Cannot execute SQL from inside HIVE UDF via jdbc driver - jdbc

Question

This is my first post! I've been searching for solutions to this to no avail for weeks (on and off)...
I have a java Hive UDF where I want to run SQL against Hive table to map data in memory for later use. I have the connection information correct, but it cannot find the HiveDriver. I have tried adding the Hive jdbc driver jar in hive and exporting it into a runnable jar.
Error below, relevant code after.
hive> add jar /tmp/xhUDFs.jar;
Added [/tmp/xhUDFs.jar] to class path
Added resources: [/tmp/xhUDFs.jar]
hive> CREATE TEMPORARY FUNCTION getRefdata as 'xhUDFs.GetRefdata';
OK
Time taken: 0.042 seconds
hive> select '06001',getRefdata('CBSAname','06001');
java.lang.ClassNotFoundException:
org.apache.hadoop.hive.jdbc.HiveDriver
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at xhUDFs.GetRefdata.getRefmap(GetRefdata.java:53)
at xhUDFs.GetRefdata.evaluate(GetRefdata.java:35)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.apache.hadoop.hive.ql.exec.FunctionRegistry.invoke(FunctionRegistry.java:954)
at org.apache.hadoop.hive.ql.udf.generic.GenericUDFBridge.evaluate(GenericUDFBridge.java:182)
at org.apache.hadoop.hive.ql.udf.generic.GenericUDF.initializeAndFoldConstants(GenericUDF.java:168)
at org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc.newInstance(ExprNodeGenericFuncDesc.java:233)
at org.apache.hadoop.hive.ql.parse.TypeCheckProcFactory$DefaultExprProcessor.getXpathOrFuncExprNodeDesc(TypeCheckProcFactory.java:1093)
at org.apache.hadoop.hive.ql.parse.TypeCheckProcFactory$DefaultExprProcessor.process(TypeCheckProcFactory.java:1312)
at org.apache.hadoop.hive.ql.lib.DefaultRuleDispatcher.dispatch(DefaultRuleDispatcher.java:90)
at org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.dispatchAndReturn(DefaultGraphWalker.java:95)
at org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.dispatch(DefaultGraphWalker.java:79)
at org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.walk(DefaultGraphWalker.java:133)
at org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.startWalking(DefaultGraphWalker.java:110)
at org.apache.hadoop.hive.ql.parse.TypeCheckProcFactory.genExprNode(TypeCheckProcFactory.java:209)
at org.apache.hadoop.hive.ql.parse.TypeCheckProcFactory.genExprNode(TypeCheckProcFactory.java:153)
at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genAllExprNodeDesc(SemanticAnalyzer.java:10499)
at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genExprNodeDesc(SemanticAnalyzer.java:10455)
at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genSelectPlan(SemanticAnalyzer.java:3822)
at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genSelectPlan(SemanticAnalyzer.java:3601)
at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genPostGroupByBodyPlan(SemanticAnalyzer.java:8943)
at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genBodyPlan(SemanticAnalyzer.java:8898)
at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genPlan(SemanticAnalyzer.java:9743)
at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genPlan(SemanticAnalyzer.java:9636)
at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genOPTree(SemanticAnalyzer.java:10109)
at org.apache.hadoop.hive.ql.parse.CalcitePlanner.genOPTree(CalcitePlanner.java:329)
at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.analyzeInternal(SemanticAnalyzer.java:10120)
at org.apache.hadoop.hive.ql.parse.CalcitePlanner.analyzeInternal(CalcitePlanner.java:211)
at org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:227)
at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:454)
at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:314)
at org.apache.hadoop.hive.ql.Driver.compileInternal(Driver.java:1164)
at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1212)
at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1101)
at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1091)
at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:216)
at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:168)
at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:379)
at org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:739)
at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:684)
at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:624)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.apache.hadoop.util.RunJar.run(RunJar.java:221)
at org.apache.hadoop.util.RunJar.main(RunJar.java:136) java.lang.ClassNotFoundException:
org.apache.hadoop.hive.jdbc.HiveDriver
Now the code snippet:
try {
Class.forName("org.apache.hadoop.hive.jdbc.HiveDriver");
Connection wConn = DriverManager.getConnection("jdbc:hive2://172.20.2.40:10000/refdata", "", "");
Statement sql = wConn.createStatement();
ResultSet wResult = sql.executeQuery("select distinct zipcode5,cbsa_name,msa_name,pmsa_name,region,csaname,cbsa_div_name from refdata.zip_code_business_all_16_1_2016_orc where primaryrecord='P'");
while (wResult.next()){
censusMap.put(wResult.getString("zipcode5"), wResult.getString("cbsa_name"));
}
} catch (SQLException | ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}