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To check the Hadoop server name, you can typically access the Hadoop cluster's web interface by entering the appropriate URL in your web browser. Once you have accessed the web interface, look for the "Cluster Summary" or "Overview" section, which should display the Hadoop server name along with other important information about the cluster.

To use a custom font in Puppeteer running on an Ubuntu server, you will first need to install the font on the server. You can do this by downloading the font file and placing it in a directory on the server.Next, you will need to specify the path to the font file in your Puppeteer script. You can do this by using the font-family property in your CSS styles or by setting the font property directly in your Puppeteer code.For example, if you have downloaded a font file named custom-font.

To submit a Hadoop job from another Hadoop job, you can use the Hadoop JobControl class in Java. This class allows you to submit multiple jobs in a specified order and manage their dependencies.First, you need to create the Hadoop jobs that you want to submit. Each job should have its own configuration settings, input paths, output paths, and mapper/reducer classes defined.Next, you can create a JobControl object and add all the jobs to it using the addJob method.

To handle bulk API requests in a Node.js server, you can first implement a way to process and handle multiple requests efficiently. One approach is to use asynchronous programming techniques such as Promises or async/await to ensure that the server can handle multiple requests concurrently without blocking the main thread.You can also consider batching multiple requests together into a single request to reduce overhead and improve performance.

To install Hadoop using Ambari setup, you first need to have the Ambari server installed on a master node or server. Once Ambari server is set up, you can access the Ambari web interface using a browser. From there, you can create a cluster and add nodes to it. During the cluster creation process, you will have the option to select the Hadoop components you want to install, such as HDFS, MapReduce, YARN, etc.

Hadoop gives reducers a subset of data from the mappers to process and produce the final output. This data is typically sorted and partitioned based on the keys to ensure efficient processing by the reducers. Reducers also receive intermediate outputs from the mappers for further processing, which can significantly reduce the amount of data that needs to be transferred over the network.

A 502 bad gateway error in NGINX typically occurs when the server acting as a gateway or proxy receives an invalid response from an upstream server. To solve this error, you can try the following steps:Check if the upstream server is functioning properly and if it is reachable.Verify the configuration of your NGINX server to ensure that it is correctly set up to communicate with the upstream server.Restart your NGINX server to see if that resolves the issue.

In Hadoop file system, file permissions can be changed using the "chmod" command. To change the file permissions, you can specify the desired permissions using the octal notation. The three digits represent the permissions for the owner, group, and others, respectively.For example, to give read, write, and execute permissions to the owner, and only read permissions to the group and others, you can use the command "hadoop fs -chmod 750 <file path>".

To run Jenkins with Docker on Kubernetes, you can create a Kubernetes deployment that runs the Jenkins server within a Docker container. You would need to first ensure that you have Kubernetes installed and configured for your environment. Then, you would create a Docker image with Jenkins installed and configure it to work with Kubernetes.

To increase the Hadoop filesystem size, you can add more data nodes to the cluster. This will increase the storage capacity available for the Hadoop Distributed File System (HDFS). You can also upgrade the hardware of existing data nodes to have larger storage capacities.Another way to increase the Hadoop filesystem size is to configure the replication factor of the HDFS.