About yagoaparecidoti

yagoaparecidoti · ‎06-23-2023

hello cloudera community, today the cluster already has thousands of blocks in hdfs, more than 23 million blocks. after configuring the rack in the cluster, the hdfs will recognize the racks and will start moving the blocks to the racks to increase the availability of the blocks or will i have to rebalance the hdfs?

yagoaparecidoti · ‎06-22-2023

hi @rki_ / @cjervis , I forgot to ask, today the cluster already has thousands of blocks in hdfs, more than 23 million blocks. after configuring the rack in the cluster, the hdfs will recognize the racks and will start moving the blocks to the racks to increase the availability of the blocks or will i have to rebalance the hdfs?

yagoaparecidoti · ‎06-22-2023

hi @rki_ excellent, thanks a lot for the help. hugs. have a nice day!

yagoaparecidoti · ‎06-22-2023

hi @rki_ , cool! so, by my understanding; if I separate the datanodes in the two physical racks, as shown in the image below, the blocks will be replicated to all datanodes in the two racks, right? with that, if rack_01 goes down, I won't have any data loss, right?

yagoaparecidoti · ‎06-21-2023

hi @cjervis I had already read this documentation before thank you for your help. i really wanted to know, if two racks are enough or the recommended one would be 3

yagoaparecidoti · ‎06-21-2023

I managed to fix the problem. was removed the "Navigator Metadata Server" service from the cluster and added it again.

yagoaparecidoti · ‎06-21-2023

we are planning to separate cluster hosts into 2 physical racks, 10 hosts for each rack. our doubt is: as we only have two physical racks, is it still recommended to use the "rack" option in cloudera manager to separate the hosts?

yagoaparecidoti · ‎06-19-2023

hello cloudera community, I would like to know if the cdh 5.16.2 express version does not have a warning about "Memory Overcommit Validation Threshold"? I did some example tests, configuring more memory than the host has in the services, but we did not receive the alert about "memory overcommitted"

yagoaparecidoti · ‎06-13-2023

we are having trouble starting the "navigator metadata server" service, in the "stderr" log we have the error below: Conflicting collector combinations in option list; please refer to the release notes for the combinations allowed Error: Could not create the Java Virtual Machine. Error: A fatal exception has occurred. Program will exit. can help us with this problem?

yagoaparecidoti · ‎05-30-2023

hello cloudera community Is it possible to know the date and time that a kudu table was accessed/read? i know there is "transient_lastDdlTime" field in kudu table but that field is updated only when the table is updated.

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steps after configuring the rack in the cluster

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no alert - memory overcommit validation threshold

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check date and time of access to some kudu table