[Java] Introduce SnapshotDurationTracker #1532
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eliquinox
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aeron-cluster/src/main/java/io/aeron/cluster/service/SnapshotDurationTracker.java
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In general LGTM. |
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@eliquinox Why not use a plain DutyCycleStallTracker which we is used in all other places? |
vyazelenko
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This PR introduces a set of counters that enable monitoring of snapshot duration within Cluster's Consensus Module:
AeronCounters#CLUSTER_CONSENSUS_MODULE_MAX_SNAPSHOT_DURATION_TYPE_IDto track maximum snapshot duration.AeronCounters#CLUSTER_CONSENSUS_MODULE_SNAPSHOT_DURATION_THRESHOLD_EXCEEDED_TYPE_IDto track number of times a predefined threshold value (see below) has been exceeded.Threshold value can be set via
aeron.cluster.consensus.module.snapshot.thresholdproperty or viaio.aeron.cluster.ConsensusModule.Context#snapshotDurationThresholdNs(long).