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How to update NameNode Configuration with HA enabl...

by New Contributor in Support Questions
‎11-09-2017 04:55 PM
‎11-09-2017 04:55 PM
I need to update NameNode Heap Size because we keep receiving NAMENODE_PAUSE_DURATION alerts.    I'm going to change this configuration in cloudera Manager: HDFS -> Configuration -> NameNode ->  Java Heap Size of Namenode in Bytes.    I believe Cloudera Manager will ask to restart the NameNode service. Will the restart break the clients?   Or I should do manually.   Restart StandBy after updating the configuration. Manually failover to StandBy. Restart Active, Then manually failover to Active. I'm running CM/CDH 5.3.2 with HA enabled.   ... View more
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Re: python process takes 100% cpu time

by New Contributor in Support Questions
‎10-20-2017 01:20 PM
‎10-20-2017 01:20 PM
The culprit is "Send Diagnostic Data to Cloudera Automatically" in Administration -> Settings -> Support. Because my cluster is running CDH 5.3.2, I guessed Cloudera probably shut down a service, so my cluster could not connect to the service, then the agent became crazy. After turning that off, such an issue never happen again. ... View more

Hadoop data nodes with different disk space

by New Contributor in Support Questions
‎02-13-2017 12:23 PM
‎02-13-2017 12:23 PM
If I have a cluster with two kinds of data nodes, one has 48TB disks and the other has 7TB disks. Will HDFS block placement strategy consider the free space of disk on a data node?   If I run a Spark job, will the final write operation take the free disk space into consideration?   I could not find the answer by myself. Could you point me some document talking about this?   Thanks ... View more
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Re: python process takes 100% cpu time

by New Contributor in Support Questions
‎11-16-2016 05:08 PM
‎11-16-2016 05:08 PM
I'm running Cloudera Manager 5.3.2 and have the exact same issue every Wednesday at sometime between 4:00pm to 4:40pm. Because the cloudera-scm-agent is too busy, cloudera manager sends a lot of warnings and errors.    It suddenly happened in July, 2016. Before that, it had been running ok for a year. I have to restart the service clouder-scm-agent when this happens.   Is there something I can do? We may not upgrade to the latest version soon. ... View more
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Date Registered ‎11-16-2016 05:08 PM
Last Visited ‎01-09-2018 03:44 PM
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