dataflow

How to create data flow diagrams using Java

由 一个人想着一个人 提交于 2019-12-13 04:39:32
问题 I'm an engineering student; I studied dataflow graphs. I already made parser using Antlr, but I don't know how to make dataflow diagrams. I read some paper that one can make dataflow graphs using Java. Please help me. 回答1: JGraph may be used for this, as discussed in review article. 回答2: The NetBeans Visual Library can be used for this: http://platform.netbeans.org/graph/ You don't need to build a NetBeans platform application (or even use NetBeans) in order to use it: http://java.dzone.com

How To Filter None Values Out Of PCollection

由 点点圈 提交于 2019-12-13 03:58:41
问题 My pubsub pull subscription is sending over the message and a None value for each message. I need to find a way to filter out the none values as part of my pipeline processing Of course some help preventing the none values from arriving from the pull subscription would be nice. But I feel like I'm missing something about the general workflow of defining & applying functions via ParDo. I've set up a function to filter out none values which seems to work based on a print to console check,

EnvironmentObject in SwiftUI

由 我只是一个虾纸丫 提交于 2019-12-12 22:21:43
问题 To my knowledge, I should be able to use EnvironmentObject to observe & access model data from any view in the hierarchy. I have a view like this, where I display a list from an array that's in LinkListStore. When I open AddListView and add an item, it correctly refreshes the ListsView with the added item. However, if I use a PresentationButton to present, I have to do AddListView().environmentObject(listStore), otherwise there will be a crash when showing AddListView. Is my basic assumption

Error using airflow's DataflowPythonOperator to schedule dataflow job

由 荒凉一梦 提交于 2019-12-12 12:54:40
问题 I am trying to schedule dataflow jobs using airflow's DataflowPythonOperator. Here is my dag operator: test = DataFlowPythonOperator( task_id = 'my_task', py_file = 'path/my_pyfile.py', gcp_conn_id='my_conn_id', dataflow_default_options={ "project": 'my_project', "runner": "DataflowRunner", "job_name": 'my_job', "staging_location": 'gs://my/staging', "temp_location": 'gs://my/temping', "requirements_file": 'path/requirements.txt' } ) The gcp_conn_id has been setup and it could work. And the

How to reconfigure the column information on a flat file connection manager?

由 只谈情不闲聊 提交于 2019-12-12 12:11:02
问题 I have a Flat File Source that is reading data from a flat file. We have recently added a new column to this flat file. The flat file data is inserted into a database table. To accommodate the new field in the destination component, I used the ALTER TABLE statement to add the new column to the table. That is the only change I have done. Should the mapping between flat file and destination component automatically change? I do not see the additional column present in the flat file anywhere

How to get the line numbers of PHP source code executed in more robust way [duplicate]

由 怎甘沉沦 提交于 2019-12-12 10:32:37
问题 This question already has answers here : What is the difference between single-quoted and double-quoted strings in PHP? (11 answers) php replace $variable in string with the content of $variable (8 answers) Closed 10 days ago . I'm trying to get the line numbers of PHP source code implemented at that run time. I used __LINE__ function which return the line number that implemented based on the condition that I gave. I try to put most of the senario of PHP source. However, the function still

Unable to run multiple Pipelines in desired order by creating template in Apache Beam

由 血红的双手。 提交于 2019-12-12 04:46:02
问题 I have two separate Pipelines say 'P1' and 'P2'. As per my requirement I need to run P2 only after P1 has completely finished its execution. I need to get this entire operation done through a single Template. Basically Template gets created the moment it finds run() its way say p1.run(). So what I can see that I need to handle two different Pipelines using two different templates but that would not satisfy my strict order based Pipeline execution requirement. Another way I could think of

Polymer: can't get this.__data__ passing in from host

由 ＊爱你＆永不变心＊ 提交于 2019-12-12 02:20:56
问题 I have a very simple project: app/ parent.html child.html index.html I try to pass data from parent to child and then get them within Polymer(): index.html <!DOCTYPE html> <html> <head> <link rel="import" href="bower_components/polymer/polymer.html"> <link rel="import" href="app/parent.html"/> </head> <body> <h1>Hello Paul!</h1> <x-comphost></x-comphost> </body> </html> app/parent.html <link rel="import" href="child.html"/> <dom-module id="x-comphost" noscript> <template> <h4>Hello, man!</h4>

Record only certain rows of a text file in SSIS

由 别来无恙 提交于 2019-12-12 02:06:48
问题 I'm having a hard time trying to do a simple loading of data from a flat file to a database. The problem is that there are bad rows or at least rows that are not formatted as data in that text file. Sample.txt: Stackoverflow School at Philippines Record: 100101 Date: 6/20/2014 Name: Age: About: -------------------- --- -------------------------- Coolai 19 Bad Row Question Qwerty 17 Java Qwerty 19 C# *User1 21 Dynamic Data User4 27 Assembly Stackoverflow School at Nippon Record: 100102 Date: 6

Dataflow Apache beam Python job stuck at Group by step

由 我是研究僧i 提交于 2019-12-11 14:13:37
问题 I am running a dataflow job, which readed from BigQuery and scans around 8 GB of data and result in more than 50,000,000 records. Now at group by step I want to group based on a key and one column need to be concatenated . But After concatenated size of concatenated column becomes more than 100 MB that why I have to do that group by in dataflow job because that group by can not be done in Bigquery level due to row size limit of 100 MB. Now the dataflow job scales well when reading from
订阅 dataflow