Fixing Event Log file cleanup issue#36
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* Add latency and failure metrics for Publish Cluster State Metrics from master's perspective * Update Javadoc * Add new line at the end * Empty Queue before running each test * Addressed comments * Metrics for disabled collector * Fixing bug in MasterClusterStateUpdateStatsCollector Co-authored-by: Arpita Mathur <arpitamt@amazon.com>
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Jul 13, 2021
| // In case files deletion takes longer/fails, we are okay with eventQueue reaching | ||
| // its max size (100000), post that {@link PerformanceAnalyzerMetrics#emitMetric()} | ||
| // will emit metric {@link WriterMetrics#METRICS_WRITE_ERROR} and return. | ||
| cleanup(); |
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Because the cleanup is called after the files are written, the first time this thread runs, it will delete even the most recently written files because the call to cleanup will not have the lastCleanupTimeBucket and hence deleteAllFiles will be called deleting everything but the .tmp files.
Because the full cleanup is just a one time cleanup and happens at the start, let's do it in the constructor itself ?
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Agreed. This would cause to lose the first timebucket metrics. I would address this as part of separate PR I will have for StatCollector refactoring.
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Fixing Event Log file cleanup issue
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* Create writer file if metrics are available (#31) Signed-off-by: Sruti Parthiban <partsrut@amazon.com> * Add tests to check for writer file only if metrics are present (#35) Signed-off-by: Sruti Parthiban <partsrut@amazon.com> * Merge pull request #36 from opensearch-project/khushbr-writer-purge-fix Fixing Event Log file cleanup issue * Moving deleteAllFiles() to inside scheduleExecutor() * Fixing the Link Checker errors, updating the official documentation * nit: Fixing spotlessJava indentation issue * Merge pull request #37 from khushbr/feature/purge-fix Handling purging of lingering files before scheduleExecutor start. * Fix failing file handler test (#38) Signed-off-by: Sruti Parthiban <partsrut@amazon.com> * Remove dependency on main branch when running spotless. (#47) Signed-off-by: Marc Handalian <handalm@amazon.com> * Updates to gradle build file (#48) * Updates to gradle build file Signed-off-by: Sruti Parthiban <partsrut@amazon.com> * Add ability to specify RCA branch Signed-off-by: Sruti Parthiban <partsrut@amazon.com> * Fix build when opensearch_version flag is provided. (#52) Signed-off-by: Marc Handalian <handalm@amazon.com> * Update the version to 1.0.1 Signed-off-by: Sruti Parthiban <partsrut@amazon.com> Co-authored-by: Khushboo Rajput <59671881+khushbr@users.noreply.github.com> Co-authored-by: Khushboo Rajput <khushbr@amazon.com> Co-authored-by: Marc Handalian <handalm@amazon.com>
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Is your feature request related to a problem?
Issue : #33
[performance-analyzer-rca] PR: opensearch-project/performance-analyzer-rca#27
Previous PR [now closed] : #34
Describe the solution you are proposing
purgeQueueAndPersist()invokesdeleteFiles()every filesCleanupPeriod (default to 60s), to cleanup the older event log files and then writes the latest event log files withwriteAndRotate()MetricsPurgeActivityclass instantiation.Describe alternatives you've considered
Another approach was to launch a new thread and invoke 'MetricsPurgeActivity' within it. We will again run into the same issue if this thread dies, thus to keep the cleanup and write within same thread was better.
Testing
Tested by spinning up a docker container. Manually copied 100 dummy files to
/dev/shm/performanceanalyzer/.Enabled DEBUG logs to verify cleanup is working as expected
Metrics:
Metric
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