org.apache.spark.SparkException: Job aborted due to stage failure: Task 7 in stage 0.0 failed 4 times, most recent failure: Lost task 7.3 in stage 0.0 (TID 11, fujitsu11.inevm.ru):java.lang.ClassNotFoundException: maven.maven1.Document java.net.URLClassLoader$1.run (URLClassLoader.java:366) java.net.URLClassLoader$1.run (URLClassLoader.java:35...Feb 8, 2021 · The text was updated successfully, but these errors were encountered: Stack Overflow Public questions & answers; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Talent Build your employer brandCreate cluster with spark memory settings that change the ratio of memory to CPU: gcloud dataproc clusters create --properties spark:spark.executor.cores=1 for example will change each executor to only run one task at a time with the same amount of memory, whereas Dataproc normally runs 2 executors per machine and divides CPUs accordingly. On 4 ...Jan 24, 2022 · We use databricks runtime 7.3 with scala 2.12 and spark 3.0.1. In our jobs we first DROP the Table and delete the associated delta files which are stored on an azure storage account like so: DROP TABLE IF EXISTS db.TableName dbutils.fs.rm(pathToTable, recurse=True) org.apache.spark.SparkException: Job aborted due to stage failure: Task 7 in stage 0.0 failed 4 times, most recent failure: Lost task 7.3 in stage 0.0 (TID 11, fujitsu11.inevm.ru):java.lang.ClassNotFoundException: maven.maven1.Document java.net.URLClassLoader$1.run (URLClassLoader.java:366) java.net.URLClassLoader$1.run (URLClassLoader.java:35...An Azure analytics service that brings together data integration, enterprise data warehousing, and big data analytics. Previously known as Azure SQL Data Warehouse.Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question.Provide details and share your research! But avoid …. Asking for help, clarification, or responding to other answers.Jul 5, 2017 · @Hugo Felix. Thank you for sharing the tutorial. I was able to replicate the issue and I found the issue to be with incompatible jars. I am using the following precise versions that I pass to spark-shell. You can do either of the below to solve this problem. set spark configuration spark.sql.files.ignoreMissingFiles to true. run fsck repair table tablename on your underlying delta table (run fsck repair table tablename DRY RUN first to see the files) Share. Improve this answer. Follow. answered Dec 22, 2022 at 15:16.Caused by: org.apache.spark.SparkException: Exception thrown in awaitResult: at org.apache.spark.util.ThreadUtils$.awaitResultInForkJoinSafely (ThreadUtils.scala:215) at org.apache.spark.sql.execution.exchange.BroadcastExchangeExec.doExecuteBroadcast (BroadcastExchangeExec.scala:131)I ran into the same problem when I tried to join two DataFrames where one of them was GroupedData. It worked for me when I cached the GroupedData DataFrame before the inner join.1 Answer. Sorted by: 1. You need to create an RDD of type RDD [Tuple [str]] but in your code, the line: rdd = spark.sparkContext.parallelize (comments) returns RDD [str] which then fails when you try to convert it to dataframe with that given schema. Try modifying that line to:这样再用这16个TPs取分别执行其 c.seekToEnd (TP)时,遇到这8个已经分配到consumer-B的TPs,就会抛此异常; 个人理解: 这个实现应是Spark-Streaming-Kafak这个框架的要求,即每个Spark-kafak任务, consumerGroup必须是专属 (唯一的); 相关原理和源码. DirectKafkaInputDStream.latestOffsets(){ val parts ...Feb 4, 2019 · I have Spark 2.3.1 running on my local windows 10 machine. I haven't tinkered around with any settings in the spark-env or spark-defaults.As I'm trying to connect to spark using spark-shell, I get a failed to connect to master localhost:7077 warning. Nov 7, 2017 · org.apache.spark.SparkException: **Job aborted due to stage failure: Task 0 in stage 1.0 failed 1 times, most recent failure: Lost task 0.0 in stage 1.0 (TID 1 ... Jul 5, 2017 · @Hugo Felix. Thank you for sharing the tutorial. I was able to replicate the issue and I found the issue to be with incompatible jars. I am using the following precise versions that I pass to spark-shell. May 3, 2021 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question.Provide details and share your research! But avoid …. Asking for help, clarification, or responding to other answers. Yarn throws the following exception in cluster mode when the application is really small: Here is a method to parallelize serial JDBC reads across multiple spark workers... you can use this as a guide to customize it to your source data ... basically the main prerequisite is to have some kind of unique key to split on.Converting a dataframe to Panda data frame using toPandas() fails. Spark 3.0.0 Running in stand-alone mode using docker containers based on jupyter docker stack here: ... Yes, this solved my problem. I was using spark-submit --deploy-mode cluster, but when I changed it to client, it worked fine. In my case, I was executing SQL scripts using a python code, so my code was not "spark dependent", but I am not sure what will be the implications of doing this when you want multiprocessing. –My program runs fine in client mode ,but when I try to run in cluster mode if fails ,the reason for that is the python version on the cluster nodes is different I am trying to set the python driver...I have 2 data frames one with 10K rows and 10,000 columns and another with 4M rows with 50 columns. I joined this and trying to find mean of merged data set, Jan 28, 2019 · My first reaction would be to forget about it as you're running your Spark app in sbt so there could be a timing issue between threads of the driver and the executors. Unless you show what led to Nonzero exit code: 1, there's nothing I'd worry about. – Jacek Laskowski. Jan 28, 2019 at 18:07. Ok thanks but my app don't read a file like that. Jan 28, 2019 · My first reaction would be to forget about it as you're running your Spark app in sbt so there could be a timing issue between threads of the driver and the executors. Unless you show what led to Nonzero exit code: 1, there's nothing I'd worry about. – Jacek Laskowski. Jan 28, 2019 at 18:07. Ok thanks but my app don't read a file like that. Mar 20, 2023 · Caused by: org.apache.spark.SparkException: Exception thrown in awaitResult: at org.apache.spark.util.ThreadUtils$.awaitResult(ThreadUtils.scala:226) at org.apache.spark.sql.execution.exchange.BroadcastExchangeExec.doExecuteBroadcast(BroadcastExchangeExec.scala:146) at org.apache.spark.sql.execution.InputAdapter.doExecuteBroadcast ... Nov 24, 2021 · An Azure analytics service that brings together data integration, enterprise data warehousing, and big data analytics. Previously known as Azure SQL Data Warehouse. Mar 29, 2018 · 解决方案：. 先telnet 10.45.66.176:7077是否能连通？. 检查在master主机检查7077端口属于什么IP，eg. 如下的7077端口则属于127.0.0.1，需要将其修改成其他主机能访问的ip；. image.png. 修改/etc/hosts文件即可，如下：. 127.0.0.1 iotsparkmaster localhost localhost.localdomain localhost4 localhost4 ... Pyarrow 4.0.1. Jupyter notebook. Spark cluster on GCS. When I try to enable Pyarrow optimization like this: spark.conf.set ('spark.sql.execution.arrow.enabled', 'true') I get the following warning: createDataFrame attempted Arrow optimization because 'spark.sql.execution.arrow.enabled' is set to true; however failed by the reason below ...Here are some ideas to fix this error: Serializable the class. Declare the instance only within the lambda function passed in map. Make the NotSerializable object as a static and create it once per machine. Call rdd.forEachPartition and create the NotSerializable object in there like this: rdd.forEachPartition (iter -> { NotSerializable ...Feb 8, 2021 · The text was updated successfully, but these errors were encountered: Caused by: org.apache.spark.SparkException: Exception thrown in awaitResult: Caused by: org.apache.spark.SparkException: Job aborted due to stage failure: Task 0 in ...Feb 4, 2019 · I have Spark 2.3.1 running on my local windows 10 machine. I haven't tinkered around with any settings in the spark-env or spark-defaults.As I'm trying to connect to spark using spark-shell, I get a failed to connect to master localhost:7077 warning. org.apache.spark.SparkException: Job aborted due to stage failure: Hot Network Questions How to draw 3 equal circles inside a circle in tikz or other way?它提供了低级别、轻量级、高保真度的2D渲染。. 该框架可以用于基于路径的绘图、变换、颜色管理、脱屏渲染，模板、渐变、遮蔽、图像数据管理、图像的创建、遮罩以及PDF文档的创建、显示和分析等。. 为了从感官上对这些概念做一个入门的认识，你可以运行 ... Mar 20, 2023 · Caused by: org.apache.spark.SparkException: Exception thrown in awaitResult: at org.apache.spark.util.ThreadUtils$.awaitResult(ThreadUtils.scala:226) at org.apache.spark.sql.execution.exchange.BroadcastExchangeExec.doExecuteBroadcast(BroadcastExchangeExec.scala:146) at org.apache.spark.sql.execution.InputAdapter.doExecuteBroadcast ... Mar 28, 2020 · I am trying to setup hadoop 3.1.2 with spark in windows. i have started hdfs cluster and i am able to create,copy files in hdfs. When i try to start spark-shell with yarn i am facing ERROR cluster. I'm new to Spark and I'm using Pyspark 2.3.1 to read in a csv file into a dataframe. I'm able to read in the file and print values in a Jupyter notebook running within an anaconda environment. This...Jun 9, 2017 · 3. I am very new to Apache Spark and trying to run spark on my local machine. First I tried to start the master using the following command: ./sbin/start-master.sh. Which got successfully started. And then I tried to start the worker using. ./bin/spark-class org.apache.spark.deploy.worker.Worker spark://localhost:7077 -c 1 -m 512M. Spark and Java: Exception thrown in awaitResult Ask Question Asked 6 years, 10 months ago Modified 1 year, 2 months ago Viewed 64k times 16 I am trying to connect a Spark cluster running within a virtual machine with IP 10.20.30.50 and port 7077 from within a Java application and run the word count example:May 3, 2021 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question.Provide details and share your research! But avoid …. Asking for help, clarification, or responding to other answers. org.apache.spark.SparkException: Exception thrown in awaitResult Use the below points to fix this - Check the Spark version used in the project - especially if it involves a Cluster of nodes (Master , Slave). The Spark version which is running in the Slave nodes should be same as the Spark version dependency used in the Jar compilation. Apr 23, 2020 · 2 Answers. df.toPandas () collects all data to the driver node, hence it is very expensive operation. Also there is a spark property called maxResultSize. spark.driver.maxResultSize (default 1G) --> Limit of total size of serialized results of all partitions for each Spark action (e.g. collect) in bytes. Should be at least 1M, or 0 for unlimited. Hi! I run 2 to spark an option SPARK_MAJOR_VERSION=2 pyspark --master yarn --verbose spark starts, I run the SC and get an error, the field in the table exactly there. not the problem SPARK_MAJOR_VERSION=2 pyspark --master yarn --verbose SPARK_MAJOR_VERSION is set to 2, using Spark2 Python 2.7.12 ...Check the Availability of Free RAM - whether it matches the expectation of the job being executed. Run below on each of the servers in the cluster and check how much RAM & Space they have in offer. free -h. If you are using any HDFS files in the Spark job , make sure to Specify & Correctly use the HDFS URL. Jan 28, 2019 · My first reaction would be to forget about it as you're running your Spark app in sbt so there could be a timing issue between threads of the driver and the executors. Unless you show what led to Nonzero exit code: 1, there's nothing I'd worry about. – Jacek Laskowski. Jan 28, 2019 at 18:07. Ok thanks but my app don't read a file like that. Hi there, Just wanted to check - was the above suggestion helpful to you? If yes, please consider upvoting and/or marking it as answer. This would help other community members reading this thread.Nov 3, 2021 · Check the YARN application logs for more details. 21/11/03 15:52:35 ERROR YarnClientSchedulerBackend: Diagnostics message: Uncaught exception: org.apache.spark.SparkException: Exception thrown in awaitResult: at org.apache.spark.util.ThreadUtils$.awaitResult(ThreadUtils.scala:226) at org.apache.spark.rpc.RpcTimeout.awaitResult(RpcTimeout.scala ... Apr 23, 2020 · 2 Answers. df.toPandas () collects all data to the driver node, hence it is very expensive operation. Also there is a spark property called maxResultSize. spark.driver.maxResultSize (default 1G) --> Limit of total size of serialized results of all partitions for each Spark action (e.g. collect) in bytes. Should be at least 1M, or 0 for unlimited. Jun 20, 2019 · Here is a method to parallelize serial JDBC reads across multiple spark workers... you can use this as a guide to customize it to your source data ... basically the main prerequisite is to have some kind of unique key to split on. Converting a dataframe to Panda data frame using toPandas() fails. Spark 3.0.0 Running in stand-alone mode using docker containers based on jupyter docker stack here: ...Feb 8, 2021 · The text was updated successfully, but these errors were encountered: Spark and Java: Exception thrown in awaitResult Ask Question Asked 6 years, 10 months ago Modified 1 year, 2 months ago Viewed 64k times 16 I am trying to connect a Spark cluster running within a virtual machine with IP 10.20.30.50 and port 7077 from within a Java application and run the word count example:Invalidates the cached entries for Apache Spark cache, which include data and metadata of the given table or view. The invalidated cache is populated in lazy manner when the cached table or the query associated with it is executed again. REFRESH [TABLE] table_name Manually restart the cluster.An Azure analytics service that brings together data integration, enterprise data warehousing, and big data analytics. Previously known as Azure SQL Data Warehouse.My program runs fine in client mode ,but when I try to run in cluster mode if fails ,the reason for that is the python version on the cluster nodes is different I am trying to set the python driver...Hi! I run 2 to spark an option SPARK_MAJOR_VERSION=2 pyspark --master yarn --verbose spark starts, I run the SC and get an error, the field in the table exactly there. not the problem SPARK_MAJOR_VERSION=2 pyspark --master yarn --verbose SPARK_MAJOR_VERSION is set to 2, using Spark2 Python 2.7.12 ...In the traceback it says: Caused by: org.apache.spark.SparkException: Job aborted due to stage failure: Task 0 in stage 43.0 failed 1 times, most recent failure: Lost task 0.0 in stage 43.0 (TID 97) (ip-10-172-188- 62.us-west-2.compute.internal executor driver): java.lang.OutOfMemoryError: Java heap spaceNov 28, 2017 · I am new to spark and have been trying to run my first java spark job through a standalone local master. Now my master is up and one worker gets registered as well, but when run below spark program I got org.apache.spark.SparkException: Exception thrown in awaitResult. My program should work as it runs fine when master is set to local. My Spark ... Teams. Q&A for work. Connect and share knowledge within a single location that is structured and easy to search. Learn more about TeamsYou can do either of the below to solve this problem. set spark configuration spark.sql.files.ignoreMissingFiles to true. run fsck repair table tablename on your underlying delta table (run fsck repair table tablename DRY RUN first to see the files) Share. Improve this answer. Follow. answered Dec 22, 2022 at 15:16.Aug 28, 2018 · Pyarrow 4.0.1. Jupyter notebook. Spark cluster on GCS. When I try to enable Pyarrow optimization like this: spark.conf.set ('spark.sql.execution.arrow.enabled', 'true') I get the following warning: createDataFrame attempted Arrow optimization because 'spark.sql.execution.arrow.enabled' is set to true; however failed by the reason below ... Here are some ideas to fix this error: Serializable the class. Declare the instance only within the lambda function passed in map. Make the NotSerializable object as a static and create it once per machine. Call rdd.forEachPartition and create the NotSerializable object in there like this: rdd.forEachPartition (iter -> { NotSerializable ...I have a spark set up in AWS EMR. Spark version is 2.3.1. I have one master node and two worker nodes. I am using sparklyr to run xgboost model for a classification problem. My job ran for over six...Sep 27, 2019 · 2. Caused by: org.apache.spark.SparkException: Exception thrown in awaitResult: The default spark.sql.broadcastTimeout is 300 Timeout in seconds for the broadcast wait time in broadcast joins. To overcome this problem increase the timeout time as per required example--conf "spark.sql.broadcastTimeout= 1200" 3. “org.apache.spark.rpc ... However, after running for a couple of days in production, the spark application faces some network hiccups from S3 that causes an exception to be thrown and stops the application. It's also worth mentioning that this application runs on Kubernetes using GCP's Spark k8s Operator . Sep 26, 2017 · I'm deploying a Spark Apache application using standalone cluster manager. My architecture uses 2 Windows machines: one set as a master, and another set as a slave (worker). Master: on which I run: \bin>spark-class org.apache.spark.deploy.master.Master and this is what the web UI shows: In the traceback it says: Caused by: org.apache.spark.SparkException: Job aborted due to stage failure: Task 0 in stage 43.0 failed 1 times, most recent failure: Lost task 0.0 in stage 43.0 (TID 97) (ip-10-172-188- 62.us-west-2.compute.internal executor driver): java.lang.OutOfMemoryError: Java heap spaceJul 5, 2018 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question.Provide details and share your research! But avoid …. Asking for help, clarification, or responding to other answers. Jan 24, 2022 · We use databricks runtime 7.3 with scala 2.12 and spark 3.0.1. In our jobs we first DROP the Table and delete the associated delta files which are stored on an azure storage account like so: DROP TABLE IF EXISTS db.TableName dbutils.fs.rm(pathToTable, recurse=True) calling o110726.collectToPython. : org.apache.spark.SparkException: Job aborted due to stage failure: Task 7 in stage 1971.0 failed 4 times, most recent failure: Lost task 7.3 in stage 1971.0 (TID 31298) (10.54.144.30 executor 7):Jan 24, 2022 · We use databricks runtime 7.3 with scala 2.12 and spark 3.0.1. In our jobs we first DROP the Table and delete the associated delta files which are stored on an azure storage account like so: DROP TABLE IF EXISTS db.TableName dbutils.fs.rm(pathToTable, recurse=True) Converting a dataframe to Panda data frame using toPandas() fails. Spark 3.0.0 Running in stand-alone mode using docker containers based on jupyter docker stack here: ...Yes, this solved my problem. I was using spark-submit --deploy-mode cluster, but when I changed it to client, it worked fine. In my case, I was executing SQL scripts using a python code, so my code was not "spark dependent", but I am not sure what will be the implications of doing this when you want multiprocessing. –Mar 30, 2018 · Currently it is a hard limit in spark that the broadcast variable size should be less than 8GB. See here.. The 8GB size is generally big enough. If you consider that you re running a job with 100 executors, spark driver needs to send the 8GB data to 100 Nodes resulting 800GB network traffic. Spark报错处理. 1、 问题： org.apache.spark.SparkException: Exception thrown in awaitResult 分析：出现这个情况的原因是spark启动的时候设置的是hostname启动的，导致访问的时候DNS不能解析主机名导致。Sep 27, 2019 · 2. Caused by: org.apache.spark.SparkException: Exception thrown in awaitResult: The default spark.sql.broadcastTimeout is 300 Timeout in seconds for the broadcast wait time in broadcast joins. To overcome this problem increase the timeout time as per required example--conf "spark.sql.broadcastTimeout= 1200" 3. “org.apache.spark.rpc ... Mar 20, 2023 · Caused by: org.apache.spark.SparkException: Exception thrown in awaitResult: at org.apache.spark.util.ThreadUtils$.awaitResult(ThreadUtils.scala:226) at org.apache.spark.sql.execution.exchange.BroadcastExchangeExec.doExecuteBroadcast(BroadcastExchangeExec.scala:146) at org.apache.spark.sql.execution.InputAdapter.doExecuteBroadcast ... Invalidates the cached entries for Apache Spark cache, which include data and metadata of the given table or view. The invalidated cache is populated in lazy manner when the cached table or the query associated with it is executed again. REFRESH [TABLE] table_name Manually restart the cluster.Nov 3, 2021 · Check the YARN application logs for more details. 21/11/03 15:52:35 ERROR YarnClientSchedulerBackend: Diagnostics message: Uncaught exception: org.apache.spark.SparkException: Exception thrown in awaitResult: at org.apache.spark.util.ThreadUtils$.awaitResult(ThreadUtils.scala:226) at org.apache.spark.rpc.RpcTimeout.awaitResult(RpcTimeout.scala ... Jan 28, 2019 · My first reaction would be to forget about it as you're running your Spark app in sbt so there could be a timing issue between threads of the driver and the executors. Unless you show what led to Nonzero exit code: 1, there's nothing I'd worry about. – Jacek Laskowski. Jan 28, 2019 at 18:07. Ok thanks but my app don't read a file like that. org.apache.spark.SparkException: Exception thrown in awaitResult Use the below points to fix this - Check the Spark version used in the project - especially if it involves a Cluster of nodes (Master , Slave). The Spark version which is running in the Slave nodes should be same as the Spark version dependency used in the Jar compilation.Here is a method to parallelize serial JDBC reads across multiple spark workers... you can use this as a guide to customize it to your source data ... basically the main prerequisite is to have some kind of unique key to split on.Jul 18, 2020 · I am trying to run a pyspark program by using spark-submit: from pyspark import SparkConf, SparkContext from pyspark.sql import SQLContext from pyspark.sql.types import * from pyspark.sql import Yes, this solved my problem. I was using spark-submit --deploy-mode cluster, but when I changed it to client, it worked fine. In my case, I was executing SQL scripts using a python code, so my code was not "spark dependent", but I am not sure what will be the implications of doing this when you want multiprocessing. –
Oct 27, 2022 · I am trying to find similarity between two texts by comparing them. For this, I can calculate the tf-idf values of both texts and get them as RDD correctly. . Pizza john
Check Apache Spark installation on Windows 10 steps. Use different versions of Apache Spark (tried 2.4.3 / 2.4.2 / 2.3.4). Disable firewall windows and antivirus that I have installed. Tried to initialize the SparkContext manually with sc = spark.sparkContext (found this possible solution at this question here in Stackoverflow, didn´t work for ...We are trying to implement master and slave in 2 different laptops using apache spark, however the worker is not connecting to the master, even though it is on the same network and the following er...Dec 13, 2021 · Using PySpark, I am attempting to convert a spark DataFrame to a pandas DataFrame using the following: # Enable Arrow-based columnar data transfers spark.conf.set("spark.sql.execution.arrow.en... Nov 5, 2016 · A guess: your Spark master (on 10.20.30.50:7077) runs a different Spark version (perhaps 1.6?): your driver code uses Spark 2.0.1, which (I think) doesn't even use Akka, and the message on the master says something about failing to decode Akka protocol - can you check the version used on master? Invalidates the cached entries for Apache Spark cache, which include data and metadata of the given table or view. The invalidated cache is populated in lazy manner when the cached table or the query associated with it is executed again. REFRESH [TABLE] table_name Manually restart the cluster.Nov 9, 2021 · Caused by: org.apache.spark.SparkException: Job aborted due to stage failure: Task 0 in stage 43.0 failed 1 times, most recent failure: Lost task 0.0 in stage 43.0 (TID 97) (ip-10-172-188- 62.us-west-2.compute.internal executor driver): java.lang.OutOfMemoryError: Java heap space. Check the Availability of Free RAM - whether it matches the expectation of the job being executed. Run below on each of the servers in the cluster and check how much RAM & Space they have in offer. free -h. If you are using any HDFS files in the Spark job , make sure to Specify & Correctly use the HDFS URL.这样再用这16个TPs取分别执行其 c.seekToEnd (TP)时,遇到这8个已经分配到consumer-B的TPs,就会抛此异常; 个人理解: 这个实现应是Spark-Streaming-Kafak这个框架的要求,即每个Spark-kafak任务, consumerGroup必须是专属 (唯一的); 相关原理和源码. DirectKafkaInputDStream.latestOffsets(){ val parts ...The text was updated successfully, but these errors were encountered:The cluster version Im using is the latest: 3.3.1\Hadoop 3. The master node is starting without an issue and Im able to register the workers on each worker node using the following comand: spark-class org.apache.spark.deploy.worker.Worker spark://<Master-IP>:7077 --host <Worker-IP>. When I register the worker , its able to connect and register ...Nov 7, 2017 · org.apache.spark.SparkException: **Job aborted due to stage failure: Task 0 in stage 1.0 failed 1 times, most recent failure: Lost task 0.0 in stage 1.0 (TID 1 ... Exception message: Exception thrown in awaitResult: .Retrying 1 more times. 2020-07-24 22:01:18,988 WARN [Thread-9] redshift.RedshiftWriter (RedshiftWriter.scala:retry$1(135)) - Sleeping 30000 milliseconds before proceeding to retry redshift copy 2020-07-24 22:01:45,785 INFO [spark-dynamic-executor-allocation] spark.ExecutorAllocationManager ...Check the Availability of Free RAM - whether it matches the expectation of the job being executed. Run below on each of the servers in the cluster and check how much RAM & Space they have in offer. free -h. If you are using any HDFS files in the Spark job , make sure to Specify & Correctly use the HDFS URL. .