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Adding delete cluster release note for CTP 2.4
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‎docs/big-data-cluster/release-notes-big-data-cluster.md‎

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@@ -23,7 +23,7 @@ The following sections describe the new features and known issues for big data c
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### What's New
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| New feature/update | Details |
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| New feature or update | Details |
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|:---|:---|
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| Guidance on GPU support for running deep learning with TensorFlow in Spark. | [Deploy a big data cluster with GPU support and run TensorFlow](spark-gpu-tensorflow.md) |
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| **SqlDataPool** and **SqlStoragePool** data sources are no longer created by default. | Create these manually as needed. See the [known issues](#externaltablesctp24). |
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KubeDNS is running at https://172.30.243.91:6443/api/v1/namespaces/kube-system/services/kube-dns:dns/proxy
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```
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#### Delete cluster fails
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When you attempt to delete a cluster with **mssqlctl**, it fails with the following error:
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```
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2019-03-26 20:38:11.0614 UTC | INFO | Deleting cluster ...
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Error processing command: "TypeError"
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delete_namespaced_service() takes 3 positional arguments but 4 were given
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Makefile:61: recipe for target 'delete-cluster' failed
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make[2]: *** [delete-cluster] Error 1
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Makefile:223: recipe for target 'deploy-clean' failed
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make[1]: *** [deploy-clean] Error 2
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Makefile:203: recipe for target 'deploy-clean' failed
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make: *** [deploy-clean] Error 2
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```
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A new Python Kubernetes client (version 9.0.0) changed the delete namespaces API, which currently breaks **mssqlctl**. This only happens if you have a newer Kubernetes python client installed. You can work around this problem by directly deleting the cluster using **kubectl** (`kubectl delete ns <ClusterName>`), or you can install the older version using `sudo pip install kubernetes==8.0.1`.
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#### <a id="externaltablesctp24"></a> External tables
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- Big data cluster deployment no longer creates the **SqlDataPool** and **SqlStoragePool** external data sources. You can create these data sources manually to support data virtualization to the data pool and storage pool.
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The following sections describe the new features and known issues for big data clusters in SQL Server 2019 CTP 2.3.
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### New features
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### What's New
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| New feature | Details |
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| New feature or update | Details |
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| :---------- | :------ |
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| Submit Spark jobs on big data clusters in IntelliJ. | [Submit Spark jobs on SQL Server big data clusters in IntelliJ](spark-submit-job-intellij-tool-plugin.md) |
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| Common CLI for application deployment and cluster management. | [How to deploy an app on SQL Server 2019 big data cluster (preview)](big-data-cluster-create-apps.md) |

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