Pass the Huawei HCIA-Big Data H13-711_V3.0 Questions and answers with ExamsMirror

In the task scheduling process of YARN, which of the following is the task that the ApplicationMaster is responsible for?

Kafka is a distributed message publishing and subscription system. It only forwards messages and does not save messages.

The data stream of F1ume can be sent to different Channels according to the headers information.

HMaster needs to be connected when using HBase for data reading service in Fusioninsight HD

BloomFilter of HBase is used to filter data.

If the physical memory utilization of some Containers exceeds the configured memory threshold, but the total memory utilization of all Containers does not exceed the set NodeManager1 memory threshold, then the Containert with excessive memory usage can still continue to run.

The label-based scheduling of YARN is to label which of the following options?

The checkpoint mechanism in Flink continuously draws snapshots of streaming applications. The state snapshots of streaming applications can only be saved in the HDFS file system

Channel supports transactions and provides weaker order guarantees. Any number of Sources and Sinks can be connected.

In Spark SQL tables, there are often many small files (the size is much smaller than the HDFS block size). In this case, Spark will start more Tasks to process these small files. When there is a Shuffle operation in the SQL logic, it will Greatly increase the number of hash buckets. This seriously affects performance.

When using Loaderi for data import and export, data processing must go through the Reducel stage

In Huawei Fusioninsight, HBase's table design tool, connection pool management and enhanced $DK can simplify the business development of complex data tables.

Fusioninsight tool is a set of health detection tools provided for technical support engineers and maintenance engineers. It can check the health status of cluster-related nodes and services, discover potential problems in the cluster in advance, and generate health check reports. It is convenient for technical support engineers and maintenance engineers to quickly understand the health status of the system.

If you want to add 1 to the digital value stored in the Key, which command should you use?

Spark on YARN-clienti is suitable for production environment because it can see the output of APP faster.