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HPCC-18243 Reduce scope of collatorsLock spinlock #10401

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merged 1 commit into from Sep 8, 2017

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richardkchapman
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Signed-off-by: Richard Chapman rchapman@hpccsystems.com

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
    • 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

Testing:

TBD

@hpcc-jirabot
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@richardkchapman
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Moves some logging (that we do see, though possibly should consider reducing frequency of) out of the locked block.

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Automated Smoketest: ✅
Sha: b4ab955
Build: success
Build: success
ECL Watch: Rebuilding Site

errors warnings build time
0 65 92.265 seconds

Install hpccsystems-platform-community_6.4.2-rc2.el7.x86_64.rpm
HPCC Start: OK

Unit tests result:

Test total passed failed errors timeout
unittest 96 96 0 0 0
wutoolTest(Dali) 19 19 0 0 0
wutoolTest(Cassandra) 19 19 0 0 0

Regression test result:

phase total pass fail
setup (hthor) 11 11 0
setup (thor) 11 11 0
setup (roxie) 11 11 0
test (hthor) 733 733 0
test (thor) 627 627 0
test (roxie) 760 760 0

HPCC Stop: OK
HPCC Uninstall: OK

@richardkchapman
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@ghalliday Please review. Can wait for 6.4.4 or indeed 7.0.0

{
SpinBlock b(collatorsLock);
collators[ruid] = msgColl;
}
msgColl->Link();
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Is this safe after the SpinBlock?

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I think it is, as the object is still owned by the caller.

@ghalliday
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One question, otherwise looks correct.

@richardkchapman richardkchapman changed the base branch from candidate-6.4.2 to master September 8, 2017 12:24
Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
@ghalliday ghalliday merged commit 0999266 into hpcc-systems:master Sep 8, 2017
@richardkchapman richardkchapman deleted the collator-spinlock branch November 22, 2017 10:52
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