Test by enabling consistent list from cache in storage version migrator stress test that uses
conversion webhook that bottlenects events comming to watch cache.
Set concurrency to 10, based on maximum/average transform latency when
running stress test. In my testing max was about 60-100ms, while average
was 6-10ms.
Kubernetes-commit: bb686f203308481bcd7808f767171cdef27e12a0
- ensure we add all the staging modules so the _test files in there are "loaded"
- use build tags to skip tests that fail to build in specific os/arch pairs
Signed-off-by: Davanum Srinivas <davanum@gmail.com>
Co-Authored-By: Tim Hockin <thockin@google.com>
Kubernetes-commit: c230a45383c372e3861de3d4854cdfe28f4c482f
For request like '/api/v1/watch/namespaces/*', don't set scope.namespace.
Because the func `addWatcher` add a watcher to allWatchers with the value `scope.namespace` not empty.
But the function `dispatchEvent` dispatch event with an empty namespace.
Signed-off-by: xyz-li <hui0787411@163.com>
Kubernetes-commit: 818fabe37b3fd7cebe36a43244120388977373cd
* apiserver/storage/continue: intro PrepareContinueToken
PrepareContinueToken prepares optional
parameters for retrieving additional results for a paginated request.
This function sets up parameters that a client can use to fetch the remaining results
from the server if they are available.
* apiserver/storage/etcd3: refactor to use PrepareContinueToken
Kubernetes-commit: efef32652af0af08a0b9c9bc547a4dce4a95f9f5
For case of SendInitialEvents, a buffer of objects is created. That
process takes a significant amount of memory and CPU when the resource
is of a large volume. Many objects may be not relevant when key is provided.
This commit applies key when composing the buffer for SendInitialEvents.
Signed-off-by: Eric Lin <exlin@google.com>
Kubernetes-commit: d9c6c8aa5047d724e0ebc8907f5fee4b10012ae3
The internal informer populates the RV as soon as it conducts
The first successful sync with the underlying store.
The cache must wait until this first sync is completed to be deemed ready.
Since we cannot send a bookmark when the lastProcessedResourceVersion is 0,
we poll aggressively for the first list RV before entering the dispatch loop.
Kubernetes-commit: a20abdb1f425b215ce969ef7114281741fce249d
There is no benefit of having RWMutex as we have one reader and multiple
writers. In such cases RWMutex has worse performance than Mutex.
Kubernetes-commit: 544ea424826ef60d703c5f4fb91b2c6a95f303aa
Signal is not needed as we never need to wake up when the waiting
is lowered, only when increased.
Kubernetes-commit: e6b54149bb42d58301e34872ebbcf2ea4bcfb474
Ticker behaves differently from what we want, we need a stable period
interval, but ticker doesn't provide that. From NewTicker docstring:
```
The ticker will adjust the time interval or drop ticks to make up for slow receivers.
```
Unfortunatelly there is no way to test it as the FakeClock doesn't
follow the real ticker behavior.
Kubernetes-commit: 7c0e9cda461e176959866b9c2d03b00e817e9b76
Lukasz Szaszkiewicz