how to delete worker or kafka node from cluster by manual way because some times we cant delete the node from the ambari ( not clear why ) , and in this case we want to do the deletion by manual approach ( for example delete folder / users / rpm manual from the Linux machine ) ... View more

we installed new HDP cluster version 2.6 meanwhile HDFS and yarn are down and when we start the HDFS we get: 2017-10-23 16:39:35,510 ERROR datanode.DataNode (DataNode.java:secureMain(2691)) - Exception in secureMain org.apache.hadoop.util.DiskChecker$DiskErrorException: Too many failed volumes - current valid volumes: 0, volumes configured: 5, volumes failed: 5, volume fail ures tolerated: 0 at org.apache.hadoop.hdfs.server.datanode.checker.StorageLocationChecker.check(StorageLocationChecker.java:216) at org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:2583) at org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:2492) at org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:2539) at org.apache.hadoop.hdfs.server.datanode.DataNode.secureMain(DataNode.java:2684) at org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:2708) 2017-10-23 16:39:35,512 INFO util.ExitUtil (ExitUtil.java:terminate(124)) - Exiting with status 1 2017-10-23 16:39:35,515 INFO datanode.DataNode (LogAdapter.java:info(47)) - SHUTDOWN_MSG: what we need to check in this case ? ... View more