AsyncHBase

https://opentsdb.github.io/asynchbase
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AsyncHBase is an asynchronous, high-performance, event-driven HBase client for Java and other JVM...
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### Compile AsyncHBase from source

Source: https://opentsdb.github.io/asynchbase/docs/build/html/installation.html

Standard commands to clone the repository, build the project, and verify the output.

```bash
git clone git://github.com/OpenTSDB/asynchbase.git
cd asynchbase
make
ls build
```

--------------------------------

### Build with Maven

Source: https://opentsdb.github.io/asynchbase/docs/build/html/installation.html

Alternative build process using Maven if preferred over the default Make system.

```bash
make pom.xml
mvn clean package
```

--------------------------------

### Initialize AsyncHBase Config

Source: https://opentsdb.github.io/asynchbase/docs/build/html/configuration.html

Create a configuration object using default values or by loading from a standard Java properties file.

```java
Config config = new Config();
```

```java
Config config = new Config(<path_to_file>);
```

--------------------------------

### Run tests

Source: https://opentsdb.github.io/asynchbase/docs/build/html/installation.html

Commands for executing unit tests and integration tests.

```bash
make check
export HBASE_HOME=/usr/local/hbase
make integration
```

--------------------------------

### JAAS Configuration for Kerberos

Source: https://opentsdb.github.io/asynchbase/docs/build/html/authentication.html

Define the JAAS configuration file to specify the Krb5LoginModule, keytab path, and principal for authentication.

```text
Client {
  com.sun.security.auth.module.Krb5LoginModule required
  useKeyTab=true
  useTicketCache=false
  keyTab="/path/to/keytab.keytab"
  principal="myhbaseuser@MY.HADOOP.DOMAIN";
};
```

--------------------------------

### Add Asynchronous HBase Client Maven Dependency

Source: https://opentsdb.github.io/asynchbase/index.html

Include this dependency in your project's pom.xml file to use the Asynchronous HBase Client library.

```xml
  <dependency>
    <groupId>org.hbase</groupId>
    <artifactId>asynchbase</artifactId>
    <version>1.8.0</version>
  </dependency>
```

--------------------------------

### Escaping Unicode characters in configuration strings

Source: https://opentsdb.github.io/asynchbase/docs/build/html/configuration.html

Represent Unicode characters using their hexadecimal escape sequence.

```text
my.property = \u0009
```

--------------------------------

### Escaping special characters in configuration strings

Source: https://opentsdb.github.io/asynchbase/docs/build/html/configuration.html

Use a backslash to escape special characters like #, !, =, and : within property values.

```text
my.property = Hello World\!
```

--------------------------------

### Override Configuration Values

Source: https://opentsdb.github.io/asynchbase/docs/build/html/configuration.html

Modify configuration settings before passing the object to the HBaseClient constructor.

```java
config.overrideConfig(<property>, <value>);
```
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