Remember once protobuf and hbase own version to resolve the conflict protobuf

 

Use protobuf production template code, use the version:

<dependency>
            <groupId>com.google.protobuf</groupId>
            <artifactId>protobuf-java</artifactId>
            <version>3.6.1</version>
</dependency>

hbase version is: 1.2.1-cdh5.1.4.0

If the print maven dependency tree, you can see the hbase protobuf version 2.5.0

In this case packaging does not complain, but once running, an error occurs:

java.lang.ClassNotFoundException: com.google.protobuf.LiteralByteString

So should we solve it?

The answer is to be backward compatible way - is to retain the high version, remove the lower version

The final approach is to remove the low version of dependencies in the maven to me as an example:

<dependency>
            <groupId>org.apache.hbase</groupId>
            <artifactId>hbase-client</artifactId>
            <version>${hbase.version}-${cdh.version}</version>
            <exclusions>
                <exclusion>
                    <groupId>org.jboss.netty</groupId>
                    <artifactId>netty</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>io.netty</groupId>
                    <artifactId>netty-all</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.apache.hbase</groupId>
                    <artifactId>hbase-protocol</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.apache.hbase</groupId>
            <artifactId>hbase-server</artifactId>
            <version>${hbase.version}-${cdh.version}</version>
            <exclusions>
                <exclusion>
                    <groupId>org.jboss.netty</groupId>
                    <artifactId>netty</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>io.netty</groupId>
                    <artifactId>netty-all</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.apache.hbase</groupId>
                    <artifactId>hbase-protocol</artifactId>
                </exclusion>
            </exclusions>
        </dependency>