https://bz.apache.org/bugzilla/show_bug.cgi?id=65460

Mark Thomas <ma...@apache.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #14 from Mark Thomas <ma...@apache.org> ---
Found it. There is a regression in the previous release.

If using async IO (available and default in 9.x and 10.x) small updates to the
connection flow control window were dropped. The window slowly reduced in size
until no more data could be read.

If not using async IO, small updates to the connection flow control window are
written but not flushed so at worst, you'll see a small delay.

Setting overheadWindowUpdateThreshold="0" avoids the issue with or without
async IO.

Fixed in:
- 10.1.x for 10.1.0-M3 onwards
- 10.0.x for 10.0.9 onwards
- 9.0.x for 9.0.51 onwards
- 8.5.x for 8.5.70 onwards

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