CurveBS I/O processing flow Before introducing IO processing flow, we first describe the overall architecture, data organization and topology structure of CURVE. CurveBS uses the central the NEBDServer, which affects services in few seconds. CurveBS IO processing flow Overall process The flow of user's read and write request to curve: 1. The user initiates a request (fd=1 6. At last, the Client notifies the user that the request is completed.Chunkserver processing flow CopysetNode is essentially a wrapper around the RAFT algorithm. The Copyset module encapsulates

Data Stream Processing and Analytics Vasiliki (Vasia) Kalavri
 vkalavri@bu.edu Spring 2020 4/09: Flow control and load shedding ??? Vasiliki Kalavri | Boston University 2020 Keeping up with the producers queue: what if the queue grows larger than available memory? • block the producer (back-pressure, flow control) 2 ??? Vasiliki Kalavri | Boston University 2020 Load management approaches 3 ! Load applications with strict latency constraints that can tolerate approximate results. Slow down the flow of data: • The system buffers excess data for later processing, once input rates stabilize.

Synthesis by Conditioning WaveNet on Mel Spectrogram Predictions paper ‣ A flow-based neural network model from the WaveGlow: A Flow-based Generative Network for Speech Synthesis paper. This model script Synthesis by Conditioning WaveNet on Mel Spectrogram Predictions paper ‣ A flow-based neural network model from the WaveGlow: A Flow-based Generative Network for Speech Synthesis paper. This model script Synthesis by Conditioning WaveNet on Mel Spectrogram Predictions paper ‣ A flow-based neural network model from the WaveGlow: A Flow-based Generative Network for Speech Synthesis paper. This model script

step Basic types Practice Next step Collections List Set Map Practice Next step Control flow Conditional expressions Ranges Loops Practice Next step 61 61 61 61 63 63 63 64 64 elements Coroutine scope Asynchronous Flow Representing multiple values Flows are cold Flow cancellation basics Flow builders Intermediate flow operators Terminal flow operators Flows are sequential 931 932 43 Flow context Buffering Composing multiple flows Flattening flows Flow exceptions Exception transparency Flow completion Imperative versus declarative Launching flow Flow and Reactive

vec[index] = 0; // valid vec.clear(); vec[index] = 2; // invalid }Goals – Control Flow Validate based of control flow for: if/else, for loops, etc... void foo() { my_vector vec = { /* ... */ });Control Flow Record and validate control flow enum class control_flow { if_, else_if, for_, return_, /*...*/ }; if (cond) { M::addflow::if_>; } M::addflow::end_scope>;Macro }));Control Flow - Parsing Parse string of code into a control flow enum value constexpr control_flow parse_control(std::string_view str) { if (str == "{") return control_flow::start_scope;

Getting Started Basic Syntax Idioms Coding Conventions Basics Basic Types Packages Control Flow: if, when, for, while Returns and Jumps Classes and Objects Classes and Inheritance Properties Cancellation and Timeouts Composing Suspending Functions Coroutine Context and Dispatchers Asynchronous Flow Channels Exception Handling Shared mutable state and concurrency Select Expression (experimental) Basics Channels Coroutine Context and Dispatchers Shared Mutable State and Concurrency Asynchronous Flow Recommended tutorials: Your �rst coroutine with Kotlin Asynchronous Programming Introduction to

variables (both as 0). 17. var a, b int 18. // A for-loop control flow. 19. for i := 0; i < n; i++ { 20. // An if-else control flow. 21. if rand.Intn(MaxRnd) < MaxRnd/2 { 22. a = a function body, two control flows are used. One is a for loop control flow, which nests the other one, an if-else conditional control flow. Please read basic control flows (§12) for more information about fallthrough, for, goto, if, range, return, select and switch are used to control flow of code. defer and go are also control flow keywords, but in other specific manners. They modify function calls, which we'll

as 0). 17 | var a, b int 18 | // A for-loop control flow. 19 | for i := 0; i < n; i++ { 20 | // An if-else control flow. 21 | if rand.Intn(MaxRnd) < MaxRnd/2 { 22 | function body, two control flows are used. One is a for loop control flow, which nests the other one, an if-else conditional control flow. Please read basic control flows (§12) for more information about fallthrough, for, goto, if, range, return, select and switch are used to control flow of code. defer and go are also control flow keywords, but in other specific manners. They modify function calls, which

is destroyed Stack-based (automatic) data objects • Is symmetry to define state based on control-flow (static lexical scoping) • Edge cases managed by the C++ Standard (Guaranteed!) “The compiler giveth is destroyed Stack-based (automatic) data objects • Is symmetry to define state based on control-flow (static lexical scoping) • Edge cases managed by the C++ Standard (Guaranteed!) “The compiler giveth taketh away” Heap-based (dynamic) data objects • Is symmetry to define state independent of control-flow (static lexical scoping) • Edge cases managed by the developer “The developer giveth, and the developer