diff --git a/content/en/docs/20.0/reference/vreplication/metrics.md b/content/en/docs/20.0/reference/vreplication/metrics.md index d6320703c..bcd83588e 100644 --- a/content/en/docs/20.0/reference/vreplication/metrics.md +++ b/content/en/docs/20.0/reference/vreplication/metrics.md @@ -16,6 +16,10 @@ During the copy phase we run one loop of bulk copy for approximately an hour at _VReplicationCopyRowCount_ counts the number of rows copied during the copy phase per stream and _VReplicationCopyRowCountTotal_ the total across all streams. +#### VReplicationDDLActions + +This metric counts the number of DDL actions — based on [the value of the OnDDL strategy configured for the workflow](../vreplication/#handle-ddl) — that have been taken in the current workflow streams. + #### VReplicationErrors _VReplicationErrors_ counts the number of times errors occurred during vreplication. Errors are keyed @@ -25,6 +29,10 @@ by the type of error. _VReplicationHeartbeat_ records, for each stream, the timestamp sent by the last heartbeat event for that stream. +#### VReplicationLagSeconds, VReplicationLagSecondsMax, VReplicationLagSecondsTotal + +These metrics show the replication lag of the target stream with respect to the source stream. _VReplicationLagSeconds_ shows the current replication lag and _VReplicationLagSecondsMax_ has the maximum lag in this stream. Note that these values are only valid during the replication phase of a workflow. + #### VReplicationMessages _VReplicationMessages_ contains a stack of the last N (currently 3) messages of a vreplication stream. @@ -36,14 +44,6 @@ _VReplicationPhaseTimings_ counts the total time taken by the runs, VReplicationPhaseTimingsCounts the number of runs and _VReplicationPhaseTimingsTotals_ the total runs across all streams. -#### VReplicationTableCopyRowCounts - -_VReplicationTableCopyRowCounts_ counts the number of rows copied during the copy phase per table per stream. - -#### VReplicationTableCopyTimings - -_VReplicationTableCopyTimings_ counts the time taken per table per stream during the copy phase of the stream. Unlike _VReplicationPhaseTimings_, this metric updates continuously, rather than being set once at the end of the copy phase. - #### VReplicationQPS _VReplicationQPS_ is a list of QPS values for each loop of each phase of the workflow. @@ -52,10 +52,6 @@ _VReplicationQPS_ is a list of QPS values for each loop of each phase of the wor _VReplicationQueryCount_ is the total number of queries in each phase of a workflow. _VReplicationQueryCountTotal_ is the total queries across all phases and workflows. -#### VReplicationLagSeconds, VReplicationLagSecondsMax, VReplicationLagSecondsTotal - -These metrics show the replication lag of the target stream with respect to the source stream. _VReplicationLagSeconds_ shows the current replication lag and _VReplicationLagSecondsMax_ has the maximum lag in this stream. Note that these values are only valid during the replication phase of a workflow. - #### VReplicationSource Shows the keyspace and shard of the source from which this target stream is replicating @@ -72,6 +68,14 @@ The number of streams running on this target This shows the state of each stream. +#### VReplicationTableCopyRowCounts + +_VReplicationTableCopyRowCounts_ counts the number of rows copied during the copy phase per table per stream. + +#### VReplicationTableCopyTimings + +_VReplicationTableCopyTimings_ counts the time taken per table per stream during the copy phase of the stream. Unlike _VReplicationPhaseTimings_, this metric updates continuously, rather than being set once at the end of the copy phase. + #### VReplicationThrottledCounts The number of times vreplication was throttled by workflow, id, throttler (trx or tablet), and the sub-component (vstreamer, vcopier, vplayer, etc) that was throttled (see [the other tablet throttler metrics](../../features/tablet-throttler/#metrics)) @@ -82,38 +86,38 @@ The total number of times that vreplication has been throttled (see [the other t ## Source Tablet Metrics -#### VStreamPacketSize +#### VStreamerCompressedTransactionsDecoded -The value of the `vstream_packet_size` flag specified for this tablet +The total number of compressed transactions (MySQL's binlog_transaction_compression=ON) decoded by this vttablet across all workflows #### VStreamerCount The current number of running vstreamers -#### VStreamerErrors +#### VStreamersCreated -The number of errors per category across workflows +The total number of vstreamers created during the lifetime of this tablet #### VStreamersEndedWithErrors The total number of errors that caused a stream to stall +#### VStreamerErrors + +The number of errors per category across workflows + #### VStreamerEventsStreamed The total number of events streamed by this vttablet across all workflows -#### VStreamerCompressedTransactionsDecoded +#### VStreamPacketSize -The total number of compressed transactions (MySQL's binlog_transaction_compression=ON) decoded by this vttablet across all workflows +The value of the `vstream_packet_size` flag specified for this tablet #### VStreamerNumPackets The total number of packets sent by this vttablet across all workflows -#### VStreamersCreated - -The total number of vstreamers created during the lifetime of this tablet -
## Example