重启hdfs，可以发现namenode已启动

 重新进入hdfs页面

 

原文链接：https://www.cnblogs.com/yuxuan-light-of-Taihu-Lake/p/15761074.html