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window.__adobe_cep__ is undefined when using Bolt CEP + React extension on Windows (but works on macOS)
I’ve created an Adobe Premiere Pro extension using bolt-cep and React. Everything works perfectly on macOS (ARM), but on Windows, I keep running into the following error :
"Uncaught TypeError: ...
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1
answer
59
views
transform pyspark a single row of input condition values into multiple rows of individual conditions
I have a PySpark DataFrame that contains a single row but multiple columns (in context of sql where clause). It just like column start_date with value >date("2025年01月01日") then new column ...
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1
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114
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Esper or Siddhi for Aggregation Event Processing and Scalability to a Large Number of Tasks
I have the following task: let's assume I'm developing an online store used by a million users. Users make purchases at different times. Each purchase by each user turns into a transaction event. I ...
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1
answer
121
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Drools going OutOfMemory after upgrade 6.4.0 to 8.44.2
We're upgrading a Drools Fusion application from 6.4.0 to 8.44.2. The application is managing just 1 single long running KieSession in stream mode (config.setOption(EventProcessingOption.STREAM)). ...
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166
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Why is my Drools application using a large amount of memory for JoinNodeLeftTuple objects, and how can I optimize my rules?
I'm working on a Drools-based application, and I've been experiencing high memory usage, particularly due to a large number of JoinNodeLeftTuple objects in the heap. This seems to scale with the ...
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1
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60
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Null getUnderlying() in Esper Listener Despite Pattern Match
I'm using Esper 8.9 for complex event processing in a Spring Boot application. Despite configuring my events and patterns correctly, the getUnderlying() method in my UpdateListener implementation ...
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1
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73
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Retrieving all events in esper epl pattern
I have this pattern which I want to apply on a stream of events to detect two events that don't happen in order and they have one property which equall. However, the statement returns fine, but the ...
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414
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Sliding Window in Apache Flink emitting results before the window is complete
I am trying to implement Sliding window using Apache Flink in Java. I have been referring to the below document:
Windows| Apache Flink
As per my use case, I receive an incoming data stream from Kafka. ...
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2
answers
122
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Flink CPU grows gradually overtime resulting in a container kill
In our production clusters we see a pattern over 14 days flink CPU climbs up resulting in container kill.
Flink heap shows a growth as shown in the graph below. The initial theory is CPU is ...
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Flink cep key by will not decrease in usage status
Using FLINK CEP, the key by operator is used before the flow, and the rocksDB is used for the state backend. It is found that the state keeps rising and does not decrease, even if no new data is ...
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1
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99
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WSO2 Stream Processor (SP) Json string cannot be parsed to a json object
Here I have a siddhi application setup like below:
WSO2 SP
I have saved it and started it. I am trying to start an event in the cmd as shown below:
Console log
But I get this error;
error message
Any ...
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2
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91
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WSO2 Stream Processor (SP) Error "could not initialize carbon deployment engine"
I have an issue with my web IDE. The WSO2 SP or siddhi-tooling-5.1.2 starts up as you would expect and I can open the website. However, in the console upon startup it gives this error.
This is an ...
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192
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VSCode IntelliSense for commonJS modules using path.join()
In an Adobe CEP panel that I am working on which also uses NodeJS, I have been using the following approach to require other modules:
require('path');
const moduleA = require(path.join(__dirname, &...
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2
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133
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How to get second largest value as second value in esper
I'm trying to get the second value as the second largest value in Esper. But, unfortunately, it says the nested subquery is not working. So, how can I get the second largest value in Esper?
My Query ...
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73
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How can scale complex event based processing? (best practices for algorithmic trading)
I have some algorithms that receive market data as events and process them to send order requests with an API. The problem is scaling these algorithms to support many users and many algorithm ...