How do you choose a topic for a review paper?

Selecting a Topic

brainstorm for ideas.
choose a topic that will enable you to read and understand the literature.
ensure that the topic is manageable and that material is available.
make a list of key words.
be flexible.
define your topic as a focused research question.
research and read more about your topic.

What are the best topics for speech?

It’s not easy picking a topic for your speech as there are many options so consider the following factors when deciding.

Health.
Law and politics.
Media.
Religion.
Science and the environment.
Sports.
Technology.
World peace. What is the safest country in the world?

How do I get a list of topics in Kafka?

To start the kafka: $ nohup ~/kafka/bin/kafka-server-start.sh ~/kafka/config/server.properties > ~/kafka/kafka.log 2>&1 &
To list out all the topic on on kafka; $ bin/kafka-topics.sh –list –zookeeper localhost:2181.
To check the data is landing on kafka topic and to print it out;

What Kafka topics?

Kafka Topic. A Topic is a category/feed name to which records are stored and published. As said before, all Kafka records are organized into topics. Producer applications write data to topics and consumer applications read from topics.

How do I view messages in Kafka topic?

Viewing messages in Kafka and IBM Event Stream topic

Log in to the IBM Event Streams console.
Select Topic > ibm-bai-ingress > Messages.
Select a date.
The messages are listed according to time stamps.

How do I check Kafka status?

If you are looking for the Kafka cluster broker status, you can use zookeeper cli to find the details for each broker as given below: ls /brokers/ids returns the list of active brokers IDs on the cluster. get /brokers/ids/ returns the details of the broker with the given ID.

How do I know if Kafka consumer is running?

4 Answers. You can use consumer. assignment() , it will return set of partitions and verify whether all of the partitions are assigned which are available for that topic.

How do I get a list of brokers in Kafka?

Once you install(unzip) the standalone Zookeeper,then:

Run the Zookeeper CLI: $ zookeeper/bin/zkCli.sh -server localhost:2181 #Make sure your Broker is already running.
If it is successful, you can see the Zk client running as:

How do I check zookeeper status?

Zookeeper process runs on infra VM’s.
To start the zookeeper service use command: /usr/share/zookeeper/bin/zkServer.sh start.
To check whether process is running: ps -ef | grep zookeeper.
Errorlogs can be checked in Infra nodes: /var/log/zookeeper/zookeeper.log.
Check the free memory: free -mh.

What is Zkcli sh?

zkCli.sh has been support process commands after 3.4.7. https://issues.apache.org/jira/browse/ZOOKEEPER-1897. such as: ./zkCli.sh -server xxxxx:2181 get /test. zkcli, a golang cli for zookeeper, https://github.com/go-zkcli/zkcli, also a simple solution. zkcli –servers srv-1,srv-2,srv-3 create /demo_only some_value.

How do I start my own ZooKeeper?

Installation

Download ZooKeeper from here.
Unzip the file.
The zoo.
The default listen port is 2181.
The default data directory is /tmp/data.
Go to the bin directory.
Start ZooKeeper by executing the command ./zkServer.sh start .
Stop ZooKeeper by stopping the command ./zkServer.sh stop .

How do I access ZooKeeper console?

ZooKeeper Command Line Interface (CLI)

To perform ZooKeeper CLI operations, first start your ZooKeeper server and then, ZooKeeper client by “bin/zkCli.sh”.
From here, you can try a few commands to get a feel for this simple command line interface.
Next, create a new znode by running create /zk_test my_data.

How do I find ZooKeeper logs?

Logs file path

: /var/log/zookeeper/zookeeper*.log.
/var/log/zookeeper*.log.
: C:\zookeeper*\logs\zookeeper*.log.

What is ZooKeeper ZNode?

The term ZNode is referred to every node in a ZooKeeper tree. The main purpose of the Znode is to maintain a stat structure. Also, a stat structure includes timestamps in it. Hence, timestamps and the version number together permits ZooKeeper to validate the cache as well as to coordinate updates.

What is ZooKeeper client?

ZooKeeper is a replicated service spread over a number of servers called an ensemble. ZooKeeper nodes store their data in a hierarchical name space, much like a file system or a tree data structure. Clients can read from and write to the nodes and in this way have a shared configuration service.

Who uses Apache ZooKeeper?

Who uses Apache Zookeeper?

Company	Website	Country
DATA Inc.	datainc.biz	United States
LivePerson Inc	liveperson.com	United States
Davita Inc	davita.com	United States
3M Co	3m.com	United States

Is ZooKeeper a load balancer?

It means that Zookeeper is understanding Load Balancer as a client and it’s tryong to stablish a connection with it. But the Load Balancer just pings TCP 2181 and comes out.

What is guaranteed by ZooKeeper?

Which of the guarantee is provided by Zookeeper? Explanation: Once an update has been applied, it will persist from that time forward until a client overwrites the update. Explanation: ZooKeeper supports the concept of watches. Clients can set a watch on a znodes.

Why is ZooKeeper used?

Why Do We Need Apache Zookeeper? Apache ZooKeeper is used for maintaining centralized configuration information, naming, providing distributed synchronization, and providing group services in a simple interface so that we don’t have to write it from scratch. Apache Kafka also uses ZooKeeper to manage configuration.

What was Hadoop named after?

Some of these are: Jeffrey Dean, Sanjay Ghemawat (2004) MapReduce: Simplified Data Processing on Large Clusters, Google. This paper inspired Doug Cutting to develop an open-source implementation of the Map-Reduce framework. He named it Hadoop, after his son’s toy elephant.

Which statement is false about Hadoop?

Which statement is false about Hadoop: 1. It runs with commodity hardware.

What are the four V’s of big data?

The Four V’s of Big Data IBM data scientists break big data into four dimensions: volume, variety, velocity and veracity.