Distributed Realtime Computation using Apache Stormthe100rabh
?
Storm is a distributed real-time computation system that allows for processing unbounded streams of data. Key concepts in Storm include topologies, streams, spouts, bolts, tuples, tasks, workers, and reliability guarantees. Common design patterns in Storm include streaming joins, batching, caching with fields grouping, streaming top N computations, and using CoordinatedBolt and KeyedFairBolt for distributed RPC applications.
Real-Time Big Data at In-Memory Speed, Using StormNati Shalom
?
The document discusses real-time big data analytics using Storm, Cassandra, and in-memory computing, highlighting their applications in various fields such as social media and financial services. It contrasts the real-time analytics approaches of Facebook and Twitter, emphasizing Storm's capabilities for high-speed processing of streaming data. Additionally, it presents the advantages of in-memory data processing and explores the integration of Storm with various data sources and storage solutions.
Storm – Streaming Data Analytics at Scale - StampedeCon 2014StampedeCon
?
The document discusses stream processing with Apache Storm, highlighting its capabilities for real-time data integration and low-latency processing in Hadoop environments. Key features include high ingest rates, fault tolerance, and flexibility in processing semantics, making it suitable for various applications such as finance, telecommunications, and manufacturing. The document also outlines the architecture of Apache Storm, including spouts and bolts, and provides guidance on implementing and optimizing streaming workflows.
12. 确保消息被处理
? A tuple isn't acked because the task died: In this case the
spout tuple ids at the root of the trees for the failed tuple will
time out and be replayed.
? Acker task dies: In this case all the spout tuples the acker was
tracking will time out and be replayed.
? Spout task dies: In this case the source that the spout talks to
is responsible for replaying the messages. For
example, queues like Kestrel and RabbitMQ will place all
pending messages back on the queue when a client
disconnects