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fixed the indentation for topics in md style #1

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14 changes: 7 additions & 7 deletions README.md
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Expand Up @@ -6,7 +6,7 @@ This repository is a `containerized` version of the [spark-native-yarn](https://
This Docker image depends on our previous [Hadoop Docker](https://github.com/sequenceiq/hadoop-docker) image, available at the SequenceIQ [GitHub](https://github.com/sequenceiq) page. The base Hadoop Docker image is also available as an official [Docker image](https://registry.hub.docker.com/u/sequenceiq/hadoop-docker/) (sequenceiq/hadoop-docker).


###Pull the image from the Docker Repository
### Pull the image from the Docker Repository

We suggest to always pull the container from the official Docker repository - as this is always maintained and supported by us.

Expand All @@ -16,25 +16,25 @@ docker pull sequenceiq/spark-native-yarn

Once you have pulled the container you are ready to run the image.

###Run the image
### Run the image

```
docker run -i -t -h sandbox sequenceiq/spark-native-yarn /etc/bootstrap.sh -bash
```

###Versions
### Versions

```
Hadoop 2.5.1 and Apache Spark 1.1.0 and Apache Tez 0.5
```

You now have a fully configured Apache Spark, where the `execution context` is [Apache Tez](http://tez.apache.org/).

###Test the container
### Test the container

We have pushed sample data and tests from the [code repository](https://github.com/hortonworks/spark-native-yarn-samples) into the Docker container, thus you can start experimenting right away without writing one line of code.

####Calculate PI
#### Calculate PI
Simplest example to test with is the `PI calculation`.

```
Expand All @@ -47,7 +47,7 @@ You should expect something like the following as the result:
Pi is roughly 3.14668
```

####Run a KMeans example
#### Run a KMeans example

Run the `KMeans` example using the sample dataset.

Expand All @@ -64,7 +64,7 @@ DenseVector(9.2, 9.2, 9.2)
DenseVector(0.0, 0.0, 0.0)
DenseVector(9.05, 9.05, 9.05)
```
####Other examples (Join, Partition By, Source count, Word count)
#### Other examples (Join, Partition By, Source count, Word count)

Join
```
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