Answer Posted / Lokendra

Debugging Hadoop code involves understanding the MapReduce or YARN programming model and familiarity with tools such as: 1) Hadoop's built-in logging (e.g., logs produced by JobTracker, TaskTracker, NameNode, DataNode). 2) Web UIs provided by Hadoop (e.g., job tracking, cluster browsing). 3) Custom debugging techniques like printing intermediate results to the log or using specialized tools like VisualVM.

did you maintain the hadoop cluster in-house or used hadoop in the cloud?

1077

How you can contact your client everyday ?

1042