@James Gaskin Can you check if this helps - https://community.hortonworks.com/questions/25042/custom-metric-names-in-ambari-metrics.html https://community.hortonworks.com/questions/31192/how-to-add-custom-kafka-metrics-via-ambari-metrics.html ... View more

@nejm hadjmbarek Seems your job is submitted to Yarn and is accepted too but waiting for AM container to allocate. Seems resource constains issue here. Can you check free memory on Yarn UI Also please check below links which might help - http://stackoverflow.com/questions/34467308/mapreduce-job-hangs-waiting-for-am-container-to-be-allocated https://community.hortonworks.com/questions/27334/mapreduce-job-hang-waiting-for-am-container-to-be.html ... View more

@Kuldeep Kulkarni ... View more

Nice Article and Very useful. ... View more

@Silvio del Val For HDFS backup you can do using distcp job. For Hbase pls check this - https://community.hortonworks.com/questions/17836/which-is-best-method-for-taking-backup-of-hbase-da.html ... View more

@Silvio del Val Please post the output of "ls /hbase/replication" (and sub-znodes under it) via your "zookeeper-client" shell command. If there are any znodes under there, you will need to clean them up with rm/rmr in the same shell. Once done, try restarting the HMaster and the cleaner should be able to wipe it away. If you are a hundred percent sure you do not have any form of replication whatsoever in use, nor have any snapshots, you may choose to also delete the oldWAL directory files manually. ... View more