org.apache.hadoop.hive.ql.exec
Class JoinOperator
java.lang.Object
org.apache.hadoop.hive.ql.exec.Operator<joinDesc>
org.apache.hadoop.hive.ql.exec.JoinOperator
- All Implemented Interfaces:
- Serializable, Node
public class JoinOperator
- extends Operator<joinDesc>
- implements Serializable
Join operator implementation.
- See Also:
- Serialized Form
Fields inherited from class org.apache.hadoop.hive.ql.exec.Operator |
alias, childOperators, conf, done, gWork, id, joinAlias, out, parentOperators, reporter, statsMap |
Methods inherited from class org.apache.hadoop.hive.ql.exec.Operator |
dump, forward, getChildOperators, getChildren, getConf, getDone, getName, getParentOperators, getSchema, getStats, jobClose, logStats, preorderMap, resetStats, setAlias, setChildOperators, setConf, setDone, setId, setJoinAlias, setMapredWork, setOutputCollector, setParentOperators, setSchema |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
numValues
protected transient int numValues
aliasField
protected static transient ExprNodeEvaluator aliasField
keyField
protected static transient ExprNodeEvaluator keyField
joinExprs
protected transient HashMap<Byte,JoinOperator.JoinExprMap> joinExprs
order
protected static transient Byte[] order
condn
protected transient joinCond[] condn
noOuterJoin
protected transient boolean noOuterJoin
JoinOperator
public JoinOperator()
initialize
public void initialize(org.apache.hadoop.conf.Configuration hconf,
org.apache.hadoop.mapred.Reporter reporter)
throws HiveException
- Overrides:
initialize
in class Operator<joinDesc>
- Throws:
HiveException
startGroup
public void startGroup()
throws HiveException
- Overrides:
startGroup
in class Operator<joinDesc>
- Throws:
HiveException
process
public void process(Object row,
ObjectInspector rowInspector)
throws HiveException
- Specified by:
process
in class Operator<joinDesc>
- Throws:
HiveException
endGroup
public void endGroup()
throws HiveException
- Forward a record of join results.
- Overrides:
endGroup
in class Operator<joinDesc>
- Throws:
HiveException
close
public void close(boolean abort)
throws HiveException
- All done
- Overrides:
close
in class Operator<joinDesc>
- Throws:
HiveException
Copyright © 2009 The Apache Software Foundation