Hadoop ERROR datanode DataNode java io IOException Incompatible namespaceIDs in app hadoop tmp dfs data namenode namespaceID 1580775695 datanode namespaceID 1494801914

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Can anyone solve the above issue and give solution to this above error?
Aug 5, 2019 in Big Data Hadoop by Sudarshan
 • 886 views

1 answer to this question.

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Hi,

Namenode generates new namespaceID every time you format HDFS. 

bin#vi /app/hadoop/tmp/dfs/data/current/VERSION

Manually update the namespaceID = 1494801914 to 1580775695, and save the file:

namespaceID=1580775695

storageID=DS-469635027-127.0.0.1-50010-1376974011263

cTime= 1377582559943

storageType=DATA_NODE

layoutVersion=-32
answered Aug 5, 2019 by Gitika
 • 65,910 points

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