cdap

问题 How do i add run time parameter/arguments to CDAP pipeline. We can set parameters in all the Transforms, Source and Target nodes and manually enter the values at run time in the Datafusion environments. However in a production environments i would want a parameter file to feed the values to the pipeline, how do i achieve this functionality. In the CDAP documentation i don't find anything useful regarding the run time arguments. I am new to datafusion and am not very familiar with the

问题 I am having a runtime argument set at namespace which is business_date: ${logicalStartTime(yyyy-MM-dd)} . I am using this argument in my pipeline and want to use the same in other pipeline. There are many pipelines back to back and I want to the value to be same throughout the pipelines once calculated in the first pipeline. suppose the value is calculates as '2020-08-20 20:14:11' and once the pipeline one succeeded i am passing this argument to pipeline 2, but as this arguments are defined

问题 In addition to Argument Setter Plugin, is there any other way to set runtime arguments in a pipeline? For example，I calculated the total number of error messages，and I want to set in a runtime argument so that the email sender can use it? Someone can take a look and help me. Thanks. 回答1: There are multiple ways you can set the runtime argument of a pipeline. Argument Setter plugin Passing runtime argument when starting a pipeline Setting Preferences 来源： https://stackoverflow.com/questions

问题 In addition to Argument Setter Plugin, is there any other way to set runtime arguments in a pipeline? For example，I calculated the total number of error messages，and I want to set in a runtime argument so that the email sender can use it? Someone can take a look and help me. Thanks. 回答1: There are multiple ways you can set the runtime argument of a pipeline. Argument Setter plugin Passing runtime argument when starting a pipeline Setting Preferences 来源： https://stackoverflow.com/questions

来源： https://stackoverflow.com/questions/63725833/pipeline-on-oracle-cdap-to-bigquery-multitables

来源： https://stackoverflow.com/questions/63628152/pipeline-dependencies-in-data-fusion

问题 I'm trying to use custom transform using a column at Wrangler Plugin. Is there any documentation where I can find the list of functions to apply the custom transform? Also for a specific case, I wanna replace the value of a column based on IF-ELSE condition (or multiple cases). Is there any way of it? 回答1: The custom transform supports JEXL, so you can find a list of functions to apply here: JEXL syntax. See the Conditional section of that page for information on how to do an if-else. 回答2:

问题 I have a requirement to build a Data Studio dashboard and to use data from BigQuery dataset. I have imported my data to BQ using Data Fusion from an on-premise MS SQL server, and the requirement is I have to delete the last 5 days of the records and import new updated records for the same time range on top of the records in the BQ dataset... So far I was able to do all the work with the pipeline but when I run the pipeline it does append the data again into the BQ table and I end up with

问题 I want to read a csv file that is available to Sftp server by using a cdap source plugin. I came across FTP Batch Source plugin that does the same. But when running this i am getting below exception. Caused by: java.io.IOException: No FileSystem for scheme: sftp at org.apache.hadoop.fs.FileSystem.getFileSystemClass(FileSystem.java:2798) ~[org.apache.hadoop.hadoop-common-2.8.0.jar:na] at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2809) ~[org.apache.hadoop.hadoop-common-2

问题 I want to read a csv file that is available to Sftp server by using a cdap source plugin. I came across FTP Batch Source plugin that does the same. But when running this i am getting below exception. Caused by: java.io.IOException: No FileSystem for scheme: sftp at org.apache.hadoop.fs.FileSystem.getFileSystemClass(FileSystem.java:2798) ~[org.apache.hadoop.hadoop-common-2.8.0.jar:na] at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2809) ~[org.apache.hadoop.hadoop-common-2