Bug 1597530
| Summary: | Async operations can hang when the server is running nunc-stans [rhel-7.5.z] | ||
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| Product: | Red Hat Enterprise Linux 7 | Reporter: | Oneata Mircea Teodor <toneata> |
| Component: | 389-ds-base | Assignee: | mreynolds |
| Status: | CLOSED ERRATA | QA Contact: | Viktor Ashirov <vashirov> |
| Severity: | urgent | Docs Contact: | Marc Muehlfeld <mmuehlfe> |
| Priority: | urgent | ||
| Version: | 7.4 | CC: | ekeck, gparente, mreynolds, msauton, nkinder, rmeggins, tbordaz |
| Target Milestone: | rc | Keywords: | ZStream |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | 389-ds-base-1.3.7.5-25.el7_5 | Doc Type: | Bug Fix |
| Doc Text: |
The nunc-stans framework used by Directory Server can register only one handler at a time to read the connection. The next attempt to register a handler waits for the first one to complete. Previously, if the first handler has never been scheduled, for example, because of network inactivity, other threads attempting to register their handlers hung. Certain asynchronous operations sometimes hung if several threads wanted to register a handler on the same connection. With this update, Directory Server considers the state of connections. If already a handler is registered, the framework now decides if it should cancel a not dispatched handler or if it force or ignore the new handler. As a result, asynchronous operations in Directory Server no longer hang.
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Story Points: | --- |
| Clone Of: | 1597384 | Environment: | |
| Last Closed: | 2018-08-16 14:20:08 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 1597384 | ||
| Bug Blocks: | |||
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Description
Oneata Mircea Teodor
2018-07-03 07:22:47 UTC
Build tested: 389-ds-base-1.3.7.5-25.el7_5.x86_64 Cmocka unit tests pass: PASS: test_nuncstans PASS: test_nuncstans_stress_small PASS: test_nuncstans_stress_large No hang was observed during the acceptance testing, marking as VERIFIED, SanityOnly. Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2018:2454 |