Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

HPCC-33126 Add FNV-1a hashing function and use in jptree #19361

Open
wants to merge 1 commit into
base: candidate-9.2.x
Choose a base branch
from
Open

HPCC-33126 Add FNV-1a hashing function and use in jptree #19361

wants to merge 1 commit into from

Conversation

jakesmith
Copy link
Member

@jakesmith jakesmith commented Dec 13, 2024 •
edited
Loading

Resolves some pathologically slow cases of hash collisions in jptree maps.

Type of change:

  • This change is a bug fix (non-breaking change which fixes an issue).
  • This change is a new feature (non-breaking change which adds functionality).
  • This change improves the code (refactor or other change that does not change the functionality)
  • This change fixes warnings (the fix does not alter the functionality or the generated code)
  • This change is a breaking change (fix or feature that will cause existing behavior to change).
  • This change alters the query API (existing queries will have to be recompiled)

Checklist:

  • My code follows the code style of this project.
    • My code does not create any new warnings from compiler, build system, or lint.
  • The commit message is properly formatted and free of typos.
    • The commit message title makes sense in a changelog, by itself.
    • The commit is signed.
  • My change requires a change to the documentation.
    • I have updated the documentation accordingly, or...
    • I have created a JIRA ticket to update the documentation.
    • Any new interfaces or exported functions are appropriately commented.
  • I have read the CONTRIBUTORS document.
  • The change has been fully tested:
    • I have added tests to cover my changes.
    • All new and existing tests passed.
    • I have checked that this change does not introduce memory leaks.
    • I have used Valgrind or similar tools to check for potential issues.
  • I have given due consideration to all of the following potential concerns:
    • Scalability
    • Performance
    • Security
    • Thread-safety
    • Cloud-compatibility
    • Premature optimization
    • Existing deployed queries will not be broken
    • This change fixes the problem, not just the symptom
    • The target branch of this pull request is appropriate for such a change.
  • There are no similar instances of the same problem that should be addressed
    • I have addressed them here
    • I have raised JIRA issues to address them separately
  • This is a user interface / front-end modification
    • I have tested my changes in multiple modern browsers
    • The component(s) render as expected

Smoketest:

  • Send notifications about my Pull Request position in Smoketest queue.
  • Test my draft Pull Request.

Testing:

@jakesmith jakesmith requested a review from ghalliday December 13, 2024 12:09
@github-actions GitHub Actions
Copy link

Jira Issue: https://hpccsystems.atlassian.net//browse/HPCC-33126

Jirabot Action Result:
Assigning user: [email protected]
Workflow Transition To: Merge Pending
Updated PR

@jakesmith
HPCC-33126 Add FNV-1a hashing function and use in jptree
93cc5bc 
Resolves some pathologically slow cases of hash collisions in
jptree maps.

Signed-off-by: Jake Smith <[email protected]>
@jakesmith jakesmith force-pushed the HPCC-33126-jptree-fnv1a branch from a453cf6 to 93cc5bc Compare December 13, 2024 13:06
ghalliday
ghalliday approved these changes Dec 20, 2024
View reviewed changes
Copy link
Member

@ghalliday ghalliday left a comment

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Looks ok. I will run compiler regression suite justin case it has any impact there

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Reviewers

@ghalliday ghalliday ghalliday approved these changes

Assignees
No one assigned
Labels
None yet
Projects
None yet
Milestone
No milestone
Development

Successfully merging this pull request may close these issues.
2 participants
@jakesmith @ghalliday