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articles/hdinsight/hadoop/apache-hadoop-hive-java-udf.md

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ms.service: hdinsight
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ms.topic: how-to
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ms.custom: hdinsightactive, devx-track-java, devx-track-extended-java
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ms.date: 07/20/2023
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ms.date: 07/12/2024
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# Use a Java UDF with Apache Hive in HDInsight
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* A Hadoop cluster on HDInsight. See [Get Started with HDInsight on Linux](./apache-hadoop-linux-tutorial-get-started.md).
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* [Java Developer Kit (JDK) version 8](/azure/developer/java/fundamentals/java-support-on-azure)
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* [Apache Maven](https://maven.apache.org/download.cgi) properly [installed](https://maven.apache.org/install.html) according to Apache. Maven is a project build system for Java projects.
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* The [URI scheme](../hdinsight-hadoop-linux-information.md#URI-and-scheme) for your clusters primary storage. This would be wasb:// for Azure Storage, abfs:// for Azure Data Lake Storage Gen2 or adl:// for Azure Data Lake Storage Gen1. If secure transfer is enabled for Azure Storage, the URI would be `wasbs://`. See also, [secure transfer](../../storage/common/storage-require-secure-transfer.md).
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* The [URI scheme](../hdinsight-hadoop-linux-information.md#URI-and-scheme) for your clusters primary storage. This would be wasb:// for Azure Storage, `abfs://` for Azure Data Lake Storage Gen2 or adl:// for Azure Data Lake Storage Gen1. If secure transfer is enabled for Azure Storage, the URI would be `wasbs://`. See also, [secure transfer](../../storage/common/storage-require-secure-transfer.md).
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* A text editor or Java IDE
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articles/hdinsight/hadoop/apache-hadoop-on-premises-migration-best-practices-infrastructure.md

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# Migrate on-premises Apache Hadoop clusters to Azure HDInsight - infrastructure best practices

articles/hdinsight/hadoop/apache-hadoop-use-hive-ambari-view.md

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# Use Apache Ambari Hive View with Apache Hadoop in HDInsight
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> [!TIP]
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> Download or save results from the **Actions** drop-down dialog box under the **Results** tab.
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### Visual explain
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### Visual explains
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To display a visualization of the query plan, select the **Visual Explain** tab below the worksheet.
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To display a visualization of the query plan, select the **Visual Explains** tab below the worksheet.
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The **Visual Explain** view of the query can be helpful in understanding the flow of complex queries.
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The **Visual Explains** view of the query can be helpful in understanding the flow of complex queries.
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### Tez UI
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articles/hdinsight/hadoop/hdinsight-hdfs-troubleshoot-safe-mode.md

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description: Troubleshoot local Apache HDFS stuck in safe mode on Apache cluster in Azure HDInsight
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ms.topic: troubleshooting
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# Scenario: Local HDFS stuck in safe mode on Azure HDInsight cluster

articles/hdinsight/hadoop/hdinsight-troubleshoot-invalidnetworksecuritygroupsecurityrules-cluster-creation-fails.md

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description: Cluster Creation Fails with the ErrorCode InvalidNetworkSecurityGroupSecurityRules
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# Scenario: InvalidNetworkSecurityGroupSecurityRules - cluster creation fails in Azure HDInsight

articles/hdinsight/hadoop/troubleshoot-disk-space.md

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description: Troubleshooting steps and possible resolutions for managing disk space issues when interacting with Azure HDInsight clusters.
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# Manage disk space in Azure HDInsight
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* Ensure that the cluster size is appropriate for the workload. The workload might have changed recently or the cluster might have been resized. [Scale up](../hdinsight-scaling-best-practices.md) the cluster to match a higher workload.
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* `/mnt/resource` might be filled with orphaned files (as if resource manager restart). If necessary, manually clean `/mnt/resource/hadoop/yarn/log` and `/mnt/resource/hadoop/yarn/local`.
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* `/mnt/resource` might be filled with orphaned files (as if Resource Manager restart). If necessary, manually clean `/mnt/resource/hadoop/yarn/log` and `/mnt/resource/hadoop/yarn/local`.
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## Next steps
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articles/hdinsight/hdinsight-go-sdk-overview.md

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# HDInsight SDK for Go (Preview)
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## Cluster monitoring
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The HDInsight Management SDK can also be used to manage monitoring on your clusters via the Operations Management Suite (OMS).
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The HDInsight Management SDK can also be used to manage to monitor on your clusters via the Operations Management Suite (OMS).
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Similarly to how you created `ClusterClient` to use for management operations, you need to create an `ExtensionClient` to use for monitoring operations. Once you've completed the Authentication section above, you can create an `ExtensionClient` like so:
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## Script actions
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HDInsight provides a configuration function called script actions that invokes custom scripts to customize the cluster.
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HDInsight provides a configuration function called script actions that invoke custom scripts to customize the cluster.
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> [!NOTE]
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> More information on how to use script actions can be found here: [Customize Linux-based HDInsight clusters using script actions](./hdinsight-hadoop-customize-cluster-linux.md)

articles/hdinsight/hdinsight-hadoop-customize-cluster-linux.md

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# Customize Azure HDInsight clusters by using script actions
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The following script shows how to apply a script action when you create a cluster by using PowerShell:
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[!code-powershell[main](../../powershell_scripts/hdinsight/use-script-action/use-script-action.ps1?range=5-90)]
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[!Code-powershell[main](../../powershell_scripts/hdinsight/use-script-action/use-script-action.ps1?range=5-90)]
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It can take several minutes before the cluster is created.
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To use these PowerShell commands, you need the [AZ Module](/powershell/azure/). The following example shows how to apply a script action to a running cluster:
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[!code-powershell[main](../../powershell_scripts/hdinsight/use-script-action/use-script-action.ps1?range=105-117)]
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[!Code-powershell[main](../../powershell_scripts/hdinsight/use-script-action/use-script-action.ps1?range=105-117)]
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After the operation finishes, you receive information similar to the following text:
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The following example script demonstrates using the cmdlets to promote and then demote a script.
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[!code-powershell[main](../../powershell_scripts/hdinsight/use-script-action/use-script-action.ps1?range=123-140)]
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[!Code-powershell[main](../../powershell_scripts/hdinsight/use-script-action/use-script-action.ps1?range=123-140)]
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### Azure CLI
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articles/hdinsight/hdinsight-hadoop-stack-trace-error-messages.md

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# Index of Apache Hadoop in HDInsight troubleshooting articles

articles/hdinsight/hdinsight-supported-node-configuration.md

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# What are the default and recommended node configurations for Azure HDInsight?
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The only cluster types that have data disks are Kafka and HBase clusters with the Accelerated Writes feature enabled. HDInsight supports P30 and S30 disk sizes in these scenarios. For all other cluster types, HDInsight provides managed disk space with the cluster. Starting 11/07/2019, the managed disk size of each node in the newly created cluster is 128 GB. This can't be changed.
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The only cluster types that have data disks are Kafka and HBase clusters with the Accelerated Writes feature enabled. HDInsight supports P30 and S30 disk sizes in these scenarios. For all other cluster types, HDInsight provides managed disk space with the cluster. From 11/07/2019 onwards, the managed disk size of each node in the newly created cluster is 128 GB. This can't be changed.
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The specifications of all minimum recommended VM types used in this document are summarized in the following table.
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* [General purpose virtual machine sizes: Dv2 series 1-5](../virtual-machines/dv2-dsv2-series.md)
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* [Memory optimized virtual machine sizes: Dv2 series 11-15](../virtual-machines/dv2-dsv2-series-memory.md)
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* [General purpose virtual machine sizes: Av2 series 1-8](../virtual-machines/av2-series.md)
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* [General purpose virtual machine sizes: `Dv2` series 1-5](../virtual-machines/dv2-dsv2-series.md)
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* [Memory optimized virtual machine sizes: `Dv2` series 11-15](../virtual-machines/dv2-dsv2-series-memory.md)
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* [General purpose virtual machine sizes: `Av2` series 1-8](../virtual-machines/av2-series.md)
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### All supported regions
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