server: add a raft messgae flush metrics#2771
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siddontang merged 3 commits intotikv:masterfrom Mar 1, 2018
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* concurrency_manager: check update_max_ts against a limit (tikv#17917) close tikv#17916 concurrency_manager: add safety boundary for max_ts updates Add `max_ts_limit` to prevent unreasonable timestamp updates. The limit is synchronized with PD timestamp periodically. Configure via max_ts_allowance_secs and max_ts_sync_interval_secs. Updates from PD bypass this limit. Signed-off-by: ekexium <eke@fastmail.com> Co-authored-by: ti-chi-bot[bot] <108142056+ti-chi-bot[bot]@users.noreply.github.com> Signed-off-by: ekexium <eke@fastmail.com> * concurrency_manager: double check via PD TSO before reporting error of invalid max-ts update (tikv#18057) close tikv#18055 concurrency_manager: double check via PD TSO before reporting error of invalid max-ts update Signed-off-by: ekexium <eke@fastmail.com> * concurrency_manager: make max-ts checker more robust (tikv#18080) ref tikv#18055 When validating max-ts updates, do not report error or panic unless confirmed by PD TSO. This reduces both false positive and false negative cases. Signed-off-by: ekexium <eke@fastmail.com> Co-authored-by: ti-chi-bot[bot] <108142056+ti-chi-bot[bot]@users.noreply.github.com> Signed-off-by: ekexium <eke@fastmail.com> * config: rename config items for max-ts checker (tikv#18118) ref tikv#17916 config: rename config items for max-ts checker Signed-off-by: ekexium <eke@fastmail.com> * concurrency-manager: do not assert in concurrency manager (tikv#18329) ref tikv#17916 Do not assert in concurrency manager. Signed-off-by: ekexium <eke@fastmail.com> * delete unexpected files from cherry-picking Signed-off-by: ekexium <eke@fastmail.com> --------- Signed-off-by: ekexium <eke@fastmail.com> Co-authored-by: ti-chi-bot[bot] <108142056+ti-chi-bot[bot]@users.noreply.github.com>
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Add a counter to know the flush frequency.
Will add the Grafana later.
PTAL @ngaut @disksing