apache spark 可以在没有 hadoop 的情况下运行吗？

Question

Are there any dependencies between Spark and Hadoop ?

If not, are there any features I'll miss when I run Spark without Hadoop ?

Answer 1

Spark is an in-memory distributed computing engine.

Hadoop is a framework for distributed storage ( HDFS ) and distributed processing ( YARN ).

Spark can run with or without Hadoop components (HDFS/YARN)

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Distributed Storage:

Since Spark does not have its own distributed storage system, it has to depend on one of these storage systems for distributed computing.

S3 – Non-urgent batch jobs. S3 fits very specific use cases when data locality isn't critical.

Cassandra – Perfect for streaming data analysis and an overkill for batch jobs.

HDFS – Great fit for batch jobs without compromising on data locality.

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Distributed processing:

You can run Spark in three different modes: Standalone, YARN and Mesos

Have a look at the below SE question for a detailed explanation about both distributed storage and distributed processing.

Which cluster type should I choose for Spark?

Answer 2

Spark can run without Hadoop but some of its functionality relies on Hadoop's code (eg handling of Parquet files). We're running Spark on Mesos and S3 which was a little tricky to set up but works really well once done (you can read a summary of what needed to properly set it here ).

(Edit) Note: since version 2.3.0 Spark also added native support for Kubernetes

Answer 3

By default , Spark does not have storage mechanism.

To store data, it needs fast and scalable file system. You can use S3 or HDFS or any other file system. Hadoop is economical option due to low cost.

Additionally if you use Tachyon, it will boost performance with Hadoop. It's highly recommended Hadoop for apache spark processing.

Answer 4

Yes, spark can run without hadoop. All core spark features will continue to work, but you'll miss things like easily distributing all your files (code as well as data) to all the nodes in the cluster via hdfs, etc.

Answer 5

As per Spark documentation, Spark can run without Hadoop.

You may run it as a Standalone mode without any resource manager.

But if you want to run in multi-node setup , you need a resource manager like YARN or Mesos and a distributed file system like HDFS,S3 etc.

Answer 6

Yes, you can install the Spark without the Hadoop. That would be little tricky You can refer arnon link to use parquet to configure on S3 as data storage. http://arnon.me/2015/08/spark-parquet-s3/

Spark is only do processing and it uses dynamic memory to perform the task, but to store the data you need some data storage system. Here hadoop comes in role with Spark, it provide the storage for Spark. One more reason for using Hadoop with Spark is they are open source and both can integrate with each other easily as compare to other data storage system. For other storage like S3, you should be tricky to configure it like mention in above link.

But Hadoop also have its processing unit called Mapreduce.

Want to know difference in Both?

Check this article: https://www.dezyre.com/article/hadoop-mapreduce-vs-apache-spark-who-wins-the-battle/83

I think this article will help you understand

• what to use,

• when to use and

• how to use !!!

Answer 7

Yes, of course. Spark is an independent computation framework. Hadoop is a distribution storage system(HDFS) with MapReduce computation framework. Spark can get data from HDFS, as well as any other data source such as traditional database(JDBC), kafka or even local disk.

Answer 8

是的，Spark 可以在安装或不安装 Hadoop 的情况下运行，有关更多详细信息，您可以访问 - https://spark.apache.org/docs/latest/

Answer 9

Yes spark can run without Hadoop. You can install spark in your local machine with out Hadoop. But Spark lib comes with pre Haddop libraries ie are used while installing on your local machine.

Answer 10

You can run spark without hadoop but spark has dependency on hadoop win-utils. so some features may not work, also if you want to read hive tables from spark then you need hadoop.

Answer 11

Not good at english,Forgive me!

TL;DR

Use local(single node) or standalone(cluster) to run spark without Hadoop, but stills need hadoop dependencies for logging and some file process.
Windows is strongly NOT recommend to run spark!

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Local mode

There are so many running mode with spark,one of it is called local will running without hadoop dependencies.
So,here is the first question: how to tell spark we want to run on local mode?
After read this official doc ,i just give it a try on my linux os:

1. Must install java and scala,not the core content so skip it.
2. Download spark package
   There are "without hadoop" and "hadoop integrated" 2 type of package
   The most important thing is "without hadoop" do NOT mean run without hadoop but just not bundle with hadoop so you can bundle it with your custom hadoop!
   Spark can run without hadoop(HDFS and YARN) but need hadoop dependency jar such as parquet/avro etc SerDe class,so strongly recommend to use "integrated" package(and you will found missing some log dependencies like log4j and slfj and other common utils class if chose "without hadoop" package but all this bundled with hadoop integrated pacakge)!
3. Run on local mode
   Most simple way is just run shell，and you will see the welcome log

# as same as ./bin/spark-shell --master local[*]
./bin/spark-shell

Standalone mode

As same as blew,but different with step 3.

# Starup cluster
# if you want run on frontend
# export SPARK_NO_DAEMONIZE=true 
./sbin/start-master.sh
# run this on your every worker
./sbin/start-worker.sh spark://VMS110109:7077

# Submit job or just shell
./bin/spark-shell spark://VMS110109:7077

On windows?

I kown so many people run spark on windown just for study,but here is so different on windows and really strongly NOT recommend to use windows.

The most important things is download winutils.exe from here and configure system variable HADOOP_HOME to point where winutils located.

At this moment 3.2.1 is the most latest release version of spark,but a bug is exist.You will got a exception like Illegal character in path at index 32: spark://xxxxxx:63293/D:\classe when run ./bin/spark-shell.cmd ,only startup a standalone cluster then use ./bin/sparkshell.cmd or use lower version can temporary fix this. For more detail and solution you can refer for here

Answer 12

不。它需要完整的 Hadoop 安装才能开始工作 - https://issues.apache.org/jira/browse/SPARK-10944