Sweetwater Trestle – El Cajon Valley – 85′ high. Often people would take thrilling boat rides down the flume. Los Coches Trestle – longest on the line. Spreckles, with the result that Babcock and Spreckles determined to develop their own supply of water for the city. Sefton, later President of the company, and F. sold water to the city of San Diego for many years. Picture taken on Highway 80 near the old Chase Ranch in El Cajon.Ī total of 315 trestles carried the flume across valleys, canyons and ravines - the longest being the Los Coches trestle, 1774 feet in length and 56 feet high. The longest of the five tunnels was the Lankersheim Tunnel which extended for 1,900 feet. Empty wagons pull off the road to let the loaded ones pass. Freight wagons haul lumber for the building of the Flume line. Many local men were employed in the construction of the dam and also as “flume walkers” to check for leaks. Later, La Mesa Dam was built and used until Murray Dam was constructed in 1916. Distribution lines furnished water to Lakeside and other communities. The flume water went on to Grossmont where there was a small diverting dam known as Eucalyptus Reservoir. The diverting dam where the water was diverted into the 37 mile flume line to the El Cajon valley was finished in 1888. was incorporated and the Cuyamaca earthen dam was built. Construction of the flume was begun. Redwood lumber was brought by boat to San Diego harbor, cut to the required lengths and loaded on wagons for the trip inland. Over 800 mules and horses, and 100 wagons were required to transport the nearly 9 million board feet redwood used on this project. Using Flume, we can get the data from multiple servers immediately into Hadoop.Īlong with the log files, Flume is also used to import huge volumes of event data produced by social networking sites like Facebook and Twitter, and e-commerce websites like Amazon and Flipkart.įlume supports a large set of sources and destinations types.įlume supports multi-hop flows, fan-in fan-out flows, contextual routing, etc.In 1885 the only source of water for the watering of small gardens and orchards was wells with windmills.
Some of the notable features of Flume are as follows −įlume ingests log data from multiple web servers into a centralized store (HDFS, HBase) efficiently. It guarantees reliable message delivery.įlume is reliable, fault tolerant, scalable, manageable, and customizable. The transactions in Flume are channel-based where two transactions (one sender and one receiver) are maintained for each message. When the rate of incoming data exceeds the rate at which data can be written to the destination, Flume acts as a mediator between data producers and the centralized stores and provides a steady flow of data between them.įlume provides the feature of contextual routing. Using Apache Flume we can store the data in to any of the centralized stores (HBase, HDFS). Here, Apache Flume comes to our rescue.įlume is used to move the log data generated by application servers into HDFS at a higher speed. To do so, they would need to move the available log data in to Hadoop for analysis. Applications of FlumeĪssume an e-commerce web application wants to analyze the customer behavior from a particular region. It is principally designed to copy streaming data (log data) from various web servers to HDFS. Apache Flume is a tool/service/data ingestion mechanism for collecting aggregating and transporting large amounts of streaming data such as log files, events (etc.) from various sources to a centralized data store.įlume is a highly reliable, distributed, and configurable tool.
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