org.apache.hadoop.hive.ql.exec
Class CollectOperator
java.lang.Object
org.apache.hadoop.hive.ql.exec.Operator<collectDesc>
org.apache.hadoop.hive.ql.exec.CollectOperator
- All Implemented Interfaces:
- Serializable, Node
public class CollectOperator
- extends Operator<collectDesc>
- implements Serializable
Buffers rows emitted by other operators
- See Also:
- Serialized Form
Fields inherited from class org.apache.hadoop.hive.ql.exec.Operator |
alias, childOperators, childOperatorsArray, childOperatorsTag, colExprMap, conf, done, id, inputObjInspectors, LOG, out, outputObjInspector, parentOperators, reporter, state, statsMap |
Methods inherited from class org.apache.hadoop.hive.ql.exec.Operator |
areAllParentsInitialized, close, closeOp, dump, endGroup, forward, getChildOperators, getChildren, getColumnExprMap, getConf, getDone, getIdentifier, getName, getParentOperators, getSchema, getStats, initEvaluators, initEvaluatorsAndReturnStruct, initialize, initializeChildren, jobClose, logStats, preorderMap, removeChild, replaceChild, replaceParent, resetStats, setAlias, setChildOperators, setColumnExprMap, setConf, setDone, setId, setOutputCollector, setParentOperators, setReporter, setSchema, startGroup |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
rowList
protected transient ArrayList<Object> rowList
standardRowInspector
protected transient ObjectInspector standardRowInspector
CollectOperator
public CollectOperator()
initializeOp
protected void initializeOp(org.apache.hadoop.conf.Configuration hconf)
throws HiveException
- Description copied from class:
Operator
- Operator specific initialization.
- Overrides:
initializeOp
in class Operator<collectDesc>
- Throws:
HiveException
process
public void process(Object row,
int tag)
throws HiveException
- Description copied from class:
Operator
- Process the row.
- Specified by:
process
in class Operator<collectDesc>
- Parameters:
row
- The object representing the row.tag
- The tag of the row usually means which parent this row comes from.
Rows with the same tag should have exactly the same rowInspector all the time.
- Throws:
HiveException
retrieve
public void retrieve(InspectableObject result)
Copyright © 2009 The Apache Software Foundation