This is a glossary of all the common issues in Apache Pulsar
  • 28-Dec-2022
Lightrun Team
Author Lightrun Team
This is a glossary of all the common issues in Apache Pulsar

Troubleshooting Common Issues in Apache Pulsar

Lightrun Team
Lightrun Team

Project Description


Apache Pulsar is an open source distributed messaging and streaming platform that provides a high-performance, scalable, and low-latency solution for processing and moving large volumes of data in real-time. Pulsar is designed to handle a wide range of use cases, including messaging, data streaming, log aggregation, and event processing. Pulsar is based on a distributed architecture that allows it to scale horizontally across multiple servers or clusters. It supports a variety of messaging and streaming APIs, including publish-subscribe, queuing, and Kafka-compatible APIs, which allow developers to easily integrate it into their applications.
Pulsar also includes a range of features that make it well-suited for real-time data processing and analysis, such as support for event-time processing, data replay, and message deduplication. It is also highly available and fault-tolerant, with features like replication and failover to ensure that data is not lost in the event of a failure. Pulsar is developed as an open source project by the Apache Software Foundation and is freely available for anyone to use. It is often used to build distributed systems that need to process and move large volumes of data in real-time, such as IoT applications, real-time analytics, and microservices architectures.

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The following issues are the most popular issues regarding this project:

Java compiling can fail with NullPointerException and mask a compilation issue


This problem can occur if the Pulsar Java compiler encounters an error while trying to compile the code, but is unable to properly report the error and instead throws a NullPointerException.

There could be a few different causes for this issue:

  1. The Java code might contain syntax errors or other issues that are causing the compiler to fail. In this case, you might need to review the code and try to identify and fix any issues that could be causing the compilation to fail.
  2. There might be a problem with the Pulsar Java compiler itself, such as a bug or an issue with its configuration. In this case, you might need to check that you have the latest version of the Pulsar Java compiler installed and that it is configured correctly. You might also need to check that you have all of the necessary dependencies and libraries installed and configured correctly.
  3. There might be a problem with the development environment or with the machine on which the code is being compiled. In this case, you might need to check that you have the necessary tools and libraries installed and configured correctly, and that there are no issues with the machine or the network connection.

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