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release-2.1: changefeed performance debugging #32872

merged 2 commits into from Dec 7, 2018


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danhhz commented Dec 5, 2018


  • 1/1 commits from "changefeedccl: add metrics for performance debugging" (#32241)
  • 1/1 commits from "changefeedccl: add logs for slow ExportRequests and frontier spans" (#32728)

Please see individual PRs for details.

/cc @cockroachdb/release

danhhz added some commits Nov 13, 2018

changefeedccl: add metrics for performance debugging
I've been running a branch with a bunch of extra metrics while debugging
issue #32104. PR'ing the ones that have proven useful in case someone
has performance issues in the wild.

Release note (enterprise change): Added timeseries metrics for debugging
CHANGEFEED performance issues.
changefeedccl: add logs for slow ExportRequests and frontier spans
The metrics added in #32241 are great for monitoring the health of a
changefeed and roughly debugging performance issues. Many of the ones
I've been seeing in testing have been one or many spans being behind, so
add some debug logging with details on the keys and lag, which then
allows for more targeted investigation.

Release note: None

@danhhz danhhz requested a review from mrtracy Dec 5, 2018

@danhhz danhhz requested review from cockroachdb/core-prs as code owners Dec 5, 2018


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cockroach-teamcity commented Dec 5, 2018

This change is Reviewable


mrtracy approved these changes Dec 6, 2018

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Reviewable status: :shipit: complete! 0 of 0 LGTMs obtained

@danhhz danhhz merged commit 1d5c68b into cockroachdb:release-2.1 Dec 7, 2018

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GitHub CI (Cockroach) TeamCity build finished
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@danhhz danhhz deleted the danhhz:backport2.1-32241-32728 branch Dec 7, 2018

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