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Suspicious object analysis The handling of suspicious objects can be compared with the event difference from several coordinate distances of their traces. If it is logical, it can be considered that the current object is not suspicious. If it is suspicious, save the result first and enter the suspicious object library. By acq ...

Tuesday, 08. October 2019 11:01 am Initial preparation: 1. jdk installation Do the following on all three machines (depending on the number of machines you have): 1) you can install jdk through apt get, execute whereis java on the command line to get the installation path of java, or download the installation package of jdk manually f ...

Look at the code first. This class of code is relatively short. The directory is deploy/rest / below. private[spark] class RestSubmissionClientApp extends SparkApplication { /** Submits a request to run the application and return the response. Visible for testing. */ def run( appResource: String, mainClass: String, a ...

1. Preparations (the tool library used will be placed at the end for download) 1.1. Install thrift   cmd>pip install thrift I use Anaconda3. The downloaded packages will be stored in the / Lib/site-packages / directory. If you don't use Anaconda3, you can put the following two folders directly ...

Some related tests were carried out for spark: wordcount test for spark, feasible test for spark streaming, and test for Kafka message production. 6.1 spark word count test The spark test case is used to test whether spark can be operated or not. import org.apache.spark.{SparkConf, SparkContext} object ...

0x00 Preface In fact, the Future model is not far away from us. If you have been exposed to such excellent open source projects as Spark and Hadoop, pay attention to their output logs when you run the program. If you are not careful, you will find Future. There are many excellent design patterns in the field of concurrent programming, such as t ...

The fourth picture makes spark, because there is spark interference in the welding process, and it has a great impact. Sparks have a great influence on the image. Large sparks directly affect some characteristics of steel plate. My first idea is to use contour extraction to calculate the contour area. In a certain range, I think that the ...

Other blogger posts: http://blog.csdn.net/dhmpgt/article/details/9998321 Maven Tools for managing project jar packages automatically download the corresponding jar packages from the server library to the project based on the configuration file. Prepare the file: install 1) Unzip repository to D:/maven/repositoryserver as Maven loca ...

In the previous article, "Understanding Spark 2.1 Core (9): Iterative Computing and Principles and Source Code Analysis of Shuffle", Sort Shuffle Writer. // According to the sorting method, the data is sorted and written to the memory buffer. // If the calculation results in the sorting exceed the threshold value, // Overwr ...

Shuffle Output Tracker As an auxiliary component of shuffle, this component plays an important role in the whole shuffle module. In the previous series of analyses, we mentioned this component more or less. For example, when DAGScheduler submits a stage, it encapsulates the stage as a TaskSet, but the possible partitions have been computed and ...