About yosuke

yosuke · ‎05-11-2021

@Shelton Thank you for the response. I haven't checked the settings yet, however we don't configure THP setting to disabled. I googled and found some article saying THP is not for Hadoop workload like below. https://community.cloudera.com/t5/Community-Articles/OS-Configurations-for-Better-Hadoop-Performance/ta-p/247300 I think you pointed out that our NodeManager went wrong due to the some workload happened and our node running NodeManager couldn't deal with it. Is my understanding correct? I will configure this in our test environment first. Not knowing how this situation happened, I need some time to verify. If any progress or additional query, I will post again. Thank you very much again. Best regards, Yosuke

yosuke · ‎05-08-2021

Hi, I'm running a 6-node Hadoop Cluster, which version is HDP 3.1.4, and faced a weird situation so could anyone please help me out. Checking on Ambari WebUI, NodeManagers which is consisted of 3 nodes seem just fine. However when we push a application into yarn, all the app failed. Investigating the situation and log files, I found one of the NodeManager node's WebUI not responding and emitting the following log. WARN org.apache.hadoop.util.SysInfoLinux: Couldn't read /proc/meminfo: can't determine memory settings By restarting the NodeManager Service, this situation is resolved for a moment but seems reproducible. Does anyone faced same problem? Any comment is highly appreciated. Thank you in advance. Best Regards, Yosuke

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Re: NodeManager doesn't work properly though it se...

NodeManager doesn't work properly though it seems ...