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How to Read a CSV File from Amazon S3 Using Python (With Headers and Rows Displayed)

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  Introduction If you’re working with cloud data, especially on AWS, chances are you’ll encounter data stored in CSV files inside an Amazon S3 bucket . Whether you're building a data pipeline or a quick analysis tool, reading data directly from S3 in Python is a fast, reliable, and scalable way to get started. In this blog post, we’ll walk through: Setting up access to S3 Reading a CSV file using Python and Boto3 Displaying headers and rows Tips to handle larger datasets Let’s jump in! What You’ll Need An AWS account An S3 bucket with a CSV file uploaded AWS credentials (access key and secret key) Python 3.x installed boto3 and pandas libraries installed (you can install them via pip) pip install boto3 pandas Step-by-Step: Read CSV from S3 Let’s say your S3 bucket is named my-data-bucket , and your CSV file is sample-data/employees.csv . ✅ Step 1: Import Required Libraries import boto3 import pandas as pd from io import StringIO boto3 is...
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How to Check Kafka Available Brokers

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Brokers


Here's the command to check the list of brokers present in a Kafka Cluster. You can say the Broker is the heart of the Kafka cluster. In simple terms, it works as a process.

The main function is to receive messages from publishers and gives permission to access messages by consumers.

How to Check Available Brokers in Kafka

Here is the command:

linux$ ./zookeeper-shell.sh zookeeper-IPaddress:2181 | "ls /brokers/ids"

Just use the above command to get the number of brokers present in your host (Kafka Cluster).

What is Default Broker-id in Kafka 

The default broker id is -1. When you create a new broker, it adds to -1. Then, it gives a new broker id. The broker ids will be generated from reserved.broker.max.id + 1.


Types of broker ids.

  1. Use assigned
  2. Zookeeper generated broker id.


According to Wiki:

Kafka runs on a cluster of one or more servers (called brokers), and the partitions of all topics are distributed across the cluster nodes. 


Overview of Kafka

Additionally, partitions are replicated to multiple brokers. This architecture allows Kafka to deliver massive streams of messages in a fault-tolerant fashion and has allowed it to replace some of the conventional messaging systems like Java Message Service (JMS), Advanced Message Queuing Protocol (AMQP), etc. Since the 0.11.0.0 release, Kafka offers transactional writes, which provide an exactly-once stream.


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