Some Configs in hdfs-default.xml

Hi All, There are default values of configs in hdfs-default.xml and core-default.xml, and I am wondering which situation are they for? Are they closer to lab use, or closer to real production environment? Maybe it depends on different configs, then I have questions to these

Recommendation for Resourcemanager GC configuration

Hello, I wanted to know if there is any recommendation for ResourceManager GC settings. Full GC (with Parallel GC, 8 threads) is sometimes taking more than 30 sec due to which state store sessions to Zookeeper time out resulting in FATAL errors. The YARN cluster is heavily used with 1000’s of

Re: Recommendation for Resourcemanager GC configuration

Hi Puneet Can you take a heap dump and see where most of the churn is? Is it lots of small applications / few really large applications with small containers etc. ? Cheers Ravi On Wed, Aug 23, 2017 at 9:23 AM, Ravuri, Venkata Puneet wrote: > Hello, > > > > I wanted to know if

Re: Some Configs in hdfs-default.xml

Hi Doris! I'm not sure what the difference between lab / production use is. All configuration affects some behavior of the Hadoop system. Usually the defaults are good for small clusters. For larger clusters, it becomes worthwhile to tune the configuration. 1.

Re: Recommendation for Resourcemanager GC configuration

Hi Puneet, Along with the heap dump details, I would also like to know the version of the Hadoop-Yarn being used, size of the cluster, all Memory configurations, and JRE version. Also if possible can you share the rational behind the choice for Parallel GC collector over others (CMS or G1) ?

Re: Recommendation for Resourcemanager GC configuration

What is the ResourceManager JVM’s heap size? What is the value for the configuration yarn.resourcemanager.max-completed-applications? +Vinod > On Aug 23, 2017, at 9:23 AM, Ravuri, Venkata Puneet wrote: > > Hello, > > I wanted to know if there is any recommendation for