Ownership is measured by how many commits each author made to each file in the current tree. It highlights bus-factor risk (files only one person has ever touched) and where knowledge is concentrated. The bus factor is the smallest number of people who are, between them, primary owner of more than half of the files.
Files only one author has ever changed. The more a file has changed, the more knowledge is at risk if that person leaves.
| File | Sole owner | Commits |
|---|---|---|
| pkg/kube/kubetypes/types.go | John Howard | 7 |
| pkg/kube/kclient/clienttest/test_helpers.go | John Howard | 7 |
| BUGS-AND-FEATURE-REQUESTS.md | Martin Taillefer | 7 |
| pkg/kube/krt/util.go | John Howard | 6 |
| tools/istio-nftables/pkg/capture/run.go | Sridhar Gaddam | 6 |
| pilot/pkg/config/kube/gatewaycommon/classinfo.go | Jackie Maertens | 6 |
| pkg/test/framework/components/echo/services.go | Nathan Mittler | 6 |
| pkg/kube/krt/static_test.go | John Howard | 5 |
| operator/cmd/mesh/testdata/profile-dump/input/all_off.yaml | John Howard | 5 |
| licenses/go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/LICENSE | John Howard | 4 |
| File | Sole owner | Commits |
|---|---|---|
| pkg/kube/kubetypes/types.go | John Howard | 7 |
| pkg/kube/kclient/clienttest/test_helpers.go | John Howard | 7 |
| BUGS-AND-FEATURE-REQUESTS.md | Martin Taillefer | 7 |
| pkg/kube/krt/util.go | John Howard | 6 |
| tools/istio-nftables/pkg/capture/run.go | Sridhar Gaddam | 6 |
| pilot/pkg/config/kube/gatewaycommon/classinfo.go | Jackie Maertens | 6 |
| pkg/test/framework/components/echo/services.go | Nathan Mittler | 6 |
| pkg/kube/krt/static_test.go | John Howard | 5 |
| operator/cmd/mesh/testdata/profile-dump/input/all_off.yaml | John Howard | 5 |
| licenses/go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/LICENSE | John Howard | 4 |
| pilot/pkg/config/kube/ingress/testdata/simple.yaml | John Howard | 4 |
| licenses/github.com/munnerz/goautoneg/LICENSE | John Howard | 4 |
| pkg/kube/multicluster/collections.go | Sebastian Schepens | 4 |
| common/scripts/fix_copyright_banner.sh | Istio Automation | 3 |
| pilot/pkg/config/kube/gateway/testdata/mix-backend-policy.yaml | John Howard | 3 |
| pilot/pkg/config/kube/gateway/testdata/mix-backend-policy.yaml.golden | John Howard | 3 |
| pkg/config/mesh/meshwatcher/networks.go | John Howard | 3 |
| pkg/monitoring/gauge.go | John Howard | 3 |
| pkg/test/failer_test.go | John Howard | 3 |
| tools/docker-builder/builder/tar.go | John Howard | 3 |
| pilot/pkg/xds/testdata/benchmarks/tls.yaml | John Howard | 3 |
| tests/integration/pilot/testdata/traffic-shifting.yaml | John Howard | 3 |
| manifests/addons/dashboards/lib/panels.libsonnet | John Howard | 3 |
| licenses/github.com/felixge/httpsnoop/LICENSE.txt | John Howard | 3 |
| licenses/sigs.k8s.io/apiserver-network-proxy/konnectivity-client/LICENSE | John Howard | 3 |
| pilot/pkg/xds/vm_test.go | John Howard | 3 |
| tools/go-compile-verbose | John Howard | 3 |
| licenses/github.com/miekg/dns/LICENSE | John Howard | 3 |
| pilot/pkg/config/kube/ingress/testdata/tls.yaml | John Howard | 3 |
| pkg/channels/unbounded.go | John Howard | 3 |
| pilot/test/xdstest/test.go | John Howard | 3 |
| tools/go-ordered-test | John Howard | 3 |
| tools/go-stress-test | John Howard | 3 |
| licenses/github.com/klauspost/compress/s2/cmd/internal/readahead/LICENSE | John Howard | 3 |
| pkg/test/framework/resource/matcher.go | John Howard | 3 |
| pkg/test/framework/resource/matcher_test.go | John Howard | 3 |
| operator/pkg/util/label.go | John Howard | 3 |
| releasenotes/notes/auto-sni-support.yaml | Faseela K | 3 |
| pilot/pkg/serviceregistry/ambient/nodes.go | Sebastian Schepens | 3 |
| releasenotes/notes/52877.yaml | Steven Jin | 3 |
| tools/istio-nftables/pkg/README.md | Sridhar Gaddam | 3 |
| tools/istio-nftables/pkg/capture/run_test.go | Sridhar Gaddam | 3 |
| tools/istio-nftables/pkg/constants/constants.go | Sridhar Gaddam | 3 |
| tools/istio-nftables/pkg/capture/testdata/dns-uid-gid.golden | Sridhar Gaddam | 3 |
| tools/istio-nftables/pkg/capture/testdata/inbound-ports-tproxy.golden | Sridhar Gaddam | 3 |
| tools/istio-nftables/pkg/capture/testdata/inbound-ports-wildcard-tproxy.golden | Sridhar Gaddam | 3 |
| tools/istio-nftables/pkg/capture/testdata/ip-range.golden | Sridhar Gaddam | 3 |
| tools/istio-nftables/pkg/capture/testdata/loopback-outbound-iprange.golden | Sridhar Gaddam | 3 |
| tools/istio-nftables/pkg/capture/testdata/tproxy.golden | Sridhar Gaddam | 3 |
| releasenotes/notes/46846.yaml | Keith Mattix II | 3 |
| pkg/platform/platform.go | Jonh Wendell | 3 |
| tools/istio-iptables/pkg/capture/helper.go | Leonardo Sarra | 3 |
| cni/pkg/ipset/ipset.go | Ben Leggett | 3 |
| cni/pkg/ipset/nldeps_mock.go | Ben Leggett | 3 |
| prow/config/topology/external-istiod.json | Frank Budinsky | 3 |
| pkg/test/framework/components/echo/config/sources.go | Nathan Mittler | 3 |
| pkg/test/framework/components/jwt/server.go | Nathan Mittler | 3 |
| pkg/test/framework/components/authz/server.go | Nathan Mittler | 3 |
| pkg/http/headers/wellknown.go | Nathan Mittler | 3 |
| tests/integration/security/fuzz/README.md | Yangmin Zhu | 3 |
| releasenotes/notes/25519.yaml | Brian Avery | 3 |
| releasenotes/notes/add-release-notes-generation.yaml | Brian Avery | 3 |
| common/config/sass-lint.yml | Martin Taillefer | 3 |
| common/config/tslint.json | Martin Taillefer | 3 |
| common/scripts/lint_copyright_banner.sh | Martin Taillefer | 3 |
| security/tools/deb/description | Tao Li | 3 |
| common/scripts/format_go.sh | Istio Automation | 2 |
| pkg/lazy/lazy.go | John Howard | 2 |
| pkg/kube/krt/files/files_test.go | John Howard | 2 |
| licenses/go.opentelemetry.io/otel/exporters/otlp/otlptrace/LICENSE | John Howard | 2 |
| licenses/go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc/LICENSE | John Howard | 2 |
| licenses/go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp/LICENSE | John Howard | 2 |
| licenses/go.opentelemetry.io/otel/LICENSE | John Howard | 2 |
| licenses/go.opentelemetry.io/otel/metric/LICENSE | John Howard | 2 |
| licenses/go.opentelemetry.io/otel/sdk/LICENSE | John Howard | 2 |
| licenses/go.opentelemetry.io/otel/sdk/metric/LICENSE | John Howard | 2 |
| licenses/go.opentelemetry.io/otel/trace/LICENSE | John Howard | 2 |
| tools/proto/buf.yaml | John Howard | 2 |
| pilot/pkg/config/kube/gateway/testdata/mix-backend-policy.status.yaml.golden | John Howard | 2 |
| pkg/kube/inject/testdata/inject/hello-host-network.yaml.injected | John Howard | 2 |
| licenses/go.opentelemetry.io/otel/exporters/prometheus/LICENSE | John Howard | 2 |
| pilot/pkg/config/kube/gateway/leak_test.go | John Howard | 2 |
| pkg/config/mesh/meshwatcher/mesh_test.go | John Howard | 2 |
| pkg/workloadapi/security/authorization_json.gen.go | John Howard | 2 |
| tools/proto/buf.golang-json.yaml | John Howard | 2 |
| pkg/kube/inject/testdata/inject/deploymentconfig-with-canonical-service-label.yaml | John Howard | 2 |
| operator/pkg/render/postprocess.go | John Howard | 2 |
| pkg/monitoring/counter.go | John Howard | 2 |
| pkg/monitoring/distribution.go | John Howard | 2 |
| licenses/golang.org/x/term/LICENSE | John Howard | 2 |
| operator/pkg/install/wait.go | John Howard | 2 |
| pilot/pkg/xds/testdata/benchmarks/auto.yaml | John Howard | 2 |
| pilot/pkg/xds/testdata/benchmarks/disabled.yaml | John Howard | 2 |
| pilot/pkg/xds/testdata/benchmarks/externalname.yaml | John Howard | 2 |
| pilot/pkg/xds/testdata/benchmarks/gateways-shared.yaml | John Howard | 2 |
| pilot/pkg/xds/testdata/benchmarks/http.yaml | John Howard | 2 |
| pilot/pkg/xds/testdata/benchmarks/knative-gateway.yaml | John Howard | 2 |
| pilot/pkg/xds/testdata/benchmarks/strict.yaml | John Howard | 2 |
| pilot/pkg/xds/testdata/benchmarks/tcp.yaml | John Howard | 2 |
| tests/integration/ambient/testdata/automtls-partial-sidecar-dr-disable.yaml | John Howard | 2 |
Primary owner = the author with the most commits to a file. Solely owned = files only that author has touched.
| Author | Files owned | Solely owned | Files touched |
|---|---|---|---|
| John Howard | 1,916 | 603 | 3,085 |
| Xiaopeng Han | 310 | 202 | 591 |
| zirain | 308 | 144 | 928 |
| Rama Chavali | 213 | 103 | 724 |
| Nathan Mittler | 209 | 52 | 693 |
| Steven Jin | 181 | 31 | 720 |
| Ben Leggett | 153 | 101 | 486 |
| Martin Taillefer | 129 | 4 | 314 |
| Sebastian Schepens | 120 | 84 | 428 |
| Tiger Xu / Zhonghu Xu | 116 | 55 | 693 |
| Yangmin Zhu | 110 | 36 | 243 |
| Petr McAllister | 106 | 75 | 290 |
| Sridhar Gaddam | 103 | 85 | 210 |
| Steven Landow | 102 | 47 | 446 |
| jacob-delgado | 92 | 31 | 359 |
| Mitch Connors | 89 | 42 | 317 |
| my-git9 | 81 | 52 | 173 |
| Jackie Maertens | 78 | 44 | 259 |
| Ian Rudie | 77 | 66 | 354 |
| Keith Mattix II | 64 | 41 | 402 |
| Jacek Ewertowski | 59 | 51 | 352 |
| Faseela K | 57 | 55 | 324 |
| Kuat | 56 | 26 | 383 |
| Leonardo Sarra | 54 | 24 | 262 |
| Pengyuan Bian | 43 | 32 | 319 |
Files touched by the most people — shared code where changes are most likely to need coordination.
| File | Contributors | Primary owner | Owner share |
|---|---|---|---|
| go.mod | 128 | Istio Automation | 63.3% |
| go.sum | 121 | Istio Automation | 65.3% |
| pilot/pkg/bootstrap/server.go | 114 | John Howard | 18.7% |
| pilot/pkg/features/pilot.go | 92 | John Howard | 30.9% |
| pkg/config/validation/validation.go | 92 | John Howard | 27.1% |
| pilot/pkg/model/context.go | 84 | John Howard | 21.4% |
| pilot/pkg/model/push_context.go | 82 | John Howard | 26.5% |
| pkg/config/validation/validation_test.go | 81 | John Howard | 20.6% |
| Makefile | 79 | Costin Manolache | 16.3% |
| pilot/cmd/pilot-agent/main.go | 75 | John Howard | 19.9% |
| pilot/pkg/model/service.go | 74 | John Howard | 21.0% |
| pilot/pkg/networking/util/util.go | 67 | John Howard | 17.3% |
| Makefile.core.mk | 65 | Istio Automation | 26.4% |
| README.md | 62 | Martin Taillefer | 14.9% |
| istio.deps | 60 | Istio Automation | 90.6% |
| manifests/charts/istio-control/istio-discovery/values.yaml | 60 | John Howard | 23.3% |
| manifests/charts/istio-control/istio-discovery/files/injection-template.yaml | 57 | John Howard | 32.8% |
| operator/cmd/mesh/testdata/manifest-generate/output/all_on.golden-show-in-gh-pull-request.yaml | 56 | John Howard | 44.9% |
| pilot/pkg/model/config.go | 56 | John Howard | 18.2% |
| pilot/pkg/serviceregistry/kube/controller/controller.go | 55 | John Howard | 27.4% |
How Istio compares with other CNCF graduated projects →
How Istio ranks among CNCF graduated projects by AI-assisted commits →
Generate this report for your own repository with gitstats-action · All Gallery reports
Publishes the report to GitHub Pages on every push to main: turn on Pages for the gh-pages branch.
# .github/workflows/gitstats.yml
name: GitStats Report
on:
push:
branches: [main]
permissions:
contents: write
jobs:
gitstats:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v7
with:
fetch-depth: 0
- uses: shenxianpeng/gitstats-action@v1
with:
deploy-to-pages: true