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The OpenTSDB community continues to grow and with users looking to store massive amounts of time-series data in a scalable manner. In this talk, we will discuss a number of use cases and best practices around naming schemas and HBase configuration. We will also review OpenTSDB 2.0's new features, including the HTTP API, plugins, annotations, millis...
Based on production experience with HBase since 2009, as well as recent benchmark results, this talk from Arista Network's Benoit Sigoure take you through network designs and optimizations for HBase, as well as possible ways to make the network work better for Apache Hadoop/HBase.
This talk introduced OpenTSDB, the open-source, horizontally scalable, time series database built on top of HBase. We showed how its design allows one to easily monitor large clusters of commodity machines at an unprecedented level of granularity. We reviewed how its implementation enables one to store billions of data points and to track orders of...
Context-sensitive languages such as or can be parsed using a context-free but ambiguous grammar, which requires another stage, disambiguation, in order to select the single parse tree that complies with the language's semantical rules. Naturally, large and complex languages induce large and complex disambiguation stages. If, in addition, the parser...
ABSTRACT Abstract Syntax Trees (ASTs) are commonly,used to rep- resent an input/output program in compilers and language processing tools. Many of the tasks of these tools consist in generating and rewriting ASTs. Such an approach can be- come tedious and hard to maintain for complex operations, namely program transformation, optimization, instrume...
Wireless sensor networks are composed of small electronic devices that embed processors, sensors, batteries, memory and communication capabilities. One of the main goals in the design of such systems is the handling of the inherent complexity of the nodes, exacerbated by the huge number of nodes in the network. For these reasons, it becomes very di...
The Transformers project aims at creating a generic framework for C++ source to source transformation. "Source to source" transformation consists in refactoring the code and producing a modified source. The resulting code may be reread, reused, re-modified. . . by pro-grammers and thus must be human-readable. Moreover it should respect the original...