@TonyQiu, as this is an older post, you would have a better chance of receiving a resolution by starting a new thread. This will also be an opportunity to provide details specific to your environment that could aid others in assisting you with a more accurate answer to your question. You can link this thread as a reference in your new post. ... View more

Hi   do we have something similar for cloudera (custom alerts)?   Regads Amjad ... View more

Ah, sorry, try /var/log/hadoop-yarn/yarn ... View more

Yes, you can - the above calls can capture it on a host/component basis. ... View more

Thanks @Jonathan Hurley got your point regarding raising question. My @Namenode was on Safemode that time when i was facing this alert. i put the @namenode into Normal mode. now the alert Purge. is this exactly the reason ? whats your views Thanks ... View more

Thank you.. ... View more

I found the root cause, ambari user which is created for oracle DB not have enough privileges to drop the Constraint. When I run ambari-server update the constraint is not dropping and not replacing new constraint. ... View more

Yes, this node was part of one of the old HDP installations. However we have uninstalled that now and shifted to 2.5.3, a more stabler release. Have undertaken the current steps : 1) Deleted old 2.3.4 and current folder under /usr/hdp 2) Restarted the ambari agent 3) Added the new host again and took care of host run check issues (like pre-existing old 2.3.4 packages and users and folders. Have removed them) 4) Node was successfully added. But had to install a new rpm python-argparse 5) Added DataNode, Node Manager and clients in the new node successfully Through ambari I can now see this node added successfully with required services. ... View more

I'm getting the same error after installation. I grepped the /var/log/accumulo/tserver_hostname.log and found a report of: ERROR: Exception while checking mount points, halting process java.io.FileNotFoundException: /proc/mounts (Too many files open) After looking the open files I discovered 136K java open files and 106K jsvc open files, given I set a descriptor limit of 20K I think this might be my problem $> lsof | awk '{print $1}' | sort | uniq -c | sort -n -k1 ... 106000 jsvc 136000 java I'm digging into this now too. This cluster has no jobs running I'm surprised to see so many open files... ... View more

Thanks Jonathan, i have been battling with this for a week, this tip helped, i had symlink errors with accumulo-client installation of HDP 2.4 ... View more