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https://github.com/googleapis/java-bigtable-hbase

Java libraries and HBase client extensions for accessing Google Cloud Bigtable
https://github.com/googleapis/java-bigtable-hbase

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Java libraries and HBase client extensions for accessing Google Cloud Bigtable

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# [Google Cloud Bigtable HBase client for Java](https://cloud.google.com/bigtable/docs/bigtable-and-hbase)



[![Maven][maven-hbase-shield]][maven-hbase-client-maven-search]

[![Stack Overflow][stackoverflow-shield]][stackoverflow-link]



[Google Cloud Bigtable](https://cloud.google.com/bigtable/) is Google's NoSQL

Big Data database service. It's the same database that powers many core Google

services, including Search, Analytics, Maps, and Gmail.



Bigtable is designed to handle massive workloads at consistent low latency and

high throughput, so it's a great choice for both operational and analytical

applications, including IoT, user analytics, and financial data analysis.



Bigtable provisions and scales to hundreds of petabytes automatically, and can

smoothly handle millions of operations per second. Changes to the deployment

configuration are immediate, so there is no downtime during reconfiguration.



Bigtable [integrates easily][integrations] with popular Big Data tools like

Hadoop, as well as Google Cloud Platform products like Cloud Dataflow and

Dataproc. Plus, Bigtable supports the open-source, industry-standard HBase API,

which makes it easy for development teams to get started.



**Note**: These artifacts are meant to wrap HBase over the Bigtable API. If you are looking for a Java client to access Bigtable APIs directly, please use [google-cloud-bigtable][google-cloud-bigtable].



## Project setup, installation, and configuration



### Prerequisites



* [Create a Cloud Bigtable instance](https://cloud.google.com/bigtable/docs/creating-instance)

* **Recommended**: [Install the Google Cloud SDK for Cloud Bigtable](https://cloud.google.com/bigtable/docs/installing-cloud-sdk)



### Using the Java client



* Add the appropriate [Cloud Bigtable artifact dependencies](http://mvnrepository.com/artifact/com.google.cloud.bigtable) to your [Maven project](https://cloud.google.com/bigtable/docs/using-maven).

  * `bigtable-hbase-1.x`: use for standalone applications where you are in control of your dependencies.

  * `bigtable-hbase-1.x-hadoop`: use in hadoop environments.

  * `bigtable-hbase-1.x-mapreduce`: use for map/reduce utilities.

  * `bigtable-hbase-1.x-shaded`: use in environments (other than hadoop) that require older versions of protobuf, guava, etc.  

  * `bigtable-hbase-2.x`: use for standalone applications where you are in control of your dependencies.  This includes an HBase async client.

  * `bigtable-hbase-2.x-hadoop`: use in hadoop environments.

  * `bigtable-hbase-2.x-shaded`: use in environments (other than hadoop) that require older versions of protobuf, guava, etc.  



[//]: # ({x-version-update-start:bigtable-client-parent:released})

  Maven:

  ```xml

  

    com.google.cloud.bigtable

    bigtable-hbase-1.x

    2.6.5

  

  ```



  Gradle:

  ```Groovy

  compile 'com.google.cloud.bigtable:bigtable-hbase-1.x:2.6.5'

  ```



  SBT:

  ```Scala

  libraryDependencies += "com.google.cloud.bigtable" % "bigtable-hbase-1.x" % "2.6.5"

  ```

[//]: # ({x-version-update-end})



* Refer to the [Connecting to Bigtable](https://cloud.google.com/bigtable/docs/hbase-connecting) documentation for detailed demonstrations of how to configure the properties to connect to Cloud Bigtable.



* Refer to the [Java samples documentation](https://cloud.google.com/bigtable/docs/samples) for detailed demonstrations of how to read and write data with Cloud Bigtable. The code for these samples is available in the [Cloud Bigtable examples project](https://github.com/GoogleCloudPlatform/cloud-bigtable-examples).



## Enabling Client Side Metrics



Cloud Bigtable client supports publishing client side metrics to Cloud Monitoring under the bigtable.googleapis.com/client namespace.



This feature is available once you upgrade to version 2.6.4 and above. Follow the guide on https://cloud.google.com/bigtable/docs/client-side-metrics-setup to enable.



Note: Beam / Dataflow integration is currently not supported.



## OpenCensus Integration



### Tracing



The code example below shows how to enable tracing. For more details, see [here](https://cloud.google.com/community/tutorials/bigtable-oc).



##### Maven Setup



If you are _not_ using the shaded Bigtable HBase Client artifact, you need to define the OpenCensus dependencies.



[//]: # ({x-version-update-start:bigtable-client-parent:released})

```xml



    com.google.cloud.bigtable

    bigtable-hbase-1.x

    2.6.5



```

[//]: # ({x-version-update-end})

```xml



    io.opencensus

    opencensus-impl

    0.31.1

    runtime



    io.opencensus

    opencensus-exporter-trace-stackdriver

    0.31.1

    

        

            io.grpc

            *

        

        

            com.google.auth

            *

        

    



```



If you _are_ using the shaded Bigtable HBase Client artifact, then the OpenCensus dependencies are embedded in the

shaded artifact; i.e. nothing additional for you to do.



[//]: # ({x-version-update-start:bigtable-client-parent:released})

```xml



    com.google.cloud.bigtable

    bigtable-hbase-1.x-shaded

    2.6.5



```

[//]: # ({x-version-update-end})



##### Java Example



```java

// For the non-shaded client, remove the package prefix "com.google.bigtable.repackaged."

import com.google.bigtable.repackaged.io.opencensus.exporter.trace.stackdriver.StackdriverTraceConfiguration;

import com.google.bigtable.repackaged.io.opencensus.exporter.trace.stackdriver.StackdriverTraceExporter;

import com.google.bigtable.repackaged.io.opencensus.trace.Tracing;

import com.google.bigtable.repackaged.io.opencensus.trace.samplers.Samplers;



import java.io.IOException;



public class OpenCensusExample {

    String projectId = "your-project-id";



    void setupTracing() throws Exception {

        // Setup tracing.

        StackdriverTraceExporter.createAndRegister(

                StackdriverTraceConfiguration.builder()

                        .setProjectId(projectId)

                        .build()

        );

        Tracing.getTraceConfig().updateActiveTraceParams(

                Tracing.getTraceConfig().getActiveTraceParams().toBuilder()

                        // Adjust the sampling rate as you see fit.

                        .setSampler(Samplers.probabilitySampler(0.01))

                        .build()

        );

    }

}

```



### Stats



---

Note: We recommend enabling client side built-in metrics if you want to view your metrics on cloud monitoring.

This integration is only for exporting the metrics to a third party dashboard.

---



The code example below shows how to enable metrics. For more details, see the [gRPC Java Guide](https://opencensus.io/guides/grpc/java/).



##### Maven Setup



If you are _not_ using the shaded Bigtable HBase Client artifact, you need to define the OpenCensus dependencies.



[//]: # ({x-version-update-start:bigtable-client-parent:released})

```xml



    com.google.cloud.bigtable

    bigtable-hbase-1.x

    2.6.5



```

[//]: # ({x-version-update-end})

```xml



    io.opencensus

    opencensus-impl

    0.31.1

    runtime



    io.opencensus

    opencensus-exporter-stats-stackdriver

    0.31.1

    

        

            io.grpc

            *

        

        

            com.google.auth

            *

        

    



```



If you _are_ using the shaded Bigtable HBase Client artifact, then the OpenCensus dependencies are embedded in the

shaded artifact; i.e. nothing additional for you to do.



```xml



    com.google.cloud.bigtable

    bigtable-hbase-1.x-shaded

    2.6.5



```

[//]: # ({x-version-update-end})



##### Java Example

```java

// For the non-shaded client, remove the package prefix "com.google.bigtable.repackaged."

import com.google.bigtable.repackaged.io.opencensus.contrib.grpc.metrics.RpcViews;

import com.google.bigtable.repackaged.io.opencensus.exporter.stats.stackdriver.StackdriverStatsConfiguration;

import com.google.bigtable.repackaged.io.opencensus.exporter.stats.stackdriver.StackdriverStatsExporter;



import java.io.IOException;



public class OpenCensusExample {

    String projectId = "your-project-id";



    void setupStatsExport() throws Exception {

        // Option 1: Automatic Configuration (from GCP Resources only):

        // If you are running from a GCP Resource (e.g. a GCE VM), the Stackdriver metrics are automatically

        // configured to upload to your resource.

        // For examples of monitored resources, see here: https://cloud.google.com/monitoring/api/resources

        StackdriverStatsExporter.createAndRegister();



        // Then register your gRPC views in OpenCensus.

        RpcViews.registerClientGrpcViews();



        // Option 2: Manual Configuration

        // If you are not running from a GCP Resource (e.g. if you are running on-prem), then you should

        // configure the monitored resource yourself.

        // Use the code snippet below as a starting example.

        // For examples of monitored resources, see here: https://cloud.google.com/monitoring/api/resources

        StackdriverStatsExporter.createAndRegister(

                StackdriverStatsConfiguration.builder()

                        .setProjectId(projectId)

                        // This example uses generic_node as the MonitoredResource, with your host name as the node ID.

                        .setMonitoredResource(MonitoredResource.newBuilder()

                                .setType("generic_node")

                                .putLabels("project_id", projectId)

                                .putLabels("location", "us-west1-b")  // Specify the region in which your service is running (e.g. us-west1-b). 

                                .putLabels("namespace", "anyNamespaceYouChoose")

                                .putLabels("node_id", InetAddress.getLocalHost().getHostName())  // Specify any node you choose (e.g. the local hostname).

                                .build())

                        .build()

        );

        

        // Then register your gRPC views in OpenCensus.

        RpcViews.registerClientGrpcViews();

    }

}

```



##### Viewing Your Metrics in Google Cloud Console



The above steps will expose Bigtable's gRPC metrics under the

custom.googleapis.com/opencensus/grpc.io/client prefix.



Follow [these instructions](https://opencensus.io/guides/grpc/java/) for viewing the metrics in

Google Cloud Console.



Be sure to choose your Resource Type as the one you defined in your Stackdriver configuration in

the code.



## Questions and discussions



If you have questions or run into issues with Google Cloud Bigtable or the

client libraries, use any of the following forums:



* Stack Overflow: tag questions with [`google-cloud-bigtable`][stackoverflow-link]

* Mailing list: [google-cloud-bigtable-discuss@][google-cloud-bigtable-discuss]



You can also subscribe to

[google-cloud-bigtable-announce@][google-cloud-bigtable-announce] list to receive

infrequent product and client library announcements.



## Contributing



Contributions to this library are always welcome and highly encouraged.



See [CONTRIBUTING][contributing] for more information how to get started.



Please note that this project is released with a Contributor Code of Conduct. By participating in

this project you agree to abide by its terms. See [Code of Conduct][code-of-conduct] for more

information.



## License



Apache 2.0 - See [LICENSE][license] for more information.



## CI Status



Java Version | Status

------------ | ------

Java 8 | [![Kokoro CI][kokoro-badge-image-1]][kokoro-badge-link-1]

Java 8 OSX | [![Kokoro CI][kokoro-badge-image-2]][kokoro-badge-link-2]

Java 11 | [![Kokoro CI][kokoro-badge-image-3]][kokoro-badge-link-3]

Integration | [![Kokoro CI][kokoro-badge-image-4]][kokoro-badge-link-4]



Java is a registered trademark of Oracle and/or its affiliates.



[maven-hbase-shield]: https://maven-badges.herokuapp.com/maven-central/com.google.cloud.bigtable/bigtable-hbase/badge.svg

[maven-hbase-client-maven-search]: http://search.maven.org/#search%7Cga%7C1%7Cg:com.google.cloud.bigtable

[stackoverflow-shield]: https://img.shields.io/badge/stackoverflow-google--cloud--bigtable-blue.svg

[stackoverflow-link]: http://stackoverflow.com/search?q=[google-cloud-bigtable]

[integrations]: https://cloud.google.com/bigtable/docs/integrations

[maven-examples-repo]: https://github.com/GoogleCloudPlatform/cloud-bigtable-examples

[google-cloud-bigtable-discuss]: https://groups.google.com/group/google-cloud-bigtable-discuss

[google-cloud-bigtable-announce]: https://groups.google.com/group/google-cloud-bigtable-announce

[google-cloud-bigtable-emulator]: https://github.com/googleapis/google-cloud-java/tree/main/google-cloud-testing/google-cloud-bigtable-emulator

[google-cloud-bigtable]: https://github.com/googleapis/java-bigtable

[kokoro-badge-image-1]: http://storage.googleapis.com/cloud-devrel-public/java/badges/java-bigtable-hbase/java8.svg

[kokoro-badge-link-1]: http://storage.googleapis.com/cloud-devrel-public/java/badges/java-bigtable-hbase/java8.html

[kokoro-badge-image-2]: http://storage.googleapis.com/cloud-devrel-public/java/badges/java-bigtable-hbase/java8-osx.svg

[kokoro-badge-link-2]: http://storage.googleapis.com/cloud-devrel-public/java/badges/java-bigtable-hbase/java8-osx.html

[kokoro-badge-image-3]: http://storage.googleapis.com/cloud-devrel-public/java/badges/java-bigtable-hbase/java11.svg

[kokoro-badge-link-3]: http://storage.googleapis.com/cloud-devrel-public/java/badges/java-bigtable-hbase/java11.html

[kokoro-badge-image-4]: http://storage.googleapis.com/cloud-devrel-public/java/badges/java-bigtable-hbase/integration.svg

[kokoro-badge-link-4]: http://storage.googleapis.com/cloud-devrel-public/java/badges/java-bigtable-hbase/integration.html

[contributing]: https://github.com/googleapis/java-bigtable-hbase/blob/main/CONTRIBUTING.md

[code-of-conduct]: https://github.com/googleapis/java-bigtable-hbase/blob/main/CODE_OF_CONDUCT.md#contributor-code-of-conduct

[license]: https://github.com/googleapis/java-bigtable-hbase/blob/main/LICENSE