错误明细:
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- Failed to start namenode.
- java.io.IOException: There appears to be a gap in the edit log. We expected txid 693082, but got txid 693668.
- at org.apache.hadoop.hdfs.server.namenode.MetaRecoveryContext.editLogLoaderPrompt(MetaRecoveryContext.java:94)
- at org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadEditRecords(FSEditLogLoader.java:212)
- at org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadFSEdits(FSEditLogLoader.java:140)
- at org.apache.hadoop.hdfs.server.namenode.FSImage.loadEdits(FSImage.java:846)
- at org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:701)
- at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:292)
- at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:1063)
- at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:767)
- at org.apache.hadoop.hdfs.server.namenode.NameNode.loadNamesystem(NameNode.java:609)
- at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:670)
- at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:838)
- at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:817)
- at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1538)
- at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1606)
错误原因:
原因是namenode元数据被破坏了,需要修复。
解决办法:
输入命令:hadoop namenode -recover
全都选择 ‘c’ 即可