Guide To Know About 5 Important Topic For Hadoop Technologies 2018



Important Topic of Hadoop  2018 


Big Hadoop report:


There are a lot of data, where traditional systems have been difficult to manage with a value-added system. This is where they have major information on the data they have come to save. Hadoop helps with managing large data and empowers you to use the comparative approach to managing bigger data. It is a very useful method for solving high-volume problems, speed and data.


Hadoop refers to a comprehensive system of open projects that deal with large data. Approximately 4500 machines can be locked to ensure confidence in the data. The comparative method used by Hadoop saves time for a great time.

The role of GoodKeeper in Hadoop:


Zookeeper is a central center for the protection of configuration information, appointments, assignment and delivery of group services.All these types of services are used in formats or by other means used in distributed applications.

Using the zookeeper in Hadoop

Apache Zookeeper is a coordinated service for a distributed application that facilitates the integration of all groups.
The Zookeeper in Hadoop can be seen in a central location where the proposed applications can record data and access the data.

New version:

Apache ZooKeeper Group has announced that the Apache ZooKeeper 3.5.3-beta version is now available! This is the first beta version of the 3.5 series, which covers 77 things,
thirteen that were considered to control.

Here is a summary of




New method:

ZOOKEEPER-2719 Creates the creation of TTL nodes, which is a znode that is not connected to a session and will be cleaned immediately when it occurs.

Security:

ZOOKEEPER-2014 Only the administrative role to reorganize a group should be allowed
ZOOKEEPER-2693 Prevent TWO DOS in wchp / wchc four letter word (4lw)

Crisis problems:

ZOOKEEPER-2383 ZooKeeperServer interactive tour configuration
ZOOKEEPER-2172 Accidental cells when rearranging the new participant code
ZOOKEEPER-2737 NettyServerCnxFactory related if omitted when writing to the channel
ZOOKEEPER-2247 The barber service is not available when the leader can not write the text
ZOOKEEPER-2080 Replacement equipment
ZOOKEEPER-2687 Open the registry when connecting the leading server


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