Spark submit files - 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.

 
The spark-submit script in Spark’s bin directory is used to launch applications on a cluster. It can use all of Spark’s supported cluster managers through a uniform interface so you don’t have to configure your application specially for each one. Bundling Your Application’s Dependencies . Casting couch hd

The Spark shell and spark-submit tool support two ways to load configurations dynamically. The first are command line options, such as --master, as shown above. spark-submit can accept any Spark property using the --conf flag, but uses special flags for properties that play a part in launching the Spark application.Apr 15, 2020 · 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 ... Using PySpark Native Features ¶. PySpark allows to upload Python files ( .py ), zipped Python packages ( .zip ), and Egg files ( .egg ) to the executors by one of the following: Setting the configuration setting spark.submit.pyFiles. Setting --py-files option in Spark scripts. Directly calling pyspark.SparkContext.addPyFile () in applications.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 ... Apr 15, 2020 · 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 ... Now that I am trying to run this on a cluster, I think I need to use spark-submit, to which I thought would be: spark-submit --conf spark.neo4j.bolt.password=Stuffffit --packages neo4j-contrib:neo4j-spark-connector:2.0.0-M2,graphframes:graphframes:0.2.0-spark2.0-s_2.11 -i neo4jsparkCluster.scala but it does not like the .scala file, somehow ...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.For deploy-mode cluster. As previous answers mentioned, if you want to pass env variable to spark master, you want to use: --conf spark.yarn.appMasterEnv.FOO=bar // pass bar value to FOO variable --conf spark.yarn.appMasterEnv.FOO=$ {FOO} // passing current FOO env variable --conf spark.yarn.appMasterEnv.FOO2=bar2 // multiple variables are ... 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 ... Using PySpark Native Features ¶. PySpark allows to upload Python files ( .py ), zipped Python packages ( .zip ), and Egg files ( .egg ) to the executors by one of the following: Setting the configuration setting spark.submit.pyFiles. Setting --py-files option in Spark scripts. Directly calling pyspark.SparkContext.addPyFile () in applications.So, I am trying to redirect the output of an apache spark-submit command to text file but some output fails to populate file. Here is the command I am using: spark-submit something.py > results.txt I can see the output in the terminal but I do not see it in the file. What am I forgetting or doing wrong here? Edit: If I useWhen 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 ... 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. spark.kubernetes.file.upload.path must be a path on a distributed/shared file system (HDFS/S3/NAS/etc.). The spark-submit process uploads the files to that path, and the driver and executors will try to download it from there. Looks like you are referencing some local /tmp folder.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 filesystem1 You could put the file on a network mount that is accessible by all the nodes on the cluster. This way you can just read from that mount in your driver program. You could expose a simple endpoint that returns the file. This way your driver program can make an http call. – Alex Naspo Jan 20, 2016 at 20:39 True enough, @AlexNaspo, but redundant. 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.Teams. Q&A for work. Connect and share knowledge within a single location that is structured and easy to search. Learn more about TeamsMar 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) . Mar 16, 2017 · spark-submit --class Eventhub --master yarn --deploy-mode cluster --executor-memory 1024m --executor-cores 4 --files app.conf spark-hdfs-assembly-1.0.jar --conf "app.conf" I was looking a way to put all these flags in file to pass to spark-submit to make my spark-submit command simple liek this 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 resource0. 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 ...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:The easiest way to set some config: spark.conf.set ("spark.sql.shuffle.partitions", 500). Where spark refers to a SparkSession, that way you can set configs at runtime. It's really useful when you want to change configs again and again to tune some spark parameters for specific queries. Share.With 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 ...Sep 25, 2015 · With 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 ... The 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. 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.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. 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 ... For Python, you can use the --py-files argument of spark-submit to add .py, .zip or .egg ...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 ...Using PySpark Native Features ¶. PySpark allows to upload Python files ( .py ), zipped Python packages ( .zip ), and Egg files ( .egg ) to the executors by one of the following: Setting the configuration setting spark.submit.pyFiles. Setting --py-files option in Spark scripts. Directly calling pyspark.SparkContext.addPyFile () in applications. 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 filesystemThe 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. For deploy-mode cluster. As previous answers mentioned, if you want to pass env variable to spark master, you want to use: --conf spark.yarn.appMasterEnv.FOO=bar // pass bar value to FOO variable --conf spark.yarn.appMasterEnv.FOO=$ {FOO} // passing current FOO env variable --conf spark.yarn.appMasterEnv.FOO2=bar2 // multiple variables are ... 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 ...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. 4.7 Answers. Yes, you can access files uploaded via the --files argument. ./bin/spark-submit \ --class com.MyClass \ --master yarn-cluster \ --files /path/to/some/file.ext \ --jars lib/datanucleus-api-jdo-3.2.6.jar,lib/datanucleus-rdbms-3.2.9.jar,lib/datanucleus-core-3.2.10.jar \ /path/to/app.jar file.ext.May 5, 2016 · I have a CSV file "test.csv" that I'm trying to have copied to all nodes on the cluster. I have a 4 node apache-spark 1.5.2 standalone cluster. There are 4 workers where one node also acts has mas... 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. Setting the spark-submit flags is one of the ways to dynamically supply configurations to the SparkContext object that is instantiated in the driver. spark-submit can also read configuration values set in the conf/spark-defaults.conf file which you can set using EMR configuration options when creating your cluster and, although not recommended, ...Using addPyFiles() seems to not be adding desiered files to spark job nodes (new to spark so may be missing some basic usage knowledge here). Attempting to run a script using pyspark and was seeing errors that certain modules are not found for import.Mar 26, 2017 · The easiest way to set some config: spark.conf.set ("spark.sql.shuffle.partitions", 500). Where spark refers to a SparkSession, that way you can set configs at runtime. It's really useful when you want to change configs again and again to tune some spark parameters for specific queries. Share. 1 You could put the file on a network mount that is accessible by all the nodes on the cluster. This way you can just read from that mount in your driver program. You could expose a simple endpoint that returns the file. This way your driver program can make an http call. – Alex Naspo Jan 20, 2016 at 20:39 True enough, @AlexNaspo, but redundant. 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 on Kubernetes doesn't support submitting locally stored files with spark-submit.Dec 18, 2020 · With Spark 3.4, spark.files, spark.jars, and spark.pyfiles all are placed in the current working directory of Driver & Executor while using K8s resource manager. With 3.5 all these will be available on classpath as well. 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.Using PySpark Native Features ¶. PySpark allows to upload Python files ( .py ), zipped Python packages ( .zip ), and Egg files ( .egg ) to the executors by one of the following: Setting the configuration setting spark.submit.pyFiles. Setting --py-files option in Spark scripts. Directly calling pyspark.SparkContext.addPyFile () in applications. 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.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: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 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 ...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.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 ...Nov 26, 2018 · spark-submit --master yarn --jars <comma-separated-jars> --conf <spark-properties> --name <job_name> <python_file> <argument 1> <argument 2> eg: spark-submit --master yarn --jars example.jar --conf spark.executor.instances=10 --name example_job example.py arg1 arg2 For mnistOnSpark.py you should pass arguments as mentioned in the command above ... 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 ... Dec 18, 2020 · With Spark 3.4, spark.files, spark.jars, and spark.pyfiles all are placed in the current working directory of Driver & Executor while using K8s resource manager. With 3.5 all these will be available on classpath as well. I have a CSV file "test.csv" that I'm trying to have copied to all nodes on the cluster. I have a 4 node apache-spark 1.5.2 standalone cluster.With 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 ...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.Oct 23, 2020 · Yeah I added another parameter. It was Spark-submit --py-files wheelfile driver.py This driver was calling the function inside wheelfile. But then this driver and wheel are in same location essentially. What is the use of wheel then? Because if I run the command with spark-submit driver.py . Then also its the same Right?? – Sep 25, 2015 · With 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 ... 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 ...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 ...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).Nov 4, 2014 · 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 ... 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:The spark-submit script in Spark’s bin directory is used to launch applications on a cluster. It can use all of Spark’s supported cluster managers through a uniform interface so you don’t have to configure your application especially for each one. Bundling Your Application’s Dependencies 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. 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 ...The 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. 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 ...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.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 ...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 ...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 ... Referencing here and here, I expect that I should be able to change the name by which a file is referenced in Spark by using an octothorpe - that is, if I call spark-submit --files local-file-name.json#spark-file-name.json, I should then be able to reference the file as spark-file-name.json. However, this doesn't appear to be the case:The Spark shell and spark-submit tool support two ways to load configurations dynamically. The first are command line options, such as --master, as shown above. spark-submit can accept any Spark property using the --conf flag, but uses special flags for properties that play a part in launching the Spark application.May 12, 2020 · Spark on Kubernetes doesn't support submitting locally stored files with spark-submit. 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.Submit Spark workload by submitting Spark batch applications by using the cluster management console, RESTful APIs, or the CLI. A Spark batch application is launched by only the spark-submit command from the following ways: cluster management console (immediately or by scheduling the submission). ascd Spark application RESTful APIs.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:Nov 4, 2014 · 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 ... 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 ...

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 .... Referenzen

spark submit files

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 ... 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:The Spark shell and spark-submit tool support two ways to load configurations dynamically. The first are command line options, such as --master, as shown above. spark-submit can accept any Spark property using the --conf flag, but uses special flags for properties that play a part in launching the Spark application. 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.Oct 23, 2020 · Yeah I added another parameter. It was Spark-submit --py-files wheelfile driver.py This driver was calling the function inside wheelfile. But then this driver and wheel are in same location essentially. What is the use of wheel then? Because if I run the command with spark-submit driver.py . Then also its the same Right?? – 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 ...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 ...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. 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.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.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 ...Jul 2, 2020 · I have a pyspark code stored both on the master node of an AWS EMR cluster and in an s3 bucket that fetches over 140M rows from a MySQL database and stores the sum of a column back in the log files on s3. When I spark-submit the pyspark code on the master node, the job gets completed successfully and the output is stored in the log files on the ... 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 ...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 ....

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