we are trying to start the "Standby NameNode (HDFS)" on master01 machine in ambari cluster version 2.6 and we cant start it we get the following logs: ERROR namenode.NameNode (NameNode.java:main(1774)) - Failed to start namenode. org.apache.hadoop.hdfs.server.namenode.EditLogInputException: Error replaying edit log at offset 0. Expected transaction ID was 13361263 at org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadEditRecords(FSEditLogLoader.java:203) at org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadFSEdits(FSEditLogLoader.java:143) at org.apache.hadoop.hdfs.server.namenode.FSImage.loadEdits(FSImage.java:838) at org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:693) at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:289) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:1045) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:703) at org.apache.hadoop.hdfs.server.namenode.NameNode.loadNamesystem(NameNode.java:688) at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:752) at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:992) at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:976) at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1701) at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1769) Caused by: org.apache.hadoop.hdfs.server.namenode.RedundantEditLogInputStream$PrematureEOFException: got premature end-of-file at txid 13361262; expected file to go up to 13361312 what chould be the problem m and how to fix , so the service will start? ... View more

we have ambari cluster - 2.6 we restart the masters machine and start the services when we start the zookeeper on master01 machine we get this from the log 2017-10-20 05:43:53,339 - INFO [main:NIOServerCnxnFactory@94] - binding to port 0.0.0.0/0.0.0.0:2181 2017-10-20 05:43:53,342 - ERROR [main:QuorumPeerMain@89] - Unexpected exception, exiting abnormally java.net.BindException: Address already in use at sun.nio.ch.Net.bind0(Native Method) so zookeeper cant start on master01 and master02 machine what chould be the problem here? ... View more

we have 3 masters machines on both masters machine yarn is active insted to be active stand by what is the procedure to change it to yarn standby on master01 and yarn active on master02 ... View more

our 3 master machines was crashed , and we build new 3 masters machines ( without to delete the workers ) so now we need to re-add the current workers to the cluster when we add the workers machine to the ambari cluster we stuck in point that wizard tell us the worker already installed how to solve this issuie from this point ? ... View more

I Add Node to cluster - Assign Slaves and Clients window doesn't go forward. (I want to add new node to the ambari cluster ) I have registered a host successfully. Put tick marks on the slaves and client boxes, however, unable to go forward after that. ( the <next> button not active ) How to enable the next button to continue the add node process ... View more