java.io.IOException

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    • java.io.IOException: Incompatible namespaceIDs in /app/hadoop/tmp/dfs/data: namenode namespaceID = 1955988395; datanode namespaceID = 1705269445 at org.apache.hadoop.hdfs.server.datanode.DataStorage.doTransition(DataStorage.java:232) at org.apache.hadoop.hdfs.server.datanode.DataStorage.recoverTransitionRead(DataStorage.java:147) at org.apache.hadoop.hdfs.server.datanode.DataNode.startDataNode(DataNode.java:414) at org.apache.hadoop.hdfs.server.datanode.DataNode.<init>(DataNode.java:321) at org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:1712) at org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:1651) at org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:1669) at org.apache.hadoop.hdfs.server.datanode.DataNode.secureMain(DataNode.java:1795) at org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:1812)

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