[Regression] Catalogue Update Scans The Whole Collection, Ignoring Catalog_verify_by_time Option

by ADMIN 97 views

Description

In recent updates, the catalogue update process in Ampache has become significantly slower, despite the presence of the catalog_verify_by_time option set to true in the ampache.cfg.php file. This regression is a departure from the previous behavior, where the catalogue update process was more efficient. In this article, we will delve into the details of this issue, explore the steps to reproduce it, and discuss the expected behavior.

Describe the Bug

The bug in question is related to the catalogue update process in Ampache. Specifically, it appears that the catalog_verify_by_time option is being ignored, causing the update process to scan the entire collection, rather than only updating the files that have been modified since the last scan. This results in a significant slowdown of the update process, making it less efficient and more time-consuming.

To Reproduce

To reproduce this issue, follow these steps:

Step 1: Launch the Update CLI Command

Run the following command in your terminal:

cli run:updateCatalog -e

This will initiate the catalogue update process.

Step 2: Check the Logs

In the logs, look for the "Reading tags from ..." debug message. You should see this message appear for every single file in the collection. This indicates that the update process is scanning the entire collection, rather than only updating the modified files.

Expected Behavior

The expected behavior is that the catalogue update process should only read and update the files that have been modified since the last scan. This is in line with the catalog_verify_by_time option being set to true. The update process should be more efficient and less time-consuming, as it only updates the necessary files.

Environment

The following environment details are relevant to this issue:

  • Ampache version: 7.3.0
  • Web server + version: nginx
  • Server operating system: Debian 12
  • Client operating system: Debian 12

Settings

The relevant settings in the ampache.cfg.php file are:

catalog_verify_by_time = "true"

This setting is intended to enable the catalogue update process to only update the files that have been modified since the last scan. However, in this regression, it appears that this option is being ignored.

Conclusion

In conclusion, the catalogue update process in Ampache has become slower due to a regression that ignores the catalog_verify_by_time option. This results in the update process scanning the entire collection, rather than only updating the modified files. To reproduce this issue, follow the steps outlined above. The expected behavior is that the update process should only read and update the modified files, making it more efficient and less time-consuming.

Recommendations

To resolve this issue, we recommend the following:

  1. Update to the latest develop branch: Before posting an issue, try to reproduce the issue with the latest develop branch. There is a good chance that a fix is already pending for the next version.
  2. Verify the catalog_verify_by_time option: Ensure that the catalog_verify_by_time option is set to true in the ampache.cfg.php.
  3. Check the logs: Verify that the "Reading tags from ..." debug message appears for every single file in the collection.
  4. Report the issue: If the issue persists, report it to the Ampache team, providing the necessary details and environment information.

Q: What is the regression in catalogue update scans?

A: The regression in catalogue update scans is a bug that causes the catalogue update process in Ampache to scan the entire collection, rather than only updating the files that have been modified since the last scan. This results in a significant slowdown of the update process.

Q: What is the expected behavior of the catalogue update process?

A: The expected behavior of the catalogue update process is that it should only read and update the files that have been modified since the last scan. This is in line with the catalog_verify_by_time option being set to true.

Q: Why is the catalog_verify_by_time option being ignored?

A: The exact reason why the catalog_verify_by_time option is being ignored is not clear. However, it is believed to be a regression that was introduced in a recent update.

Q: How can I reproduce the issue?

A: To reproduce the issue, follow these steps:

  1. Launch the update CLI command: cli run:updateCatalog -e
  2. Check the logs for the "Reading tags from ..." debug message. You should see this message appear for every single file in the collection.

Q: What are the environment details that are relevant to this issue?

A: The following environment details are relevant to this issue:

  • Ampache version: 7.3.0
  • Web server + version: nginx
  • Server operating system: Debian 12
  • Client operating system: Debian 12

Q: What settings are relevant to this issue?

A: The following settings are relevant to this issue:

catalog_verify_by_time = "true"

Q: How can I resolve this issue?

A: To resolve this issue, we recommend the following:

  1. Update to the latest develop branch: Before posting an issue, try to reproduce the issue with the latest develop branch. There is a good chance that a fix is already pending for the next version.
  2. Verify the catalog_verify_by_time option: Ensure that the catalog_verify_by_time option is set to true in the ampache.cfg.php.
  3. Check the logs: Verify that the "Reading tags from ..." debug message appears for every single file in the collection.
  4. Report the issue: If the issue persists, report it to the Ampache team, providing the necessary details and environment information.

Q: What are the benefits of resolving this issue?

A: Resolving this issue will result in a more efficient and less time-consuming catalogue update process. This will improve the overall performance of Ampache and reduce the time it takes to update the catalogue.

Q: How can I stay up-to-date with the latest developments on this issue?

A: To stay up-to-date with the latest developments on this issue, follow the Ampache team on social media or subscribe to their newsletter. You can also check the Ampache documentation and forums for the latest information on this issue.