There is another topic that may be related to your issue http://community.cloudera.com/t5/Interactive-Short-cycle-SQL/After-upgrading-to-cdh-5-14-2-Impala-daemon-stopped-suddenly/m-p/66472#M4357   In a few words Impala 2.11 has an issue that causes minidumps and a ticket was opened https://issues.apache.org/jira/browse/IMPALA-6882   Can you check if you have the same problem? Does your cpu has the "popcnt" flag? ... View more

There is no need to have a separate area only for oozie workflows. I understand that we were used to it. But I think the new interface is better, once you get familiar with. So, if you go to documents and select the one you want to copy, press the three vertical dots icon and the following menu will appear.   If you want to see only the oozie workflows, you can customize your view. On the left side of search button, there is a drop down (by default is "All") menu where you can select only oozie workflows to be displayed. ... View more

There should be no impact. It is the same private key. You just encrypt it with a password. ... View more

No you don't have to stop all Management Services. Only Navigator Metadata Server is enough, but you can stop also Navigator Audit server if you feel more safe. ... View more

If you delete the log files that end with a number (e.g. mgmt-cmf-mgmt-NAVIGATORMETASERVER-my.node.com.log.out.1), then you will have no issue. Don't delete the ones with ".log" suffix, because they are open for writing by services.   Suppose that you have Max Logs Size = 200MB Maximum Log File Backups = 10   That means that each time your .log file reaches 200MB will be rolled, for ten times in total (will be copied to .log.1, .log.2,.....,.log.10). So in total, the log files of a service can occupy up to ((10* 200MB) + 200MB)=2200MB.     Depending on your disk size you can reduce only one or both of them, depending on what is better for you. E.g. if you don't want so big files you can set "Max Log Size"=100MB, that means ((10*100MB) + 100MB) = 1100 MB. So just reducing this parameter into half, you save 1100MB of disk space.   The same applies to all services. ... View more

Use the example I wrote above. It will change the owner of /inputnew directory in hdfs to "cloudera" sudo -u hdfs hdfs dfs -chown cloudera /inputnew ... View more