On 21 May 2014 02:52, Ryan Wilson <wr...@nicira.com> wrote: > When adding support for Openflow group and bucket stats, a group entry is > added > to the xlate cache. If the group is removed from ofproto configuration, we > need > to guarantee the group exists in the case where stats are attributed to the > group by a handler thread and the xlate cache has not yet been cleared by a > revalidator thread.
A bit more accurate would be: "When adding support for OpenFlow group and bucket stats, a group entry is added to the xlate_cache. If the main thread removes the group from an ofproto, we need to guarantee that remains accessible to users of the xlate_cache, as the xlate_cache will not be cleaned up until the corresponding datapath flows are revalidated." (Reiterating, on current master the handler threads don't handle xlate_cache at all, although I'm working on changing this)
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