Add jvm aware setting and max num docs settings for batching docs for…

… percolate queries (opensearch-project#1435)

* add jvm aware and max docs settings for batching docs for percolate queries

Signed-off-by: Surya Sashank Nistala <snistala@amazon.com>

* fix stats logging

Signed-off-by: Surya Sashank Nistala <snistala@amazon.com>

* add queryfieldnames field in findings mapping

Signed-off-by: Surya Sashank Nistala <snistala@amazon.com>

---------

Signed-off-by: Surya Sashank Nistala <snistala@amazon.com>

alerting/src/main/kotlin/org/opensearch/alerting/AlertingPlugin.kt

@@ -83,6 +83,7 @@ import org.opensearch.commons.alerting.model.SearchInput
 import org.opensearch.env.Environment
 import org.opensearch.env.NodeEnvironment
 import org.opensearch.index.IndexModule
+import org.opensearch.monitor.jvm.JvmStats
 import org.opensearch.painless.spi.PainlessExtension
 import org.opensearch.painless.spi.Whitelist
 import org.opensearch.painless.spi.WhitelistLoader
@@ -226,6 +227,7 @@ internal class AlertingPlugin : PainlessExtension, ActionPlugin, ScriptPlugin, R
             .registerTriggerService(TriggerService(scriptService))
             .registerAlertService(AlertService(client, xContentRegistry, alertIndices))
             .registerDocLevelMonitorQueries(DocLevelMonitorQueries(client, clusterService))
+            .registerJvmStats(JvmStats.jvmStats())
             .registerConsumers()
             .registerDestinationSettings()
         scheduledJobIndices = ScheduledJobIndices(client.admin(), clusterService)
@@ -273,6 +275,8 @@ internal class AlertingPlugin : PainlessExtension, ActionPlugin, ScriptPlugin, R
             AlertingSettings.ALERT_HISTORY_MAX_DOCS,
             AlertingSettings.ALERT_HISTORY_RETENTION_PERIOD,
             AlertingSettings.ALERTING_MAX_MONITORS,
+            AlertingSettings.PERCOLATE_QUERY_DOCS_SIZE_MEMORY_PERCENTAGE_LIMIT,
+            AlertingSettings.PERCOLATE_QUERY_MAX_NUM_DOCS_IN_MEMORY,
             AlertingSettings.REQUEST_TIMEOUT,
             AlertingSettings.MAX_ACTION_THROTTLE_VALUE,
             AlertingSettings.FILTER_BY_BACKEND_ROLES,