---
layout: page
title: Run Hello Samza without Internet
---
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This tutorial is to help you run [Hello Samza](../../../startup/hello-samza/{{site.version}}/) if you can not connect to the internet. 

### Test Your Connection

Ping irc.wikimedia.org. Sometimes the firewall in your company blocks this service.

{% highlight bash %}
telnet irc.wikimedia.org 6667
{% endhighlight %}

You should see something like this:

```
Trying 208.80.152.178...
Connected to ekrem.wikimedia.org.
Escape character is '^]'.
NOTICE AUTH :*** Processing connection to irc.pmtpa.wikimedia.org
NOTICE AUTH :*** Looking up your hostname...
NOTICE AUTH :*** Checking Ident
NOTICE AUTH :*** Found your hostname
```

Otherwise, you may have the connection problem.

### Use Local Data to Run Hello Samza

We provide an alternative to get wikipedia feed data. Instead of running

{% highlight bash %}
deploy/samza/bin/run-app.sh --config-path=$PWD/deploy/samza/config/wikipedia-feed.properties
{% endhighlight %}

You will run

{% highlight bash %}
bin/produce-wikipedia-raw-data.sh
{% endhighlight %}

This script will read wikipedia feed data from local file and produce them to the Kafka broker. By default, it produces to localhost:9092 as the Kafka broker and uses localhost:2181 as zookeeper. You can overwrite them:

{% highlight bash %}
bin/produce-wikipedia-raw-data.sh -b yourKafkaBrokerAddress -z yourZookeeperAddress
{% endhighlight %}

Now you can go back to Generate Wikipedia Statistics section in [Hello Samza](../../../startup/hello-samza/{{site.version}}/) and follow the remaining steps.

### A Little Explanation

The goal of

{% highlight bash %}
deploy/samza/bin/run-app.sh --config-path=$PWD/deploy/samza/config/wikipedia-feed.properties
{% endhighlight %}

is to deploy a Samza job which listens to wikipedia API, receives the feed in realtime and produces the feed to the Kafka topic wikipedia-raw. The alternative in this tutorial is reading local wikipedia feed in an infinite loop and producing the data to Kafka wikipedia-raw. The follow-up job, wikipedia-parser is getting data from Kafka topic wikipedia-raw, so as long as we have correct data in Kafka topic wikipedia-raw, we are fine. All Samza jobs are connected by the Kafka and do not depend on each other.