Spark submit files - Jul 26, 2021 · In Short : · Using spark-submit, the user submits an application. · In spark-submit, we invoke the main () method that the user specifies. It also launches the driver program. · The driver ...

 
Jul 26, 2021 · In Short : · Using spark-submit, the user submits an application. · In spark-submit, we invoke the main () method that the user specifies. It also launches the driver program. · The driver ... . Scenic

When you wanted to spark-submit a PySpark application (Spark with Python), you need to specify the .py file you wanted to run and specify the .egg file or .zip file for dependency libraries. Below are some of the options & configurations specific to run pyton (.py) file with spark submit. besides these, you can also use most of the options ... In case if you wanted to run a PySpark application using spark-submit from a shell, use the below example. Specify the .py file you wanted to run and you can also specify the .py, .egg, .zip file to spark submit command using --py-files option for any dependencies. ./bin/spark-submit \ --master yarn \ --deploy-mode cluster \ wordByExample.py.Jun 23, 2020 · Pass system property to spark-submit and read file from classpath or custom path. 2 adding external property file to classpath in spark. 0 ... We are using Spark 2.3.0 on Yarn in pseudo distributed mode. We need to query a postgres table from spark whose configurations are defined in a properties file. I passed the property file using --files attribute of spark submit. To read the file in my code I simply used java.util.Properties.PropertiesReader class. Apr 12, 2021 · I have an AWS CLI cluster creation command that I am trying to modify so that it enables my driver and executor to work with a customized log4j.properties file. With Spark stand-alone clusters I have successfully used the approach of using the --files <log4j.file> switch together with setting -Dlog4j.configuration=<log4j.file> specified via ... For Python, you can use the --py-files argument of spark-submit to add .py, .zip or .egg files to be distributed with your application. If you depend on multiple Python files we recommend packaging them into a .zip or .egg. Launching Applications with spark-submit. Once a user application is bundled, it can be launched using the bin/spark ... The second precedence goes to spark-submit options. Finally, properties specified in spark-defaults.conf file. When you are setting jars in different places, remember the precedence it takes. Use spark-submit with --verbose option to get more details about what jars Spark has used. 2.1 Add jars to the classpath using –jar OptionApr 7, 2016 · 21. First you need to pass your files through --py-files or --files. When you pass your zip/files with the above flags, basically your resources will be transferred to temporary directory created on HDFS just for the lifetime of that application. Now in your code, add those zip/files by using the following command. 3 Answers. No, spark-submit --files option doesn't support sending folder, but you can put all your files in a zip, use that file in --files list. You can use SparkFiles.get (filename) in your spark job to load the file, explode it and use exploded files. 'filename' doesn't need to be absolute path, just filename does it.I am trying to submit a spark job using 'gcloud dataproc jobs submit spark'. To connect to ES cluster I need to pass the truststore path. The job is successful if I copy the truststore file to all the worker nodes and give the absolute path as below:From the GitHub repository’s local copy, run the following command, which will execute a Python script to load the three spark-submit commands from JSON-format file, job_flow_steps/job_flow ...command options. You specify spark-submit options using the form --option value instead of --option=value . (Use a space instead of an equals sign.) Option. Description. class. For Java and Scala applications, the fully qualified classname of the class containing the main method of the application. For example, org.apache.spark.examples.SparkPi.I want to load a property config file when submit a spark job, so I can load the proper config due to different environment, such as a test environment or a product environment. But I don't know where to put the properties file, here is the code loading the properties file:Spark-submit can't locate local file. Ask Question Asked 5 years, 10 months ago. Modified 5 years, 10 months ago. Viewed 8k times 2 I've written a very simple python ...The Spark shell and spark-submit tool support two ways to load configurations dynamically. The first is command line options, such as --master, as shown above. spark-submit can accept any Spark property using the --conf/-c flag, but uses special flags for properties that play a part in launching the Spark application.Actually When using spark-submit, the application jar along with any jars included with the --jars option will be automatically transferred to the cluster. Your extra jars could be added to --jars, they will be copied to cluster automatically. please refer to "Advanced Dependency Management" section in below link:For Python, you can use the --py-files argument of spark-submit to add .py, .zip or .egg files to be distributed with your application. If you depend on multiple Python files we recommend packaging them into a .zip or .egg. Launching Applications with spark-submit. Once a user application is bundled, it can be launched using the bin/spark ... The Spark shell and spark-submit tool support two ways to load configurations dynamically. The first is command line options, such as --master, as shown above. spark-submit can accept any Spark property using the --conf/-c flag, but uses special flags for properties that play a part in launching the Spark application.We are using Spark 2.3.0 on Yarn in pseudo distributed mode. We need to query a postgres table from spark whose configurations are defined in a properties file. I passed the property file using --files attribute of spark submit. To read the file in my code I simply used java.util.Properties.PropertiesReader class.file: Driver will transfer these files to Executor through HTTP, if in cluster deploy mode, Spark will first upload these file to cluster Driver. hdfs:, http:, https:, ftp: Driver and Executors will download specified files from correspond fs. local: The file is expected to exist as a local file on each worker node. referenceThe spark-submit job will setup and configure Spark as per our instructions, execute the program we pass to it, then cleanly release the resources that were being used. A simply Python program passed to spark-submit might look like this: """ spark_submit_example.py An example of the kind of script we might want to run. The modules and functions ...But when I copy the same to my properties file: spark.class MyClass spark.master spark://my_master spark.files test.config spark.jars build/jars/MyProject.jar, build/jars/Config.jar On trying to use this file with spark-submit, I get an error: java.lang.IllegalArgumentException: Missing application resourceMar 23, 2017 · I am currently running spark 2.1.0. I have worked most of the time in PYSPARK shell, but I need to spark-submit a python file(similar to spark-submit jar in java) . 21. First you need to pass your files through --py-files or --files. When you pass your zip/files with the above flags, basically your resources will be transferred to temporary directory created on HDFS just for the lifetime of that application. Now in your code, add those zip/files by using the following command.Once application is built, spark-submit command is called to submit the application to run in a Spark environment. Use --jars option. To add JARs to a Spark job, --jars option can be used to include JARs on Spark driver and executor classpaths. If multiple JAR files need to be included, use comma to separate them. The following is an example:Feb 12, 2019 · 2. In my Spark job I read some additional data from resources files. Some example Resources.getResource ("/more-data") It works great locally, and when I run from spark-submit master=local [*] I only to need to add --conf=spark.driver.extraClassPath=moredata. Moving to cluster mode (Yarn) it is no longer able to find the folder. 1. I am using spark 2.4.1 version and java8. I am trying to load external property file while submitting my spark job using spark-submit. As I am using below TypeSafe to load my property file. <groupId>com.typesafe</groupId> <artifactId>config</artifactId> <version>1.3.1</version>. In my code I am using.spark.yarn.submit.file.replication: The default HDFS replication (usually 3) HDFS replication level for the files uploaded into HDFS for the application. These include things like the Spark jar, the app jar, and any distributed cache files/archives. 0.8.1: spark.yarn.stagingDir: Current user's home directory in the filesystem Apr 7, 2016 · 21. First you need to pass your files through --py-files or --files. When you pass your zip/files with the above flags, basically your resources will be transferred to temporary directory created on HDFS just for the lifetime of that application. Now in your code, add those zip/files by using the following command. Spark environment provides a command to execute the application file, be it in Scala or Java(need a Jar format), Python and R programming file. The command is, $ spark-submit --master <url> <SCRIPTNAME>.py. I'm running spark in windows 64bit architecture system with JDK 1.8 version. P.S find a screenshot of my terminal window. Code snippetI want to load a property config file when submit a spark job, so I can load the proper config due to different environment, such as a test environment or a product environment. But I don't know where to put the properties file, here is the code loading the properties file:The spark-submit compatible command in Data Flow , is the rub-submit command. If you already have a working Spark application in any cluster, you are familiar with the spark-submit syntax. For example: spark-submit --master spark://<IP-address>:port \ --deploy-mode cluster \ --conf spark.sql.crossJoin.enabled=true \ --files oci://file1.json ... Spark submit command ( spark-submit ) can be used to run your Spark applications in a target environment (standalone, YARN, Kubernetes, Mesos).&nbsp; There are three commonly used arguments: --num-executors&nbsp; --executor-cores&nbsp; --executor-memory . This argument only works on YARN and ...2. When using spark-submit with --master yarn-cluster, the application JAR file along with any JAR file included with the --jars option will be automatically transferred to the cluster. URLs supplied after --jars must be separated by commas. That list is included in the driver and executor classpaths.--py-files PY_FILES Comma-separated list of .zip, .egg, or .py files to place on the PYTHONPATH for Python apps. So your command will look as follow spark-submit --master local --driver-memory 2g --executor-memory 2g --py-files s3_path\file2.py,s3_path\file3.py,s3_path\file4.py s3_path\file1.pyfor me, run spark on yarn,just add --files log4j.properties makes everything ok. 1. make sure the directory where you run spark-submit contains file "log4j.properties". 2. run spark-submit ... --files log4j.properties. let's see why this work. 1.spark-submit will upload log4j.properties to hdfs like this 1. --files comma-separated files list. Comma-separated list of files that are deposited in the working directory of each and every Executor using YARN Cluster Mode if memory serves correctly. Use case is (although never used myself) is configuration info that you can read in as opposed to using args [x] approach. Share.To make files on the client available to SparkContext.addJar, include them with the --jars option in the launch command. $ ./bin/spark-submit --class my.main.Class \ --master yarn \ --deploy-mode cluster \ --jars my-other-jar.jar,my-other-other-jar.jar \ my-main-jar.jar \ app_arg1 app_arg2.I want to load a property config file when submit a spark job, so I can load the proper config due to different environment, such as a test environment or a product environment. But I don't know where to put the properties file, here is the code loading the properties file:spark.yarn.submit.file.replication: The default HDFS replication (usually 3) HDFS replication level for the files uploaded into HDFS for the application. These include things like the Spark jar, the app jar, and any distributed cache files/archives. spark.yarn.stagingDir: Current user's home directory in the filesystemActually When using spark-submit, the application jar along with any jars included with the --jars option will be automatically transferred to the cluster. Your extra jars could be added to --jars, they will be copied to cluster automatically. please refer to "Advanced Dependency Management" section in below link:Oct 21, 2016 · All the keys needs to be prefixed with spark. then use the spark-submit command like this to pass the properties file. bin/spark-submit --properties-file propertiesfile.properties. Then in the code you can get the keys using below sparkcontext getConf method. sc.getConf.get ("spark.key1") // returns value1. java.io.FileNotFoundException for a file sent in Spark-submit --files. 1. How to pass arguments to spark-submit using docker. 0. Running Scala Jar with Spark-Submit. 4.Pass system property to spark-submit and read file from classpath or custom path. 2 adding external property file to classpath in spark. 0 ...I want to submit a pyspark task. And some .py files in different folders.Especially I want put configuration files and common tools in only one folder. But when I submit a pyspark task, I just know --py-files param, so how to submit folders? My code struct likes:Once application is built, spark-submit command is called to submit the application to run in a Spark environment. Use --jars option. To add JARs to a Spark job, --jars option can be used to include JARs on Spark driver and executor classpaths. If multiple JAR files need to be included, use comma to separate them. The following is an example:6,344 24 92 174 Add a comment 2 Answers Sorted by: 8 You can use --properties-file which should include parameters with starting keyword spark like spark.driver.memory 5g spark.executor.memory 10g And command should look like:For the 5th process I am using a spark-submit command as this process needs to leverage spark because of the size of the data being processed. I am running into issues with JDBC and Kerberos Authnetication with the spark-submit command. The Oracle @Configuration is the same for all of these processes. It works fine and authenticates fine with a ...I am trying to submit a spark job using 'gcloud dataproc jobs submit spark'. To connect to ES cluster I need to pass the truststore path. The job is successful if I copy the truststore file to all the worker nodes and give the absolute path as below:Aug 3, 2023 · The second precedence goes to spark-submit options. Finally, properties specified in spark-defaults.conf file. When you are setting jars in different places, remember the precedence it takes. Use spark-submit with --verbose option to get more details about what jars Spark has used. 2.1 Add jars to the classpath using –jar Option I am trying to submit a spark job using 'gcloud dataproc jobs submit spark'. To connect to ES cluster I need to pass the truststore path. The job is successful if I copy the truststore file to all the worker nodes and give the absolute path as below:Pass --jars with the path of jar files separated by , to spark-submit.. For reference:--driver-class-path is used to mention "extra" jars to add to the "driver" of the spark job --driver-library-path is used to "change" the default library path for the jars needed for the spark driver --driver-class-path will only push the jars to the driver machine.Apr 21, 2017 · It turned out that since I'm submitting my application in client mode, then the machine I run the spark-submit command from will run the driver program and will need to access the module files. I added my module to the PYTHONPATH environment variable on the node I'm submitting my job from by adding the following line to my .bashrc file (or ... As suspected, the two options ( sc.addFile and --files) are not equivalent, and this is (admittedly very subtly) hinted at the documentation (emphasis added): addFile (path, recursive=False) Add a file to be downloaded with this Spark job on every node. --files FILES. Comma-separated list of files to be placed in the working directory of each ...When you wanted to spark-submit a PySpark application (Spark with Python), you need to specify the .py file you wanted to run and specify the .egg file or .zip file for dependency libraries. Below are some of the options & configurations specific to run pyton (.py) file with spark submit. besides these, you can also use most of the options ... 1 Answer. One way is to have a main driver program for your Spark application as a python file (.py) that gets passed to spark-submit. This primary script has the main method to help the Driver identify the entry point. This file will customize configuration properties as well initialize the SparkContext. The ones bundled in the egg executables ...This mode is preferred for Production Run of a Spark Applications or Jobs. Client mode - In client mode, the driver run will run in the local machine (your laptop\desktop terminal). This mode is used for Testing , Debugging or To Test Issue Fixes of a Spark Application or job. However although the the driver runs locally but all the executors ...Jul 21, 2018 · But when I copy the same to my properties file: spark.class MyClass spark.master spark://my_master spark.files test.config spark.jars build/jars/MyProject.jar, build/jars/Config.jar On trying to use this file with spark-submit, I get an error: java.lang.IllegalArgumentException: Missing application resource For a comprehensive list of all configurations that can be passed with spark-submit, just run spark-submit --help. In this link provided by @suj1th, they say that: configuration values explicitly set on a SparkConf take the highest precedence, then flags passed to spark-submit, then values in the defaults file. Jun 4, 2017 · Usage: spark-submit --status [submission ID] --master [spark://...] Usage: spark-submit run-example [options] example-class [example args] As you can see in the first Usage spark-submit requires <app jar | python file>. The app jar argument is a Spark application's jar with the main object (SimpleApp in your case). You can build the app jar ... Sep 22, 2020 · I am figuring out how to submit pyspark job developed using pycharm ide . there are 4 python files and 1 python file is main python file which is submitted with pyspark job but rest other 3 files are imported in main python file , but I am not able to understand if my python files all are available in s3 bukcet , how spark job would be able to r... All the keys needs to be prefixed with spark. then use the spark-submit command like this to pass the properties file. bin/spark-submit --properties-file propertiesfile.properties. Then in the code you can get the keys using below sparkcontext getConf method. sc.getConf.get ("spark.key1") // returns value1.The spark-submit job will setup and configure Spark as per our instructions, execute the program we pass to it, then cleanly release the resources that were being used. A simply Python program passed to spark-submit might look like this: """ spark_submit_example.py An example of the kind of script we might want to run. The modules and functions ...Aug 1, 2023 · Spark-Submit Compatibility. You can use spark-submit compatible options to run your applications using Data Flow. Spark-submit is an industry standard command for running applications on Spark clusters. The following spark-submit compatible options are supported by Data Flow: --conf. --files. --py-files. --jars. You can pass the arguments from the spark-submit command and then access them in your code in the following way, sys.argv[1] will get you the first argument, sys.argv[2] the second argument and so on.spark.yarn.submit.file.replication: The default HDFS replication (usually 3) HDFS replication level for the files uploaded into HDFS for the application. These include things like the Spark jar, the app jar, and any distributed cache files/archives. spark.yarn.stagingDir: Current user's home directory in the filesystemWith the --files option you put the file in your working directory on the executor. You are trying to point to the file using an absolute path which is not what files option does for you. Can you use just the name "rule2.xml" and not a path. When you read the documentation for the files. See the important note at the bottom of the page running ...I want to store the Spark arguments such as input file, output file into a Java property files and pass that file into Spark Driver. I'm using spark-submit for submitting the job but couldn't find a parameter to pass the properties file.Oct 16, 2017 · Spark-submit can't locate local file. Ask Question Asked 5 years, 10 months ago. Modified 5 years, 10 months ago. Viewed 8k times 2 I've written a very simple python ... Aug 1, 2023 · Spark-Submit Compatibility. You can use spark-submit compatible options to run your applications using Data Flow. Spark-submit is an industry standard command for running applications on Spark clusters. The following spark-submit compatible options are supported by Data Flow: --conf. --files. --py-files. --jars. For the 5th process I am using a spark-submit command as this process needs to leverage spark because of the size of the data being processed. I am running into issues with JDBC and Kerberos Authnetication with the spark-submit command. The Oracle @Configuration is the same for all of these processes. It works fine and authenticates fine with a ...Spark on Kubernetes doesn't support submitting locally stored files with spark-submit.rdd = sc.textFile ("file:///path/to/file") If your file isn’t already on all nodes in the cluster, you can load it locally on the driver without going through Spark and then call parallelize to distribute the contents to workers. Take care to put file:// in front and the use of "/" or "\" according to OS. Share.Jun 23, 2020 · Pass system property to spark-submit and read file from classpath or custom path. 2 adding external property file to classpath in spark. 0 ... using the --files option to copy a text file "foo.txt" (which is located in the project root) from the "submitting" Windows machine (which is also running Spark 1.6.0 and Scala 2.10.5) to the working directories of executors (as described by spark-submit -h) passing the textfile as first argument to my application1. --files comma-separated files list. Comma-separated list of files that are deposited in the working directory of each and every Executor using YARN Cluster Mode if memory serves correctly. Use case is (although never used myself) is configuration info that you can read in as opposed to using args [x] approach. Share. command options. You specify spark-submit options using the form --option value instead of --option=value . (Use a space instead of an equals sign.) Option. Description. class. For Java and Scala applications, the fully qualified classname of the class containing the main method of the application. For example, org.apache.spark.examples.SparkPi.Mar 1, 2019 · I have a Java-spark code that reads certain properties files. These properties are being passed with spark-submit like: spark-submit --master yarn \\ --deploy-mode cluster \\ --files /home/aiman/ For Python, you can use the --py-files argument of spark-submit to add .py, .zip or .egg files to be distributed with your application. If you depend on multiple Python files we recommend packaging them into a .zip or .egg. Launching Applications with spark-submit. Once a user application is bundled, it can be launched using the bin/spark ... 1. I have a SPARK cluster with Yarn, and I want to put my job's jar into a S3 100% compatible Object Store. If I want to submit the job, I search from google and seems that just simply as this way: spark-submit --master yarn --deploy-mode cluster <...other parameters...> s3://my_ bucket/jar_file However the S3 Object Store required user name ...To do so, specify the spark properties spark.kubernetes.driver.podTemplateFile and spark.kubernetes.executor.podTemplateFile to point to local files accessible to the spark-submit process. To allow the driver pod access the executor pod template file, the file will be automatically mounted onto a volume in the driver pod when it’s created.The most basic steps to configure the key stores and the trust store for a Spark Standalone deployment mode is as follows: Generate a key pair for each node. Export the public key of the key pair to a file on each node. Import all exported public keys into a single trust store.You can pass the arguments from the spark-submit command and then access them in your code in the following way, sys.argv[1] will get you the first argument, sys.argv[2] the second argument and so on.1. I am using spark 2.4.1 version and java8. I am trying to load external property file while submitting my spark job using spark-submit. As I am using below TypeSafe to load my property file. <groupId>com.typesafe</groupId> <artifactId>config</artifactId> <version>1.3.1</version>. In my code I am using.using the --files option to copy a text file "foo.txt" (which is located in the project root) from the "submitting" Windows machine (which is also running Spark 1.6.0 and Scala 2.10.5) to the working directories of executors (as described by spark-submit -h) passing the textfile as first argument to my applicationThe spark-submit command is a utility to run or submit a Spark or PySpark application program (or job) to the cluster by specifying options and configurations, the application you are submitting can be written in Scala, Java, or Python (PySpark). spark-submit command supports the following.

--py-files PY_FILES Comma-separated list of .zip, .egg, or .py files to place on the PYTHONPATH for Python apps. So your command will look as follow spark-submit --master local --driver-memory 2g --executor-memory 2g --py-files s3_path\file2.py,s3_path\file3.py,s3_path\file4.py s3_path\file1.py. Atandt directv payment number

spark submit files

1. --files comma-separated files list. Comma-separated list of files that are deposited in the working directory of each and every Executor using YARN Cluster Mode if memory serves correctly. Use case is (although never used myself) is configuration info that you can read in as opposed to using args [x] approach. Share. Dec 8, 2017 · This is a JSON protocol to submit Spark application, to submit Spark application to cluster manager, we should use HTTP POST request to send above JSON protocol to Livy Server: curl -H "Content-Type: application/json" -X POST -d ‘<JSON Protocol>’ <livy-host>:<port>/batches. As you can see most of the arguments are the same, but there still ... Dec 8, 2017 · This is a JSON protocol to submit Spark application, to submit Spark application to cluster manager, we should use HTTP POST request to send above JSON protocol to Livy Server: curl -H "Content-Type: application/json" -X POST -d ‘<JSON Protocol>’ <livy-host>:<port>/batches. As you can see most of the arguments are the same, but there still ... On Kubernetes I'm having an issue: files uploaded via --files can't be read by Spark Driver. On Yarn, as described in many answers I can read those files using Source.fromFile(filename) . But I can't read files in Spark on Kubernetes.2. In my Spark job I read some additional data from resources files. Some example Resources.getResource ("/more-data") It works great locally, and when I run from spark-submit master=local [*] I only to need to add --conf=spark.driver.extraClassPath=moredata. Moving to cluster mode (Yarn) it is no longer able to find the folder.Spark Python Application – Example. Apache Spark provides APIs for many popular programming languages. Python is on of them. One can write a python script for Apache Spark and run it using spark-submit command line interface.But configuration file is imported in some other python file that is not entry point for spark application . I want to write spark submit command in pyspark , but I am not sure how to provide multiple files along configuration file with spark submit command when configuration file is not python file but text file or ini file. 0. spark-submit is a utility to submit your spark program (or job) to Spark clusters. If you open the spark-submit utility, it eventually calls a Scala program. org.apache.spark.deploy.SparkSubmit. On the other hand, pyspark or spark-shell is REPL ( read–eval–print loop) utility which allows the developer to run/execute their spark code as ...3 Answers. No, spark-submit --files option doesn't support sending folder, but you can put all your files in a zip, use that file in --files list. You can use SparkFiles.get (filename) in your spark job to load the file, explode it and use exploded files. 'filename' doesn't need to be absolute path, just filename does it.command options. You specify spark-submit options using the form --option value instead of --option=value . (Use a space instead of an equals sign.) Option. Description. class. For Java and Scala applications, the fully qualified classname of the class containing the main method of the application. For example, org.apache.spark.examples.SparkPi. Nov 9, 2017 · As suspected, the two options ( sc.addFile and --files) are not equivalent, and this is (admittedly very subtly) hinted at the documentation (emphasis added): addFile (path, recursive=False) Add a file to be downloaded with this Spark job on every node. --files FILES. Comma-separated list of files to be placed in the working directory of each ... rdd = sc.textFile ("file:///path/to/file") If your file isn’t already on all nodes in the cluster, you can load it locally on the driver without going through Spark and then call parallelize to distribute the contents to workers. Take care to put file:// in front and the use of "/" or "\" according to OS. Share.0. spark-submit is a utility to submit your spark program (or job) to Spark clusters. If you open the spark-submit utility, it eventually calls a Scala program. org.apache.spark.deploy.SparkSubmit. On the other hand, pyspark or spark-shell is REPL ( read–eval–print loop) utility which allows the developer to run/execute their spark code as ...As with the Scala and Java examples, we use a SparkSession to create Datasets. For applications that use custom classes or third-party libraries, we can also add code dependencies to spark-submit through its --py-files argument by packaging them into a .zip file (see spark-submit --help for details).Mar 23, 2017 · I am currently running spark 2.1.0. I have worked most of the time in PYSPARK shell, but I need to spark-submit a python file(similar to spark-submit jar in java) . Teams. Q&A for work. Connect and share knowledge within a single location that is structured and easy to search. Learn more about TeamsWe are using Spark 2.3.0 on Yarn in pseudo distributed mode. We need to query a postgres table from spark whose configurations are defined in a properties file. I passed the property file using --files attribute of spark submit. To read the file in my code I simply used java.util.Properties.PropertiesReader class. .

Popular Topics