Bug 1422599
| Summary: | Switch Cassandra to use TWCS compaction | ||
|---|---|---|---|
| Product: | OpenShift Container Platform | Reporter: | Matt Wringe <mwringe> |
| Component: | Hawkular | Assignee: | Matt Wringe <mwringe> |
| Status: | CLOSED ERRATA | QA Contact: | Peng Li <penli> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 3.4.1 | CC: | aos-bugs, jsanda, tdawson |
| Target Milestone: | --- | ||
| Target Release: | 3.4.z | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: |
Cause:
Cassandra was using size tiered compaction and was not performing compactions as often as expected.
Consequence:
Without the compactions occurring as expected, Cassandra would have to deal with extra stale data which would increase the resources required and cause Cassandra to become unstable in some situations.
Fix:
The compaction strategy for Cassandra was changed from size tiered compaction to time window compaction. A better strategy for the time series data we are storing.
Result:
Cassandra should be more stable and perform better.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2017-02-22 18:33:47 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
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Description
Matt Wringe
2017-02-15 16:33:33 UTC
This should be fixed in openshift3/metrics-hawkular-metrics:3.4.1-6, or newer, which should be in all the standard testing areas. Created attachment 1250767 [details]
hawkular-metrics pod log
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-2017:0290 |