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12-07-2017
06:32 PM
Is passwordless installed between the namenode and secondary namenode ( or standby if you are HA ) can you check in the namenode UI the checkpoints ?
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12-05-2017
12:56 PM
@Aditya ok , so what we can do next ?
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12-06-2017
10:04 AM
@Michael Bronson Brief of edits_inprogress__start transaction ID– This
is the current edit log in progress. All transactions starting fromare
in this file, and all new incoming transactions will get appended to
this file. HDFS pre-allocates space in this file in 1 MB chunks for
efficiency, and then fills it with incoming transactions. You’ll
probably see this file’s size as a multiple of 1 MB. When HDFS finalizes
the log segment, it truncates the unused portion of the space that
doesn’t contain any transactions, so the finalized file’s space will
shrink down. . More details about these files and it's functionality can be found at: https://hortonworks.com/blog/hdfs-metadata-directories-explained/
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12-04-2017
05:09 PM
@Michael Bronson, This is because of dependency between the services. These are defined in role_command_order.json. If there is no dependency for the component it can run in parallel between the nodes. However in a particular node the execution will be sequential. You can check the role_command_order.json for different services and their dependencies. Just run the command in ambari server to find all the json files. find /var/lib/ambari-server/ -iname role_command_order.json Thanks, Aditya
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12-05-2017
12:47 AM
@Michael Bronson Can you instead do a # grep namenodes /etc/hadoop/conf/hdfs-site.xml Then get the values of the parameter dfs.ha.namenodes.xxxx Please let me know
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12-03-2017
11:00 PM
from the out file we get that --> Getting jmx metrics from NN failed. URL: http://master03.sys56.com:50070/jmx?qry=Hadoop:service=NameNode,name=FSNamesystem
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12-04-2017
04:41 AM
Hi @Michael Bronson you can refer to following link to How to automatically restart/recovery of HDP services via ambari How do I enable automatic restart / recovery of HDP services via Ambari? Hope this Helps
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12-03-2017
02:26 PM
Wק can abort the deletion by running the following command in zookeeper: rmr /admin/delete_topics/gtom.poli.pri.procis Note that this will only prevent the deletion to proceed if it has not already started. If anything has already been deleted, it's gone
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12-02-2017
07:00 PM
@Jordan - regrading what you said purge the Zookeeper records : do you mean to delete the topic by rmr /brokers/topics/hgpo.llo.prmt.processed from the Zc server
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12-01-2017
06:19 PM
@Michael Bronson The steps described by you looks good. If you have Ambari running against this cluster, you should be able to find an option called "Maintenance mode" in the menus. Here is some documentation about that, https://docs.hortonworks.com/HDPDocuments/Ambari-2.6.0.0/bk_ambari-operations/content/setting_maintenance_mode.html It is not needed for your replace your disks, but it will avoid spurious alerts in your system.
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