I am creating a dataflow pipeline in python in which i need to use FileIO because i want to access and keep track of the filenames processed.
Everything is working fine ,till my files are of small sizes. When running on a large files(GBS of data) , the dataflow job is not performant or scalable.
I have a solution of using splittable Pardos(dofns) which I have earlier implemented using java, but now the preferred language is python.
The problem is that I am unable to find any decent code snippets (example) which will explain how to implement a splittable pardo (dofns) in python sdk.
I have found a code example in the beam documentation https://beam.apache.org/blog/splittable-do-fn/ , but it's not correct as far as I have tried it.
class CountFn(DoFn):
def process(element, tracker=DoFn.RestrictionTrackerParam)
for i in xrange(*tracker.current_restriction()):
if not tracker.try_claim(i):
return
yield element[0], i
def get_initial_restriction(element):
return (0, element[1])
In this example , we are passing tracker=DoFn.RestrictionTrackerParam in the process method, but as I can see DoFn class does not have any parameter RestrictionTrackerParam.
As far as I have tested this example is not complete.
Can i get some help on getting a decent example of splittable dofns used in python sdk.
Related
Based on the introduction of fan-in and fan out on the official website, I designed the flow model as shown in the figure below:
[1]: https://i.stack.imgur.com/DynzW.png
The source has two functions to send out hello and mygod string messages respectively. I want to use the destination function of scdf to bind the two functions to different topics, and then be consumed by 2 sinks, but the function that sends out mygod messages Cannot run successfully (scdf cannot recognize the corresponding function).
Is there any solution?
This specific case on having multiple inputs to a same app (hello-sink app in your case) isn't supported on SCDF OSS but supported in the commercial version of SCDF. You can find the documentation around this here
I want to write a plug-in, that besides other things, apply Enhance/Noise reduction filter. But I found out that there is no similar procedure in the browser. And even no documentation for this filter, which is strange.
So, does anybody knows how to call Noise reduction filter from a plugin? And why some of the filters not documented and not present in procedures?
As its icon indicates, this is a GEGL operation, and unfortunately these have currently no API for scripts.
To be more complete, and as far as I can tell:
No new API has been added for the new GEGL tools
However, for compatibility:
Functions that had an existing non-GEGL implementation have been converted to use the equivalent GEGL tool (for instance deinterlace and blur-gauss still are called plug-in-something in the API but you won't find them listed in pluginrc)
Some plugins that are no longer shown in the UI still have the plugin code to make them callable by legacy scripts (plug-in-sharpen for instance)
Could someone please point me to some tutorial or provide an example code snippet about how to create a diagram/flowchart in Dart? The simple scenario would be to have couple of elements connectable to each other and possibility to read which one is connected where. There are tons of JS examples but for learning purposes I would like to go the Dart way :)
I've been using a wrapper around an JS GraphViz library for a number of projects.
See https://pub.dartlang.org/packages/pubviz - Here's the output: http://kevmoo.github.io/pubviz/
Also https://pub.dartlang.org/packages/gviz
It's not super interactive or anything, but it's useful when you just want to visualize a graph structure.
I'm writing a program (C#) to read, convert, display, adjust and output point cloud data.
I can make every part of the program except for one - I am required to read in a proprietary file format. The data is coming straight from a laser scanner and we cannot get any closer to the stream than what is output to the proprietary file in binary.
I have an SDK from the manufacturer/proprietor that is well outside my scope of ability to deal with.
Firstly it is written in C++, which I can read and write to some degree but this all appears incredibly complex (there are hundred of header/source files).
Secondly, the SDK documentation says that I must create my SLN using CMake which is a nightmare for me also.
Thirdly, the documentation is scarce and horrid.
Basically my question is this:
I know that after a certain amount of header information I should find thousands of lines of "lineref,x,y,z,r,g,b,time,intensity".
Can I bypass the SDK and find another way to read in this file type?
Or, must an SDK from the proprietor be used to interact with their file type due to some sort of encryption?
Intense googeling failed to turn out a single decent example of how to program the RTC.
all I could find were examples for the C5000/4000 models, which seems work differently as I was unable to locate any of the header files required to get the sample code to compile.
the closest I got was finding the RTC user manual, but it's no help at all on the subject of actually programming the real time clock using C
I'd appreciate to no end a working example or a pointer to where such an example exists
I'm assuming you are using TI's DSP/BIOS, as this seems to be the most common manner in which the C6000 family of DSPs are used. The DSP/BIOS operating system provides a number of APIs for interfacing with the real time clock (the CLK module). These APIs abstract away the registers and other low-level details of the RTC as described in the RTC user manual. This is generally the simplest way to use the clock as it avoids the need to manually "program" it.
See the CLK section in the API reference.