core: Propagate authority override from LB exactly once #11862
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Setting the authority is only useful when creating a real stream, as there will be a following pick otherwise. In addition, DelayedStream will buffer each call to setAuthority() in a list and we don't want that memory usage. Note that no LBs are using this feature yet, so users would not have been exposed to the memory use. We also needed to setAuthority() when the LB selected a subchannel on the first pick attempt.
kannanjgithub
approved these changes
Jan 30, 2025
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Setting the authority is only useful when creating a real stream, as there will be a following pick otherwise. In addition, DelayedStream will buffer each call to setAuthority() in a list and we don't want that memory usage. Note that no LBs are using this feature yet, so users would not have been exposed to the memory use.
We also needed to setAuthority() when the LB selected a subchannel on the first pick attempt.
I noticed this while reviewing #11851