According to the link here https://cwiki.apache.org/Hive/hiveclient.html#HiveClient-ThriftJavaClient . It says that
Thrift Java Client Operates both in embedded mode and on standalone server.
How do I run the thrift java client with hive in embedded mode?
So here is how to run hive 'thrift' client in embedded mode.
import org.apache.hadoop.hive.service.HiveInterface;
import org.apache.hadoop.hive.service.HiveServer;
...
HiveInterface hiveClient = new HiveServer.HiveServerHandler();
Add following to classpath
$HIVE_HOME/lib/*.jar
$HIVE_HOME/conf
I found this in the hive source code here $HIVE_HOME/src/jdbc/src/java/../HiveConnection.java
Hive use Thrift as RPC framework, and thrift rpc make it easy to "Operates both in embedded mode and on standalone server".
HiveConf hiveConf = new HiveConf();
hiveConf.addResource("/Users/tzp/pppathh/hive-site.xml");
TTransport transport = new TSocket("127.0.0.1", 10000);
transport = PlainSaslHelper.getPlainTransport(USERNAME, PASSWORD, transport);
TBinaryProtocol protocol = new TBinaryProtocol(transport);
transport.open();
ThriftCLIServiceClient cliServiceClient = new ThriftCLIServiceClient(new TCLIService.Client(protocol), hiveConf);
SessionHandle sessionHandle = cliServiceClient.openSession(USERNAME, PASSWORD);
OperationHandle operationHandle = cliServiceClient.executeStatement(sessionHandle, "select * from u_data_ex limit 2", null);
RowSet results = cliServiceClient.fetchResults(operationHandle);
for (Object[] result : results) {
System.out.println(Arrays.asList(result));
}
HiveConf hiveConf = new HiveConf();
hiveConf.addResource("/Users/tzp/ppppathh/hive-site.xml");
hiveConf.set("fs.defaultFS", "hdfs://localhost:9000");
EmbeddedThriftBinaryCLIService service = new EmbeddedThriftBinaryCLIService();
service.init(hiveConf);
ICLIService icliService = service.getService();
SessionHandle sessionHandle = icliService.openSession(USERNAME, PASSWORD, null);
OperationHandle operationHandle = icliService.executeStatement(sessionHandle, "select * from u_data_ex limit 2", null);
RowSet results = icliService.fetchResults(operationHandle);
for (Object[] result : results) {
System.out.println(Arrays.asList(result));
}
This question is really old, but I still need some solutions, but there isn't any useful info at google/so/hive wiki, so I dive into the source code and find these.
All based on Hive 3.1.2.
Reference:
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