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Fix local cluster leaking memory.

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Local cluster is leaking memory due to mutation detector being enabled.
In addition there is no warning in the logs that this could be the
issue.
Added a log warning when this feature is enabled to make debugging this
issue easier for other cases of this.
Fixed import ordering as per @liggitt
This commit is contained in:
Walter Fender 2018-03-06 13:03:30 -08:00
parent 86ca3afb4d
commit 07ba609b50
2 changed files with 7 additions and 3 deletions
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7
hack/local-up-cluster.sh
View File

@ -90,8 +90,9 @@ AUTH_ARGS=${AUTH_ARGS:-""}
# Install a default storage class (enabled by default)
DEFAULT_STORAGE_CLASS=${KUBE_DEFAULT_STORAGE_CLASS:-true}
# start the cache mutation detector by default so that cache mutators will be found
KUBE_CACHE_MUTATION_DETECTOR="${KUBE_CACHE_MUTATION_DETECTOR:-true}"
# Do not run the mutation detector by default on a local cluster.
# It is intended for a specific type of testing and inherently leaks memory.
KUBE_CACHE_MUTATION_DETECTOR="${KUBE_CACHE_MUTATION_DETECTOR:-false}"
export KUBE_CACHE_MUTATION_DETECTOR
# panic the server on watch decode errors since they are considered coder mistakes
@ -1037,4 +1038,4 @@ if [[ "${KUBETEST_IN_DOCKER:-}" == "true" ]]; then
cluster/kubectl.sh config set-credentials myself --client-key=/var/run/kubernetes/client-admin.key --client-certificate=/var/run/kubernetes/client-admin.crt
cluster/kubectl.sh config set-context local --cluster=local --user=myself
cluster/kubectl.sh config use-context local
fi
fi

3
staging/src/k8s.io/client-go/tools/cache/mutation_detector.go vendored
View File

@ -24,6 +24,8 @@ import (
"sync"
"time"
"github.com/golang/glog"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/util/diff"
)
@ -43,6 +45,7 @@ func NewCacheMutationDetector(name string) CacheMutationDetector {
if !mutationDetectionEnabled {
return dummyMutationDetector{}
}
glog.Warningln("Mutation detector is enabled, this will result in memory leakage.")
return &defaultCacheMutationDetector{name: name, period: 1 * time.Second}
}