Facing issue when configuring opentsDB on Cassandra

[raj-123]

root@raj-HP-EliteBook-8470p:/home/raj/Downloads/asynccassandra-master# mvn pack

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[ERROR] /home/raj/Downloads/asynccassandra-master/src/org/hbase/async/HBaseClient.java:[366,35] error: cannot find symbol
[INFO] 5 errors
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 4.173 s
[INFO] Finished at: 2018-04-03T15:15:39+05:30
[INFO] Final Memory: 26M/271M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.5.1:compile (default-compile) on project asynccassandra: Compilation failure: Compilation failure:
[ERROR] /home/raj/Downloads/asynccassandra-master/src/org/hbase/async/HBaseClient.java:[304,34] error: cannot find symbol
[ERROR] symbol: variable ConsistencyLevel
[ERROR] location: class HBaseClient
[ERROR] /home/raj/Downloads/asynccassandra-master/src/org/hbase/async/HBaseClient.java:[303,25] [deprecation] BoundedExponentialBackoff(long,int,int) in BoundedExponentialBackoff has been deprecated
[ERROR] /home/raj/Downloads/asynccassandra-master/src/org/hbase/async/HBaseClient.java:[311,35] error: cannot find symbol
[ERROR] symbol: variable ConsistencyLevel
[ERROR] location: class HBaseClient
[ERROR] /home/raj/Downloads/asynccassandra-master/src/org/hbase/async/HBaseClient.java:[353,25] [deprecation] BoundedExponentialBackoff(long,int,int) in BoundedExponentialBackoff has been deprecated
[ERROR] /home/raj/Downloads/asynccassandra-master/src/org/hbase/async/HBaseClient.java:[366,35] error: cannot find symbol
[ERROR] -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException