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[core.metrics] remove process field #115200

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[core.metrics] remove process field #115200

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Bamieh
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@Bamieh Bamieh commented Oct 15, 2021 •
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Remove deprecated process field in favor of the processes field. This change is needed for the future when we start supporting multi-process Kibana instances.

For now metrics reporting the process field simply unwrap the first process in the array. In the future once we have multi-processes in Kibana we'll add more sophisticated logic to unwrap those values.

Related work: #113149
Closes #104124

@Bamieh Bamieh added v8.0.0 release_note:skip Skip the PR/issue when compiling release notes auto-backport Deprecated - use backport:version if exact versions are needed v7.16.0 labels Oct 15, 2021
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kibanamachine commented Oct 15, 2021 •
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💔 Build Failed

Failed CI Steps

Test Failures

Jest Tests.src/core/server/metrics.MetricsService #start invokes setInterval with the configured interval

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Failed Tests Reporter:
  - Test has not failed recently on tracked branches

Stack Trace

TypeError: Cannot read property '0' of undefined
    at getEcsOpsMetricsLog (/var/lib/jenkins/workspace/elastic+kibana+pipeline-pull-request/kibana/src/core/server/metrics/logging/get_ops_metrics_log.ts:20:28)
    at MetricsService.refreshMetrics (/var/lib/jenkins/workspace/elastic+kibana+pipeline-pull-request/kibana/src/core/server/metrics/metrics_service.ts:77:31)
    at processTicksAndRejections (internal/process/task_queues.js:95:5)
    at MetricsService.setup (/var/lib/jenkins/workspace/elastic+kibana+pipeline-pull-request/kibana/src/core/server/metrics/metrics_service.ts:51:5)
    at Object.<anonymous> (/var/lib/jenkins/workspace/elastic+kibana+pipeline-pull-request/kibana/src/core/server/metrics/metrics_service.test.ts:46:7)
Jest Tests.src/core/server/metrics.MetricsService #start collects the metrics at every interval

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Stack Trace

TypeError: Cannot read property '0' of undefined
    at getEcsOpsMetricsLog (/var/lib/jenkins/workspace/elastic+kibana+pipeline-pull-request/kibana/src/core/server/metrics/logging/get_ops_metrics_log.ts:20:28)
    at MetricsService.refreshMetrics (/var/lib/jenkins/workspace/elastic+kibana+pipeline-pull-request/kibana/src/core/server/metrics/metrics_service.ts:77:31)
    at processTicksAndRejections (internal/process/task_queues.js:95:5)
    at MetricsService.setup (/var/lib/jenkins/workspace/elastic+kibana+pipeline-pull-request/kibana/src/core/server/metrics/metrics_service.ts:51:5)
    at Object.<anonymous> (/var/lib/jenkins/workspace/elastic+kibana+pipeline-pull-request/kibana/src/core/server/metrics/metrics_service.test.ts:56:7)
Jest Tests.src/core/server/metrics.MetricsService #start resets the collector after each collection

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Failed Tests Reporter:
  - Test has not failed recently on tracked branches

Stack Trace

TypeError: Cannot read property '0' of undefined
    at getEcsOpsMetricsLog (/var/lib/jenkins/workspace/elastic+kibana+pipeline-pull-request/kibana/src/core/server/metrics/logging/get_ops_metrics_log.ts:20:28)
    at MetricsService.refreshMetrics (/var/lib/jenkins/workspace/elastic+kibana+pipeline-pull-request/kibana/src/core/server/metrics/metrics_service.ts:77:31)
    at processTicksAndRejections (internal/process/task_queues.js:95:5)
    at MetricsService.setup (/var/lib/jenkins/workspace/elastic+kibana+pipeline-pull-request/kibana/src/core/server/metrics/metrics_service.ts:51:5)
    at Object.<anonymous> (/var/lib/jenkins/workspace/elastic+kibana+pipeline-pull-request/kibana/src/core/server/metrics/metrics_service.test.ts:71:7)

and 8 more failures, only showing the first 3.

Metrics [docs]

Page load bundle

Size of the bundles that are downloaded on every page load. Target size is below 100kb

id before after diff
core 302.8KB 302.8KB +10.0B

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream

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matschaffer commented Oct 27, 2021 •
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@Bamieh I'm checking this out as part of #113149

I can see the new processes section via yarn start but it only has one process.

"processes": [
    {
      "memory": {
        "heap": {
          "total_bytes": 648167424,
          "used_bytes": 541059880,
          "size_limit": 4345298944
        },
        "resident_set_size_bytes": 315817984
      },
      "pid": 18146,
      "event_loop_delay": 11558807.461716937,
      "event_loop_delay_histogram": {
        "min": 9207808,
        "max": 13844479,
        "mean": 11558807.461716937,
        "exceeds": 0,
        "stddev": 1096233.3530730233,
        "from_timestamp": "2021-10-27T07:04:46.678Z",
        "last_updated_at": "2021-10-27T07:04:51.678Z",
        "percentiles": {
          "50": 11862015,
          "75": 12550143,
          "95": 12795903,
          "99": 13377535
        }
      },
      "uptime_ms": 2247843.446167
    }
  ],

Is there a flag I can use to spawn multiple process for better exploratory testing?

This was referenced Oct 28, 2021
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Bamieh commented Nov 9, 2021

@matschaffer Sorry the message was lost in between kibanamachine messages. Currently, we do not have more than 1 process. This is a preparatory work for enabling multi-processes in kibana. So I think your best option is to fake the response to have multiple ones for now

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Sweet. That lines up with what I'm working on in #117615

@matschaffer matschaffer mentioned this pull request Nov 15, 2021
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matschaffer suggested changes Nov 29, 2021
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Let's not do this and do #119560 instead.

@spalger spalger added v7.17.0 and removed v7.16.0 labels Dec 7, 2021
@Bamieh Bamieh closed this Jan 9, 2024
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[Breaking][core.metrics] Remove process field from ops metrics & /stats API
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@Bamieh @kibanamachine @matschaffer @spalger