Prefetch buffer may not contain all of requested data if EOF is hit #4307

Job	Run time
build-linux-cmake-with-folly	28m 16s
build-linux	16m 57s
build-linux-cmake-with-folly-lite-no-test	7m 20s
build-linux-cmake-mingw	11m 45s
build-linux-make-with-folly	28m 9s
check-format-and-targets	25s
build-examples	10m 19s
build-fuzzers	8m 36s
build-linux-clang-no_test_run	12m 59s
build-linux-cmake-with-benchmark	18m 58s
build-linux-encrypted_env-no_compression	15m 55s
build-linux-cmake-with-folly-coroutines	31m 59s
build-linux-make-with-folly-lite-no-test	9m 34s
build-linux-release	14m 9s
build-linux-release-rtti	11m 55s
build-linux-clang10-asan	17m 12s
build-linux-clang10-clang-analyze	18m 0s
build-linux-clang10-ubsan	16m 57s
build-linux-clang-13-no_test_run	7m 31s
build-linux-gcc-10-cxx20-no_test_run	9m 41s
build-linux-gcc-11-no_test_run	10m 4s
build-linux-gcc-8-no_test_run	8m 43s
build-linux-mini-crashtest	29m 7s
build-linux-unity-and-headers	13m 9s
build-linux-arm	14m 31s
build-linux-clang13-mini-tsan	21m 55s
build-linux-java	14m 45s
build-linux-java-pmd	11m 29s
build-linux-java-static	10m 54s
build-linux-static_lib-alt_namespace-status_checked	18m 17s
build-macos	18m 44s
build-macos-cmake (true)	43m 48s
build-macos-cmake (false)	42m 30s
build-macos-java	16m 55s
build-macos-java-static	22m 19s
build-macos-java-static-universal	25m 15s
build-windows-vs2019	57m 3s
	11h 16m 5s

Provide feedback