Org.apache.spark.sparkexception exception thrown in awaitresult - 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.

 
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:. Cute women

Exception logs: 2018-08-26 16:15:02 INFO DAGScheduler:54 - ResultStage 0 (parquet at ReadDb2HDFS.scala:288) failed in 1008.933 s due to Job aborted due to stage failure: Task 0 in stage 0.0 failed 4 times, most recent failure: Lost task 0.3 in stage 0.0 (TID 3, master, executor 4): ExecutorLostFailure (executor 4 exited caused by one of the ...org.apache.spark.sql.execution.joins.BroadcastHashJoin.doExecute(BroadcastHashJoin.scala:110) BroadcastHashJoin physical operator in Spark SQL uses a broadcast variable to distribute the smaller dataset to Spark executors (rather than shipping a copy of it with every task).Teams. Q&A for work. Connect and share knowledge within a single location that is structured and easy to search. Learn more about Teamsinstall the spark chart. port-forward the master port. submit the app. Output of helm version: Write the 127.0.0.1 r-spark-master-svc into /etc/hosts. Execute kubectl port-forward --namespace default svc/r-spark-master-svc 7077:7077.Add the dependencies on the /jars directory on your SPARK_HOME for each worker in the cluster and the driver (if you didn't do so). I used the second approach. During my docker image creation, I added the libs so when I start my cluster, all containers already have the libraries required.Apr 11, 2016 · 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. – Dec 28, 2017 · setting spark.driver.maxResultSize = 0 solved my problem in pyspark. I was using pyspark standalone on a single machine, and I believed it was okay to set unlimited size. – Thamme Gowda 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.Jan 14, 2023 · org.apache.spark.SparkException: Job aborted due to stage failure: Task 0 in stage 0.0 failed 4 times, most recent failure: Lost task 0.3 in stage 0.0 (TID 3) (10.139.64.6 executor 0): org.apache.spark.SparkException: Exception thrown in awaitResult: Go to the Executor 0 and check why it failed 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 spaceI want to create an empty dataframe out of an existing spark dataframe. I use pyarrow support (enabled in spark conf). When I try to create an empty dataframe out of an empty RDD and the same schem...Apr 8, 2019 · Create 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 ... Solve : org.apache.spark.SparkException: Job aborted due to stage failure 0 Spark Session Problem: Exception: Java gateway process exited before sending its port numberSpark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。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. Hi I am facing a problem related to pyspark, I use df.show() it still give me a result but when I use some function like count(), groupby() v..v it show me error, I think the reason is that 'df' is...Aug 31, 2018 · 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... 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 ...Stack Overflow Public questions & answers; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Talent Build your employer brandApr 15, 2021 · An Azure service that provides an enterprise-wide hyper-scale repository for big data analytic workloads and is integrated with Azure Blob Storage. 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。 问题解决： Yarn throws the following exception in cluster mode when the application is really small: Dec 20, 2022 · 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. Add the dependencies on the /jars directory on your SPARK_HOME for each worker in the cluster and the driver (if you didn't do so). I used the second approach. During my docker image creation, I added the libs so when I start my cluster, all containers already have the libraries required.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: ... install the spark chart. port-forward the master port. submit the app. Output of helm version: Write the 127.0.0.1 r-spark-master-svc into /etc/hosts. Execute kubectl port-forward --namespace default svc/r-spark-master-svc 7077:7077.Feb 11, 2020 · Hi there, I reached out internally to the product team and this is an issue known to them. They have fixed the issue and the fix is being deployed. 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. Yarn throws the following exception in cluster mode when the application is really small: 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 ... I have followed java.lang.IllegalArgumentException: The servlets named [X] and [Y] are both mapped to the url-pattern [/url] which is not permitted this and it works!!!!!Yarn throws the following exception in cluster mode when the application is really small: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 ...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.Jun 21, 2019 · 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. Feb 11, 2020 · Hi there, I reached out internally to the product team and this is an issue known to them. They have fixed the issue and the fix is being deployed. I have an app where after doing various processes in pyspark I have a smaller dataset which I need to convert to pandas before uploading to elasticsearch. I have res = result.select("*").toPandas() On my local when I use spark-submit --master "local[*]" app.py It works perfectly fine. I also ...public static <T> T awaitResult(scala.concurrent.Awaitable<T> awaitable, scala.concurrent.duration.Duration atMost) throws SparkException Preferred alternative to Await.result() . This method wraps and re-throws any exceptions thrown by the underlying Await call, ensuring that this thread's stack trace appears in logs.Solve : org.apache.spark.SparkException: Job aborted due to stage failure 0 Spark Session Problem: Exception: Java gateway process exited before sending its port numberSpark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。Caused by: org.apache.spark.SparkException: Job aborted due to stage failure: Serialized task 2:0 was 155731289 bytes, which exceeds max allowed: spark.rpc.message.maxSize (134217728 bytes). Consider increasing spark.rpc.message.maxSize or using broadcast variables for large values.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 ...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:An error occurred while calling o466.getResult. : org.apache.spark.SparkException: Exception thrown in awaitResult: at org.apache.spark.util.ThreadUtils$.awaitResult (ThreadUtils.scala:428) at org.apache.spark.security.SocketAuthServer.getResult (SocketAuthServer.scala:107) at org.apache.spark.security.SocketAuthServer.getResult (SocketAuthSe...An Azure service that provides an enterprise-wide hyper-scale repository for big data analytic workloads and is integrated with Azure Blob Storage.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...Mar 29, 2020 · 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 ... I have followed java.lang.IllegalArgumentException: The servlets named [X] and [Y] are both mapped to the url-pattern [/url] which is not permitted this and it works!!!!!I want to create an empty dataframe out of an existing spark dataframe. I use pyarrow support (enabled in spark conf). When I try to create an empty dataframe out of an empty RDD and the same schem...Nov 2, 2020 · Teams. Q&A for work. Connect and share knowledge within a single location that is structured and easy to search. Learn more about Teams 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 .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。 问题解决： 1、查找原因. 网上有很多的解决方法，但是基本都不太符合我的情况。. 罗列一下其他的解决方法. sparkSql的需要手动添加 。. option ("driver", "com.mysql.jdbc.Driver" ) 就是驱动的名字写错了（逗号 、分号、等等）. 驱动缺失，去spark集群添加mysql的驱动，或者提交任务的 ...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. 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$1(135)) - Sleeping 30000 milliseconds before proceeding to retry redshift copy 2020-07-24 22:01:45,785 INFO [spark-dynamic-executor-allocation] spark.ExecutorAllocationManager ...Add the dependencies on the /jars directory on your SPARK_HOME for each worker in the cluster and the driver (if you didn't do so). I used the second approach. During my docker image creation, I added the libs so when I start my cluster, all containers already have the libraries required.Feb 25, 2019 · Add the dependencies on the /jars directory on your SPARK_HOME for each worker in the cluster and the driver (if you didn't do so). I used the second approach. During my docker image creation, I added the libs so when I start my cluster, all containers already have the libraries required. Dec 13, 2021 · Using PySpark, I am attempting to convert a spark DataFrame to a pandas DataFrame using the following: # Enable Arrow-based columnar data transfers spark.conf.set(&quot;spark.sql.execution.arrow.en... Dec 20, 2022 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question.Provide details and share your research! But avoid …. Asking for help, clarification, or responding to other answers. org.apache.spark.SparkException: Exception thrown in awaitResult: at org.apache.spark.util.ThreadUtils$.awaitResult(ThreadUtils.scala:205) at org.apache.spark.rpc.RpcEnv.setupEndpointRefByURI(RpcEnv.scala:100) 6066 is an HTTP port but via Jobserver config it's making an RPC call to 6066. I am not sure if I have missed anything or is an issue.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. 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:Nov 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 ... Hi I am facing a problem related to pyspark, I use df.show() it still give me a result but when I use some function like count(), groupby() v..v it show me error, I think the reason is that 'df' is...Used Spark version Spark:2.2.0 (in Ambari) Used Spark Job Server version (Released version, git branch or docker image version) Spark-Job-Server:0.9 / 0.8 Deployed mode (client/cluster on Spark Sta...The text was updated successfully, but these errors were encountered: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, Feb 8, 2021 · The text was updated successfully, but these errors were encountered: 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. Spark SQL Java: Exception in thread "main" org.apache.spark.SparkException 2 Spark- Exception in thread java.lang.NoSuchMethodErrorNov 10, 2016 · 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 ... 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...Nov 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 ... 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. 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. I am trying to store a data frame to HDFS using the following Spark Scala code. All the columns in the data frame are nullable = true Intermediate_data_final.coalesce(100).write .option("...Sep 22, 2016 · The above scenario works with spark 1.6 (which is quite surprising that what's wrong with spark 2.0 (or with my installation , I will reinstall, check and update here)). Has anybody tried this on spark 2.0 and got success , by following Yaron's answer below??? An Azure analytics service that brings together data integration, enterprise data warehousing, and big data analytics. Previously known as Azure SQL Data Warehouse.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. setting spark.driver.maxResultSize = 0 solved my problem in pyspark. I was using pyspark standalone on a single machine, and I believed it was okay to set unlimited size. – Thamme GowdaNov 10, 2016 · 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 ... Jul 23, 2018 · org.apache.spark.SparkException: Exception thrown in awaitResult: at org.apache.spark.util.ThreadUtils$.awaitResult(ThreadUtils.scala:205) at org.apache.spark.rpc.RpcEnv.setupEndpointRefByURI(RpcEnv.scala:100) 6066 is an HTTP port but via Jobserver config it's making an RPC call to 6066. I am not sure if I have missed anything or is an issue. Jul 25, 2020 · 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 ...

I am trying to store a data frame to HDFS using the following Spark Scala code. All the columns in the data frame are nullable = true Intermediate_data_final.coalesce(100).write .option(".... Bficsymc

org.apache.spark.sparkexception exception thrown in awaitresult

Hi! I am having the same problem here. Exception in thread "main" java.lang.reflect.UndeclaredThrowableException at org.apache.hadoop.security.UserGroupInformation ...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.Viewed 6k times. 4. I'm processing large spark dataframe in databricks and when I'm trying to write the final dataframe into csv format it gives me the following error: org.apache.spark.SparkException: Job aborted. #Creating a data frame with entire date seuence for each user df=pd.DataFrame ( {'transaction_date':dt_range2,'msno':msno1}) from ...org.apache.spark.SparkException: Exception thrown in awaitResult: at org.apache.spark.util.ThreadUtils$.awaitResult(ThreadUtils.scala:205) at org.apache.spark.rpc.RpcEnv.setupEndpointRefByURI(RpcEnv.scala:100) 6066 is an HTTP port but via Jobserver config it's making an RPC call to 6066. I am not sure if I have missed anything or is an issue.Dec 11, 2017 · hello everyone I am working on PySpark Python and I have mentioned the code and getting some issue, I am wondering if someone knows about the following issue? windowSpec = Window.partitionBy( 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 ... 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.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. Nov 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 ... 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 ...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 ...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 Feb 4, 2022 · Currently I'm doing PySpark and working on DataFrame. I've created a DataFrame: from pyspark.sql import * import pandas as pd spark = SparkSession.builder.appName(&quot;DataFarme&quot;).getOrCreate... 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. 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. 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 want to create an empty dataframe out of an existing spark dataframe. I use pyarrow support (enabled in spark conf). When I try to create an empty dataframe out of an empty RDD and the same schem...Dec 12, 2022 · 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 ... Spark SQL Java: Exception in thread "main" org.apache.spark.SparkException 2 Spark- Exception in thread java.lang.NoSuchMethodErrorNov 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 ... .

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