The HBase shell is a command-line tool that performs administrative tasks, such as creating and deleting tables. The Cloud Bigtable HBase client for Java makes it possible to use the HBase shell to connect to Cloud Bigtable.
This page describes how to install the HBase shell, along with the Cloud Bigtable HBase client for Java, on a Compute Engine instance or on your own machine. You do not need to install any other HBase dependencies, such as Apache ZooKeeper. The Cloud Bigtable HBase client for Java does not require these additional dependencies.
Before you start
Before you start, you'll need to complete the following tasks:
- Create a Cloud Bigtable instance. Be sure to note the project ID and instance ID.
- Install the
gcloudcommand-line tool. See the Cloud SDK setup instructions for details.
- If you're installing the HBase shell on a Compute Engine instance, create an instance that has the correct scopes for Cloud Bigtable.
To use the HBase shell with the Cloud Bigtable HBase client for Java, you must install a Java 8 runtime environment. Other versions of Java are not supported.
On Debian GNU/Linux or Ubuntu, you can install the Java 8 JRE by running the following commands:
sudo apt-get update sudo apt-get install openjdk-8-jre-headless
For other operating systems, you can download and install the Java JRE.
To run the HBase shell, you must install Apache Maven. The HBase shell uses Maven to download the required dependencies.
On Debian GNU/Linux or Ubuntu, you can install Maven by running the following commands:
sudo apt-get update sudo apt-get install maven
On macOS, you can install Maven using Homebrew:
brew install maven
For other operating systems, see the instructions on the Maven website.
When you install the HBase shell on your own machine, you need to obtain user access credentials for your Google Cloud Platform resources.
To obtain credentials, run the following command:
gcloud auth application-default login
The command opens your web browser. Choose your Google account if prompted, then click Allow to authorize access to your account.
Setting up the HBase shell
Downloading required files
From the command line, download and unzip the HBase shell quickstart:
curl -f -O https://storage.googleapis.com/cloud-bigtable/quickstart/GoogleCloudBigtable-Quickstart-1.0.0-pre.zip unzip GoogleCloudBigtable-Quickstart-1.0.0-pre.zip
The HBase shell files are unzipped to a
Setting the JAVA_HOME environment variable
JAVA_HOME environment variable should be set to the location
where your Java runtime environment is located.
To find the current value of
If this command does not print any output, the variable is not set.
To set the value on Debian or Ubuntu:
export JAVA_HOME=$(update-alternatives --list java | tail -1 | sed -E 's/\/bin\/java//')
A typical value on Debian or Ubuntu is
To set the value on macOS (requires Xcode's command-line tools):
A typical value on macOS is
After you set the value of
JAVA_HOME, run the following command to ensure
that the value refers to the appropriate Java version:
Connecting to a Cloud Bigtable instance
You can use the HBase shell to connect to your Cloud Bigtable instance, get information about your existing tables, and create new tables.
To start the HBase shell, run the following command from the
If your project has only one Cloud Bigtable instance, the HBase shell will automatically connect to that instance. If your project has multiple Cloud Bigtable instances, the HBase shell will display a list of instance IDs; type the number next to your instance ID, then press Enter.
After the HBase shell connects to your instance, it displays a series of log messages, which is normal. The shell prompt then appears:
Now that you've started the HBase shell, try running the following commands:
To list your tables, type
listand press Enter. If you haven't created any tables yet, the HBase shell displays a message similar to the following:
TABLE 0 row(s) in 1.3580 seconds => 
To create a table, use the
createcommand. For example, to create a table named
my-table, with one column family named
create 'my-table', 'cf1'
The shell displays a message similar to the following:
0 row(s) in 1.5210 seconds => Hbase::Table - my-table
To add data to a table, use the
putcommand. For example, to put the value
test-valuein the row
r1, using the column family
cf1and the column qualifier
put 'my-table', 'r1', 'cf1:c1', 'test-value'
You can then use the
scancommand to scan the table and read the data you added:
The shell displays output similar to the following:
ROW COLUMN+CELL r1 column=cf1:c1, timestamp=1430687836046, value=test-value 1 row(s) in 0.6260 seconds
To drop a table, use the
disablecommand to disable the table, followed by the
dropcommand. For example, to drop the table
disable 'my-table' drop 'my-table'
To exit the HBase shell, type
exitand press Enter.
While the HBase shell is running, you can type
help to get usage instructions.
See the HBase
documentation for additional information.