According to Databricks Apache Parquet is an open source, column-oriented data file format designed for efficient data storage and retrieval. It provides efficient data compression and encoding schemes with enhanced performance to handle complex data in bulk. Apache Parquet is designed to be a common interchange format for both batch and interactive workloads. It is similar to other columnar-storage file formats available in Hadoop, namely RCFile and ORC. (source:

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Currently, many digital artists use generative AI technology as a support to accelerate the delivery of their work. Nowadays it is possible to generate a corresponding image from a text sentence. There are several market solutions for this, including some available to be used through APIs. See some at this link:

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· Nov 27 4m read
What about DMN?

A few months ago, I faced a significant challenge: streamlining the handling of business logic in our application. My goal was to extract the business logic from the code and hand it over to analysts. Dealing with a multitude of rules could easily result in a code littered with countless "if" statements, especially if the coder lacked an understanding of cyclomatic complexity. Such code becomes a source of pain for those working with it—difficult to write, test, and develop.

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How can IRIS productions be deployed more quickly and with greater peace of mind?

The aim of interoperability productions is to enable you to connect systems in order to transform and route messages between them. To connect systems, you develop, configure, deploy and manage productions that integrate several software systems.

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GmOwl is a solution that offers an organized and engaging learning platform. It was developed to cater to the increasing need, for learning tools providing a versatile quiz environment that meets users requirements.

The main objective of GmOwl is to deliver an user experience for individuals participating in quizzes while giving administrators comprehensive control, over content and user engagement.

GmOwl uses Java EE with MVC template, and the InterSystems IRIS database is used to store data. The InterSystems JDBC Driver is used to connect to the database.

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I'm currently facing an issue with a Python script in my IRISHealth environment and would appreciate your insights.

I've written a class method, `getTokenCount`, in Python, which uses the `tiktoken` module. However, when I run the script in the terminal using `do ##class(python.openaiUtils).getTokenCount("")`, I encounter the following error:

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While creating my latest examples for the JavaContest I faced the need
to communicate with my code from a program in IRIS to my Java code.

Communication with |CPIPE| worked as READ or WRITE but not both?
In the Documentation Named PIPEs are explained rather shortly.
"Once open, a pipe acts like an ordinary device." Not so precise.
I failed to achieve my expected READ/WRITE as TCP would offer.

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After upgrading from Cache to IRIS while running the web application I am getting an error in message.log

Error: Create Gateway - Unable to create new gateway connection: ERROR #5023: Remote Gateway Error: <NOTOPEN>%AddToCurrentClassPath+6^%Net.Remote.Gateway.1

Cache Version : Cache for Windows (x86-64) 2018.1.7 (Build 721U) Fri Mar 18 2022 22:07:35 EDT

Upgrade to IRIS Version : IRIS for Windows (x86-64) 2022.1.2 (Build 574_0_22511U) Thu May 11 2023 22:36:05 EDT

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I have received 2 errors while publishing Patient data to repository. Message viewer displays like below and the Application log found bold content.

Could you please help me on this to resolve the errors.

An error occurred with the web application.
It has been logged to system error log (System Operation>System Logs>Application Error Log).

"<METHOD DOES NOT EXIST>OnPage+42^EnsPortal.MessageContents.1 *%Id,HS.FHIRServer.API.Data.Request : CSP Error"

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Based on the successful solution for my 2nd contribution to the Contest
I used an adapted version for this package. And have some findings I'd like to share.

Multiple communication steps over CPIPE may take time.
You won't recognize it on a fast machine. But a slower box with
Windows + Docker Desktop + your browser (and more) is neither
"Speedy Gonzales" nor a "Road Runner". 🙂

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Good day,

We recently had penetration testing conducted on our HealthShare clinical viewer and patient Index instances and below is the recommendation

1. Set a same-site cookie for identified CSPWSERVERID. Please advise where I can do this as I only saw this on web gateway settings and it has enable and disable options only.

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This question originally appeared in the comments of the post: Making Prometheus Monitoring for InterSystems IRIS and Caché

I am new to IRIS, I was setting up the monitoring referring to the above documentation. Please can you help me how can I compile the my.metrics class mentioned in the documentation through CLI in the Linux VM where I am not having studio setup. Could you help me please?

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· Nov 21 2m read
Getting JSON from SQL

Did you know that you can get JSON data directly from your SQL tables?

Let me introduce you to 2 useful SQL functions that are used to retrieve JSON data from SQL queries - JSON_ARRAY and JSON_OBJECT.
You can use those functions in the SELECT statement with other types of select items, and they can be specified in other locations where an SQL function can be used, such as in a WHERE clause

The JSON_ARRAY function takes a comma-separated list of expressions and returns a JSON array containing those values.

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In the world of Big Data, selecting the right file format is crucial for efficient data storage, processing, and analysis. With the massive amount of data generated every day, choosing the appropriate format can greatly impact the speed, cost, and accuracy of data processing tasks. There are several file formats available, each with its own set of advantages and disadvantages, making the decision of which one to use complex. Some of the popular Big Data file formats include CSV, JSON, Avro, ORC, and Parquet.

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Hello, I am going through the log files of my instance and I wanted to know what each part of it meant. I've tried going through the documentation but I wanted clarification.

I understand there is a log viewer, but I want to understand this directly through the text file. For example, if I were to read this-

"11/06/23-21:00:46:680 (444) 0 [Utility.Event] Performing Journal Recovery"

What would each part of this line be called?

Thank you for your assistance.

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Hello community members!

I am trying to connect to Caché database from Azure data factory using ODBC connection. The aim is to read data from Caché and write it in Azure blob storage using copy activity. The ODBC connection is successful and i can see the Caché tables, but i'm facing an error while reading the table contents.

I'm getting the below error :

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Last Friday November 17 suddenly ran into an error where ZPM would issue an error saying:

ERROR! Object open failed because 'Name' key value of 'xx' was not found

I googled but found no specific help. Step by step I was able to conclude that:

  1. This is the error message for error 5770, also known as $$$KeyValueNotFoundOpen.

  2. In objectscript, this error can be raised by calls to NameOpen, where 'Name' is the first quoted part in the error message.

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