Check for plugin conflicts

Oct 13, 2025 by wbrum.org 116 views

Introduction

The H5Z-ZFP filter plugin is a crucial component of the HDF5 library, designed to provide efficient compression and storage of data. However, users have reported issues with the plugin, particularly when used in "plugin" mode. In this article, we will delve into the problem and explore possible solutions.

Background

The H5Z-ZFP filter plugin is designed to be used either as a "normal" plugin or as a "library". The plugin works fine in library mode, but fails in "plugin" mode, claiming that the dataspace ID is not a valid ID. This issue has been reported by users who are using HDF5 version 1.14.5 with gcc-11.2.1 on various systems.

Symptoms

The symptoms of this issue are as follows:

The H5Z-ZFP filter plugin works fine in library mode.
The plugin fails in "plugin" mode, claiming that the dataspace ID is not a valid ID.
The dataspace ID printed in the "can_apply" method is the same in both library mode and plugin mode.
The dataspace ID printed in the "can_apply" method is different by one numerical value in library mode and plugin mode.

Possible Causes

There are several possible causes of this issue:

Incorrect dataspace ID: The dataspace ID passed to the "can_apply" method may be incorrect, leading to the plugin failing.
Plugin mode issue: The plugin mode may be causing the issue, as it is not as robust as library mode.
HDF5 version issue: The issue may be specific to HDF5 version 1.14.5, and may be resolved in later versions.

Troubleshooting Steps

To troubleshoot this issue, follow these steps:

Verify the dataspace ID: Verify that the dataspace ID passed to the "can_apply" method is correct.
Check the plugin mode: Check if the plugin mode is enabled, and if it is, try disabling it to see if the issue resolves.
Update HDF5 version: Update HDF5 to a later version, if possible, to see if the issue is resolved.
Check for plugin conflicts: Check if there are any conflicts with other plugins, and try disabling them to see if the issue resolves.

Conclusion

The H5Z-ZFP filter plugin is a crucial component of the HDF5 library, and its failure in "plugin" mode can be a significant issue. By following the troubleshooting steps outlined above, users can identify and resolve the issue. If the issue persists, it may be necessary to update HDF5 to a later version or seek further assistance from the HDF5 community.

Additional Information

For internal use only:

SUPPORT-2158: This is the support ticket number for this issue.

HDF5 Filter Plugins: This article provides an overview of HDF5 filter plugins and their usage.
HDF5 Library Mode: This article provides an overview of HDF5 library mode and its usage.
HDF5 Plugin Mode: This article provides an overview of HDF5 plugin mode and its usage.

References

HDF5 Documentation: The official HDF5 documentation provides detailed information on HDF5 filter plugins, library mode, and plugin mode.
HDF5 Community Forum: The HDF5 community forum provides a platform for users to discuss HDF5-related issues and seek assistance from other users and developers.
H5Z-ZFP Filter Plugin Issues: A Q&A Guide =====================================================

Introduction

The H5Z-ZFP filter plugin is a crucial component of the HDF5 library, designed to provide efficient compression and storage of data. However, users have reported issues with the plugin, particularly when used in "plugin" mode. In this article, we will provide a Q&A guide to help users troubleshoot and resolve common issues with the H5Z-ZFP filter plugin.

Q: What is the H5Z-ZFP filter plugin?

A: The H5Z-ZFP filter plugin is a component of the HDF5 library that provides efficient compression and storage of data. It is designed to be used either as a "normal" plugin or as a "library".

Q: What are the common issues with the H5Z-ZFP filter plugin?

A: The common issues with the H5Z-ZFP filter plugin include:

Failure in "plugin" mode, claiming that the dataspace ID is not a valid ID.
Incorrect dataspace ID passed to the "can_apply" method.
Plugin mode issue, causing the plugin to fail.
HDF5 version issue, causing the plugin to fail.

Q: How do I troubleshoot the H5Z-ZFP filter plugin issue?

A: To troubleshoot the H5Z-ZFP filter plugin issue, follow these steps:

Verify the dataspace ID passed to the "can_apply" method.
Check if the plugin mode is enabled, and if it is, try disabling it to see if the issue resolves.
Update HDF5 to a later version, if possible, to see if the issue is resolved.
Check for plugin conflicts, and try disabling them to see if the issue resolves.

Q: What are the possible causes of the H5Z-ZFP filter plugin issue?

A: The possible causes of the H5Z-ZFP filter plugin issue include:

Incorrect dataspace ID passed to the "can_apply" method.
Plugin mode issue, causing the plugin to fail.
HDF5 version issue, causing the plugin to fail.
Plugin conflicts, causing the plugin to fail.

Q: How do I resolve the H5Z-ZFP filter plugin issue?

A: To resolve the H5Z-ZFP filter plugin issue, follow these steps:

Update HDF5 to a later version, if possible.
Check for plugin conflicts, and try disabling them.
Verify the dataspace ID passed to the "can_apply" method.
Check if the plugin mode is enabled, and if it is, try disabling it.

Q: What are the best practices for using the H5Z-ZFP filter plugin?

A: The best practices for using the H5Z-ZFP filter plugin include:

Verify the dataspace ID passed to the "can_apply" method.
Check if the plugin mode is enabled, and if it is, try disabling it.
Update HDF5 to a later version, if possible.
Check for plugin conflicts, and try disabling them.

Q: Where can I find more information about the H5Z-ZFP filter plugin?

A: You can find more information about the H5Z-ZFP filter plugin in the following resources:

HDF5 Documentation: The official HDF5 documentation provides detailed information on HDF5 filter plugins, library mode, and plugin mode.
HDF5 Community Forum: The HDF5 community forum provides a platform for users to discuss HDF5-related issues and seek assistance from other users and developers.

Conclusion

The H5Z-ZFP filter plugin is a crucial component of the HDF5 library, and its failure in "plugin" mode can be a significant issue. By following the troubleshooting steps and best practices outlined in this article, users can identify and resolve the issue. If the issue persists, it may be necessary to update HDF5 to a later version or seek further assistance from the HDF5 community.