Question

我在s3上存储了一个pyspark文件。我试图使用spark REST API运行它。

我正在运行以下命令：

curl -X POST http://<ip-address>:6066/v1/submissions/create --header "Content-Type:application/json;charset=UTF-8" --data '{
"action" : "CreateSubmissionRequest",
"appArgs" : [ "testing.py"],
"appResource" : "s3n://accessKey:secretKey/<bucket-name>/testing.py",
"clientSparkVersion" : "1.6.1",
"environmentVariables" : {
    "SPARK_ENV_LOADED" : "1"
},
"mainClass" : "org.apache.spark.deploy.SparkSubmit",
"sparkProperties" : {
"spark.driver.supervise" : "false",
"spark.app.name" : "Simple App",
"spark.eventLog.enabled": "true",
"spark.submit.deployMode" : "cluster",
"spark.master" : "spark://<ip-address>:6066",
"spark.jars" : "spark-csv_2.10-1.4.0.jar",
"spark.jars.packages" : "com.databricks:spark-csv_2.10:1.4.0"
}
}'

并且testing.py文件有一个代码片段：

myContext = SQLContext(sc)
format = "com.databricks.spark.csv"
dataFrame1 = myContext.read.format(format).option("header", "true").option("inferSchema", "true").option("delimiter",",").load(location1).repartition(1)
dataFrame2 = myContext.read.format(format).option("header", "true").option("inferSchema", "true").option("delimiter",",").load(location2).repartition(1)
outDataFrame = dataFrame1.join(dataFrame2, dataFrame1.values == dataFrame2.valuesId)
outDataFrame.write.format(format).option("header", "true").option("nullValue","").save(outLocation)

但是就这一行：

dataFrame1 = myContext.read.format(format).option("header", "true").option("inferSchema", "true").option("delimiter",",").load(location1).repartition(1)

我得到例外：

java.lang.ClassNotFoundException: Failed to find data source: com.databricks.spark.csv. Please find packages at http://spark-packages.org
Caused by: java.lang.ClassNotFoundException: com.databricks.spark.csv.DefaultSource

我正在尝试不同的事情，其中一件事是我登录到ip-address机器并运行了这个命令：

./bin/spark-shell --packages com.databricks:spark-csv_2.10:1.4.0

这样它就会在.ivy2 / cache文件夹中下载spark-csv。但这并没有解决问题。我做错了什么？

Answer 1

（代表OP发布）。

我首先在驱动程序和工作机上添加了spark-csv_2.10-1.4.0.jar。并添加了

"spark.driver.extraClassPath" : "absolute/path/to/spark-csv_2.10-1.4.0.jar",
"spark.executor.extraClassPath" : "absolute/path/to/spark-csv_2.10-1.4.0.jar",

然后我收到了以下错误：

java.lang.NoClassDefFoundError: org/apache/commons/csv/CSVFormat
Caused by: java.lang.ClassNotFoundException: org.apache.commons.csv.CSVFormat

然后我在两台机器上添加了commons-csv-1.4.jar并添加了：

"spark.driver.extraClassPath" : "/absolute/path/to/spark-csv_2.10-1.4.0.jar:/absolute/path/to/commons-csv-1.4.jar",
"spark.executor.extraClassPath" : "/absolute/path/to/spark-csv_2.10-1.4.0.jar:/absolute/path/to/commons-csv-1.4.jar",

这解决了我的问题。

Spark REST API：无法找到数据源：com.databricks.spark.csv

1 个答案: