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etcd/mvcc
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Ben Cox c20cc05fc5
mvcc: Export a "Last DB compaction" timestamp metric (#12176) 
This is to aid with debugging the effectiveness of systems that
manually take care of cluster compaction, and have greater visibity
into recent compactions.

It can be handy to alert on the exactly how long it was since a
compaction (and also to put on dashboards) had happened.

---

Tested using a test cluster, the final result looks like this:

```
	root@etcd-1:~# ETCDCTL_API=3 /tmp/test-etcd/etcdctl --endpoints=192.168.232.10:2379 compact 1012
	compacted revision 1012

	root@etcd-1:~# curl -s 192.168.232.10:2379/metrics | grep last
	# HELP etcd_debugging_mvcc_db_compaction_last The unix time since the last db compaction.  Resets to 0 on start.
	# TYPE etcd_debugging_mvcc_db_compaction_last gauge
	etcd_debugging_mvcc_db_compaction_last 1.595873939e+09
```
2020-08-26 16:27:10 -07:00
..
backend
backend: Create base type for readTx and concurrentReadTx (#11976)
2020-06-25 10:26:17 -07:00
mvccpb
*: revert "internal/mvcc" change
2018-02-26 17:11:40 -08:00
doc.go
*: revert "internal/mvcc" change
2018-02-26 17:11:40 -08:00
index_bench_test.go
mvcc: Clone the key index for compaction and lock on each item
2018-04-18 13:29:27 -07:00
index_test.go
mvcc: fix error log typo
2020-01-17 17:27:04 +08:00
index.go
mvcc: push down RangeOptions.limit argv into index tree
2020-06-09 01:11:06 +08:00
key_index_test.go
mvcc: add more structured logging
2018-05-04 13:15:51 -07:00
key_index.go
mvcc: remove capnslog
2020-02-07 07:44:44 -08:00
kv_test.go
mvcc: push down RangeOptions.limit argv into index tree
2020-06-09 01:11:06 +08:00
kv_view.go
go.mod: use go.etcd.io/etcd/v3 versioning
2020-04-28 00:57:35 +00:00
kv.go
go.mod: use go.etcd.io/etcd/v3 versioning
2020-04-28 00:57:35 +00:00
kvstore_bench_test.go
go.mod: use go.etcd.io/etcd/v3 versioning
2020-04-28 00:57:35 +00:00
kvstore_compaction_test.go
go.mod: use go.etcd.io/etcd/v3 versioning
2020-04-28 00:57:35 +00:00
kvstore_compaction.go
mvcc: Export a "Last DB compaction" timestamp metric (#12176)
2020-08-26 16:27:10 -07:00
kvstore_test.go
mvcc: push down RangeOptions.limit argv into index tree
2020-06-09 01:11:06 +08:00
kvstore_txn.go
mvcc: push down RangeOptions.limit argv into index tree
2020-06-09 01:11:06 +08:00
kvstore.go
Merge pull request #11817 from tangcong/fix-mvcc-deadlock-bug
2020-05-07 16:03:45 -07:00
metrics_txn.go
go.mod: use go.etcd.io/etcd/v3 versioning
2020-04-28 00:57:35 +00:00
metrics.go
mvcc: Export a "Last DB compaction" timestamp metric (#12176)
2020-08-26 16:27:10 -07:00
revision_test.go
*: revert "internal/mvcc" change
2018-02-26 17:11:40 -08:00
revision.go
Doc: Fix typo in revision.go
2019-05-16 14:29:10 +01:00
util.go
go.mod: use go.etcd.io/etcd/v3 versioning
2020-04-28 00:57:35 +00:00
watchable_store_bench_test.go
go.mod: use go.etcd.io/etcd/v3 versioning
2020-04-28 00:57:35 +00:00
watchable_store_test.go
go.mod: use go.etcd.io/etcd/v3 versioning
2020-04-28 00:57:35 +00:00
watchable_store_txn.go
go.mod: use go.etcd.io/etcd/v3 versioning
2020-04-28 00:57:35 +00:00
watchable_store.go
mvcc: chanLen 1024 is to biger,and it used more memory. (#11987)
2020-06-10 14:35:48 -07:00
watcher_bench_test.go
go.mod: use go.etcd.io/etcd/v3 versioning
2020-04-28 00:57:35 +00:00
watcher_group.go
go.mod: use go.etcd.io/etcd/v3 versioning
2020-04-28 00:57:35 +00:00
watcher_test.go
go.mod: use go.etcd.io/etcd/v3 versioning
2020-04-28 00:57:35 +00:00
watcher.go
go.mod: use go.etcd.io/etcd/v3 versioning
2020-04-28 00:57:35 +00:00