UPSTREAM: 54257: Use GetByKey() in typeLister_NonNamespacedGet #16986
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The Get() function of non-namespace lister passes a temporary object to
indexer.Get() in order to fetch the actual object from the indexer. This
may cause Go to allocate the temporary object on the heap instead of the
stack, as it is passed into interfaces. For non-namespaced objects,
Get(&Type{ObjectMeta: v1.ObjectMeta{Name: name}}) should be equivalent
to GetByKey(name).
This could be the root cause of excessive allocations, e.g. in tests
clusterRoleLister.Get() has trigger 4 billion allocations. See
openshift#16954
Signed-off-by: Christian Heimes <cheimes@redhat.com>
Signed-off-by: Monis Khan <mkhan@redhat.com>
Signed-off-by: Monis Khan <mkhan@redhat.com>
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/kind bug @eparis want to approve :) ? |
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This was referenced Oct 21, 2017
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/lgtm |
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[APPROVALNOTIFIER] This PR is APPROVED This pull-request has been approved by: enj, smarterclayton The full list of commands accepted by this bot can be found here.
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Automatic merge from submit-queue. |
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The Get() function of non-namespace lister passes a temporary object to indexer.Get() in order to fetch the actual object from the indexer. This may cause Go to allocate the temporary object on the heap instead of the stack, as it is passed into interfaces. For non-namespaced objects, Get(&Type{ObjectMeta: v1.ObjectMeta{Name: name}}) should be equivalent to GetByKey(name).
This could be the root cause of excessive allocations, e.g. in tests clusterRoleLister.Get() has trigger 4 billion allocations.
Signed-off-by: Christian Heimes cheimes@redhat.com
Signed-off-by: Monis Khan mkhan@redhat.com
Fixes #16954
/assign @deads2k @simo5