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Posted to commits@pulsar.apache.org by GitBox <gi...@apache.org> on 2022/05/13 10:40:23 UTC
[GitHub] [pulsar] Shawyeok commented on issue #5202: Incorrect msgBacklog value
Shawyeok commented on issue #5202:
URL: https://github.com/apache/pulsar/issues/5202#issuecomment-1125905102
We are suffering from same problem here, msgBacklog is 40k+ but real msgBacklog is 0. It is annoying cause it'll trigger alert but there isn't any real backlog.
Stats with `preciseBacklog=false`
```json
{
"msgRateIn": 0.0,
"msgThroughputIn": 0.0,
"msgRateOut": 0.0,
"msgThroughputOut": 0.0,
"bytesInCounter": 335230277,
"msgInCounter": 1584209,
"bytesOutCounter": 177108372,
"msgOutCounter": 789829,
"averageMsgSize": 0.0,
"msgChunkPublished": false,
"storageSize": 305110652,
"backlogSize": 296556524,
"offloadedStorageSize": 0,
"lastOffloadLedgerId": 0,
"lastOffloadSuccessTimeStamp": 0,
"lastOffloadFailureTimeStamp": 0,
"publishers": [ ],
"waitingPublishers": 0,
"subscriptions": {
"sub0": {
"msgRateOut": 0.0,
"msgThroughputOut": 0.0,
"bytesOutCounter": 3064627,
"msgOutCounter": 16150,
"msgRateRedeliver": 0.0,
"chunkedMessageRate": 0,
"msgBacklog": 44708,
"backlogSize": 0,
"msgBacklogNoDelayed": 44708,
"blockedSubscriptionOnUnackedMsgs": false,
"msgDelayed": 0,
"unackedMessages": 0,
"type": "Shared",
"msgRateExpired": 0.0,
"totalMsgExpired": 0,
"lastExpireTimestamp": 0,
"lastConsumedFlowTimestamp": 1652265631373,
"lastConsumedTimestamp": 0,
"lastAckedTimestamp": 0,
"lastMarkDeleteAdvancedTimestamp": 1652265631403,
"consumers": [],
"isDurable": true,
"isReplicated": false,
"consumersAfterMarkDeletePosition": {},
"nonContiguousDeletedMessagesRanges": 0,
"nonContiguousDeletedMessagesRangesSerializedSize": 60,
"durable": true,
"replicated": false
},
"sub1": {
"msgRateOut": 0.0,
"msgThroughputOut": 0.0,
"bytesOutCounter": 171894114,
"msgOutCounter": 761896,
"msgRateRedeliver": 0.0,
"chunkedMessageRate": 0,
"msgBacklog": 0,
"backlogSize": 0,
"msgBacklogNoDelayed": 0,
"blockedSubscriptionOnUnackedMsgs": false,
"msgDelayed": 0,
"unackedMessages": 0,
"type": "Shared",
"msgRateExpired": 0.0,
"totalMsgExpired": 0,
"lastExpireTimestamp": 0,
"lastConsumedFlowTimestamp": 1652336505371,
"lastConsumedTimestamp": 1652336498413,
"lastAckedTimestamp": 1652336512153,
"lastMarkDeleteAdvancedTimestamp": 1652336512153,
"consumers": [ ],
"isDurable": true,
"isReplicated": false,
"consumersAfterMarkDeletePosition": {},
"nonContiguousDeletedMessagesRanges": 0,
"nonContiguousDeletedMessagesRangesSerializedSize": 22,
"durable": true,
"replicated": false
}
},
"replication": {},
"deduplicationStatus": "Disabled",
"nonContiguousDeletedMessagesRanges": 0,
"nonContiguousDeletedMessagesRangesSerializedSize": 82,
"compaction": {
"lastCompactionRemovedEventCount": 0,
"lastCompactionSucceedTimestamp": 0,
"lastCompactionFailedTimestamp": 0,
"lastCompactionDurationTimeInMills": 0
}
}
```
internal-stats
```json
{
"waitingCursorsCount": 1,
"pendingAddEntriesCount": 0,
"entriesAddedCounter": 1584209,
"numberOfEntries": 1413448,
"totalSize": 305110652,
"currentLedgerEntries": 0,
"currentLedgerSize": 0,
"lastLedgerCreatedTimestamp": "2022-05-12T18:04:59.17+08:00",
"lastLedgerCreationFailureTimestamp": "",
"lastConfirmedEntry": "114272945:43409",
"state": "LedgerOpened",
"ledgers": [
{
"ledgerId": 113999206,
"entries": 50000,
"size": 8831300,
"offloaded": false
},
...
{
"ledgerId": 114327876,
"entries": 0,
"size": 0,
"offloaded": false
}
],
"cursors": {
"sub0": {
"markDeletePosition": "114272945:43409",
"readPosition": "114272945:43410",
"waitingReadOp": false,
"pendingReadOps": 0,
"messagesConsumedCounter": 1539501,
"cursorLedger": 114594694,
"cursorLedgerLastEntry": 0,
"individuallyDeletedMessages": "[]",
"lastLedgerWitchTimestamp": "",
"state": "Open",
"numberOfEntriesSinceFirstNotAckedMessage": 1,
"totalNonContiguousDeletedMessagesRange": 0,
"properties": {}
},
"sub1": {
"markDeletePosition": "114272945:43409",
"readPosition": "114272945:43410",
"waitingReadOp": true,
"pendingReadOps": 0,
"messagesConsumedCounter": 1584421,
"cursorLedger": 114275529,
"cursorLedgerLastEntry": 16661,
"individuallyDeletedMessages": "[]",
"lastLedgerWitchTimestamp": "",
"state": "Open",
"numberOfEntriesSinceFirstNotAckedMessage": 1,
"totalNonContiguousDeletedMessagesRange": 0,
"properties": {}
}
}
}
```
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