@Rajesh Reddy You are not supposed to change the "/usr/lib/ambari-server/web/javascripts/app.js" manually. If the ambari installation is properly done then you should get the correct version mentioned in the "app.js". Because this is done at the Ambari RPM Build time. Ambari uses the following script to update the App.version during the time of RPM build. https://github.com/apache/ambari/blob/release-2.4.1/ambari-web/set-ambari-version.sh#L24 . So if you see that your "/usr/lib/ambari-server/web/javascripts/app.js" was showing some other version then it indicates that during ambari upgrade on that host this file was not upgraded properly and hence there may be some other files as well that might not be upgraded properly which might be causing the Stuck UI issue. . Please try doing a ambari re-install as following to see it it helps: (Always recommended to take a fresh DB dump for safety) yum reinstall ambari-server . Can you let us know what was the older verison mentioned in the "App.version" ? Was it showing "2.0.0" earlier before your manual edit ? . ... View more

@nshelke Are you looking out for some information's like mentioned in : https://hortonworks.com/blog/fault-tolerant-nimbus-in-apache-storm/ ... View more

@Michael Allen Also initially we see that you are getting this error: 'ambari-sudo.sh /usr/bin/hdp-select set all `ambari-python-wrap /usr/bin/hdp-select versions | grep ^2.6 | tail -1`' returned 1. ERROR: set command takes 2 parameters, instead of 1 Above error can occur only when the second argument after the "all" is null. For example: (If we do not pass the second argument then it will fail as following) [root@sandbox hdp]# /usr/bin/hdp-select set all ERROR: set command takes 2 parameters, instead of 1 - So in your case i am suspecting that the second argument is becoming null (empty) In order to verify the same can you please check what is the output of the following command you are getting? [root@sandbox bin]# echo `ambari-python-wrap /usr/bin/hdp-select versions | grep ^2.6 | tail -1` 2.6.0.3-8 - If you have HDP 2.6 repo properly configured and if your "/usr/hdp" directory has the correct contents including the "2.6.0.3-8" directory then it should return the result else the result might be empty. Example: [root@sandbox bin]# echo `ambari-python-wrap /usr/bin/hdp-select versions | grep ^2.6 | tail -1` 2.6.0.3-8 [root@sandbox bin]# echo `ambari-python-wrap /usr/bin/hdp-select versions | grep ^2.7 | tail -1` [root@sandbox bin]# ls -l /usr/hdp/ total 16 drwxr-xr-x 32 root root 4096 Apr 19 19:13 2.5.0.0-1245 drwxr-xr-x 1 root root 4096 Apr 19 19:13 2.6.0.3-8 drwxr-xr-x 1 root root 4096 May 24 04:09 current drwxr-xr-x 1 root root 4096 Apr 19 19:11 share . So please check if your "/usr/hdp" directory is containing the "2.6.0.3-8" directory or not else the second argument of the hdp-select set all <null> command will show the same error. . ... View more