org.apache.hadoop.hive.ql

Class QueryState

java.lang.Object

org.apache.hadoop.hive.ql.QueryState

public class QueryState
extends Object

The class to store query level info such as queryId. Multiple queries can run in the same session, so SessionState is to hold common session related info, and each QueryState is to hold query related info.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	QueryState.Builder Builder to instantiate the QueryState object.

Field Summary

Fields

Modifier and Type	Field and Description
static String	USERID_TAG

Method Summary

Modifier and Type	Method and Description
void	addResource(String resourceIdentifier, Object resource)
void	createHMSCache()
void	disableHMSCache() Disable the HMS cache.
void	enableHMSCache()
String	getCommandType()
HiveConf	getConf()
HiveOperation	getHiveOperation()
Map<Object,Object>	getHMSCache()
LineageState	getLineageState()
static QueryState	getNewQueryState(HiveConf conf, LineageState lineageState) Generating the new QueryState object.
long	getNumModifiedRows()
String	getQueryId()
String	getQueryString()
String	getQueryTag()
ReentrantLock	getResolveConditionalTaskLock()
Object	getResource(String resourceIdentifier)
HiveTxnManager	getTxnManager()
static void	setApplicationTag(HiveConf queryConf, String queryTag)
void	setCommandType(HiveOperation commandType)
void	setLineageState(LineageState lineageState)
void	setNumModifiedRows(long numModifiedRows)
void	setQueryTag(String queryTag)
void	setTxnManager(HiveTxnManager txnManager)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

USERID_TAG

public static final String USERID_TAG

See Also:

Constant Field Values

Method Detail

getQueryId

public String getQueryId()

getQueryString

public String getQueryString()

getHMSCache

public Map<Object,Object> getHMSCache()

disableHMSCache

public void disableHMSCache()

Disable the HMS cache. Useful in situations when you must not get cached metadata responses.

enableHMSCache

public void enableHMSCache()

createHMSCache

public void createHMSCache()

getCommandType

public String getCommandType()

getHiveOperation

public HiveOperation getHiveOperation()

setCommandType

public void setCommandType(HiveOperation commandType)

getConf

public HiveConf getConf()

getLineageState

public LineageState getLineageState()

setLineageState

public void setLineageState(LineageState lineageState)

getTxnManager

public HiveTxnManager getTxnManager()

setTxnManager

public void setTxnManager(HiveTxnManager txnManager)

getNumModifiedRows

public long getNumModifiedRows()

setNumModifiedRows

public void setNumModifiedRows(long numModifiedRows)

getQueryTag

public String getQueryTag()

setQueryTag

public void setQueryTag(String queryTag)

setApplicationTag

public static void setApplicationTag(HiveConf queryConf,
                                     String queryTag)

addResource

public void addResource(String resourceIdentifier,
                        Object resource)

getResource

public Object getResource(String resourceIdentifier)

getResolveConditionalTaskLock

public ReentrantLock getResolveConditionalTaskLock()

getNewQueryState

public static QueryState getNewQueryState(HiveConf conf,
                                          LineageState lineageState)

Generating the new QueryState object. Making sure, that the new queryId is generated.

Parameters:

conf - The HiveConf which should be used

lineageState - a LineageState to be set in the new QueryState object

Returns:

The new QueryState object