When configuring Hadoop for analytics in Pseudo Distributed/Distributed mode the datanode is failing to start up.
(Doc ID 1425774.1)
Last updated on MAY 14, 2021
Applies to:
Oracle WebCenter Sites - Version 2.5 to 2.5.1 [Release FatWire]Information in this document applies to any platform.
Symptoms
When configuring Hadoop for analytics in Pseudo Distributed/Distributed mode the datanode is failing to start up and gives the following exception:
ERROR org.apache.hadoop.dfs.DataNode: java.io.IOException: Incompatible namespaceIDs in /home/hadoop/dfs/data: namenode namespaceID = ; datanode namespaceID =
at org.apache.hadoop.dfs.DataStorage.doTransition(DataStorage.java:226)
at .....
This causes the Analytics jobs to fail since the hadoop jobs and hdfs agent fail to to start.
Changes
Cause
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In this Document
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