Added LatencySample for range read, and traces for slow range reads.

[liquid-helium]

Added LatencySample for range read, and traces for slow range reads.

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[foundationdb-ci]

AWS CodeBuild CI Report for Linux CentOS 7

• CodeBuild project: foundationdb-pr
• Commit ID: cbb38d4fdffc75597f61ced4229058734a70a163
• Result: FAILED
• Error: Error while executing command: cmake -S . -B build_output -D USE_CCACHE=ON -D USE_WERROR=ON -D RocksDB_ROOT=/opt/rocksdb-6.22.1 -D RUN_JUNIT_TESTS=ON -D RUN_JAVA_INTEGRATION_TESTS=ON -G Ninja. Reason: exit status 1
• Build Logs (available for 30 days)

[foundationdb-ci]

AWS CodeBuild CI Report for Linux CentOS 7

• CodeBuild project: foundationdb-pr
• Commit ID: c3fc19cb009e1e5072590b679c88a5fadfd036ad
• Result: FAILED
• Error: reference not found for primary source and source version c3fc19cb009e1e5072590b679c88a5fadfd036ad
• Build Logs (available for 30 days)

[foundationdb-ci]

AWS CodeBuild CI Report for macOS Catalina 10.15

• CodeBuild project: foundationdb-pr-macos
• Commit ID: c3fc19cb009e1e5072590b679c88a5fadfd036ad
• Result: FAILED
• Error: reference not found for primary source and source version c3fc19cb009e1e5072590b679c88a5fadfd036ad
• Build Logs (available for 30 days)

[fdb-windows-ci]

Doxense CI Report for Windows 10

• Commit ID: cbb38d4fdffc75597f61ced4229058734a70a163
• Result: SUCCEEDED
• Build Logs (available dor 30 days)

[sfc-gh-abeamon]

https://github.com/apple/foundationdb/pull/8173 was just merged that adds a latency sample for range reads measured in the same way as the existing read latency sample. Does that supersede this?

[jzhou77]

@liquid-helium, the other PR https://github.com/apple/foundationdb/pull/8173 also added the LatencySample. Maybe you can add your logic on top of that PR?