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Nt1330 Unit 3 System Analysis

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Level 1: Chubby File: has the root tablet details. Level 2: Root Tablet: Has a metadata that stores the location of all metadata tablet locations Level 3: Metadata Tablet: It has the location of each tablet. It also has extra information about tablets for analysis and debugging Locating the tablet can be either done by • Master table which contains all the data of the whereabouts of the table. The issue with this approach is that as there is only one master server it can be overloaded with the requests. • It can also be done by having a separate table that just has the data about the locations of the tablets. This is called the metadata tablet. Tablet Server: A tablet server serves a tablet, each of which is a collection of rows. Where even …show more content…

Clusters are arranged so that they will improve speed and reliability. Scheduling is matching a task to the resources at particular time. Google uses cluster management term which includes the allocation of recourses to different application. GFS: Google File System is a distributed file system which is developed by Google in order to provide efficient, reliable access to data. . It is designed and implemented inorder to meet the requirements provided by Google’s data processing. The file system consists of hundreds of storage machines to provide inexpensive parts and it is accessed by different client machines. Here the search engine is providing huge amounts data that should be stored. GFS has 1,000 nodes with 300TB disk storage. Lock Service: The Lock Service is nothing but Chubby. The main usage of lock service is loosely-coupled distributed system. It also have large number of small machines which are intended to connect. The main purpose of lock service is to allow clients to communicate their activities and come to a common point about their environment. The important goals of lock service is reliability, availability to a large number of clients, and also provide easy-to-understand semantics. Chubby’s interface is similar to simple file system which performs file reads and

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