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[Backport 0.5-nexus] Add external scheduler metrics #856

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Oct 31, 2024
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[Backport 0.5-nexus] Add external scheduler metrics #856

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5 changes: 5 additions & 0 deletions flint-core/src/main/java/org/opensearch/flint/core/metrics/MetricConstants.java
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Original file line number Diff line number Diff line change
Expand Up @@ -160,6 +160,11 @@ public final class MetricConstants {
*/
public static final String CHECKPOINT_DELETE_TIME_METRIC = "checkpoint.delete.processingTime";

/**
* Prefix for externalScheduler metrics
*/
public static final String EXTERNAL_SCHEDULER_METRIC_PREFIX = "externalScheduler.";

/**
* Metric prefix for tracking the index state transitions
*/
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9 changes: 9 additions & 0 deletions ...n/scala/org/opensearch/flint/spark/scheduler/FlintSparkJobExternalSchedulingService.scala
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Expand Up @@ -10,6 +10,7 @@ import java.time.Instant
import org.opensearch.flint.common.metadata.log.FlintMetadataLogEntry.IndexState
import org.opensearch.flint.common.scheduler.AsyncQueryScheduler
import org.opensearch.flint.common.scheduler.model.{AsyncQuerySchedulerRequest, LangType}
import org.opensearch.flint.core.metrics.{MetricConstants, MetricsUtil}
import org.opensearch.flint.core.storage.OpenSearchClientUtils
import org.opensearch.flint.spark.FlintSparkIndex
import org.opensearch.flint.spark.refresh.util.RefreshMetricsAspect
Expand Down Expand Up @@ -83,8 +84,16 @@ class FlintSparkJobExternalSchedulingService(
case AsyncQuerySchedulerAction.REMOVE => flintAsyncQueryScheduler.removeJob(request)
case _ => throw new IllegalArgumentException(s"Unsupported action: $action")
}
addExternalSchedulerMetrics(action)

None // Return None for all cases
}
}

private def addExternalSchedulerMetrics(action: AsyncQuerySchedulerAction): Unit = {
val actionName = action.name().toLowerCase()
MetricsUtil.addHistoricGauge(
MetricConstants.EXTERNAL_SCHEDULER_METRIC_PREFIX + actionName + ".count",
1)
}
}
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