org.apache.hadoop.hive.ql.session

Class OperationLog

java.lang.Object

org.apache.hadoop.hive.ql.session.OperationLog

public class OperationLog
extends Object

OperationLog wraps the actual operation log file, and provides interface for accessing, reading, writing, and removing the file.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	OperationLog.LoggingLevel

Constructor Summary

Constructors

Constructor and Description
OperationLog(String name, File file, HiveConf hiveConf)

Method Summary

Methods

Modifier and Type	Method and Description
void	close() Close this OperationLog when operation is closed.
static OperationLog	getCurrentOperationLog()
static OperationLog.LoggingLevel	getLoggingLevel(String mode)
OperationLog.LoggingLevel	getOpLoggingLevel()
List<String>	readOperationLog(boolean isFetchFirst, long maxRows) Read operation execution logs from log file
static void	removeCurrentOperationLog()
static void	setCurrentOperationLog(OperationLog operationLog)
void	writeOperationLog(String operationLogMessage) Write operation execution logs into log file

Methods inherited from class java.lang.Object

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

Constructor Detail

OperationLog

public OperationLog(String name,
            File file,
            HiveConf hiveConf)
             throws FileNotFoundException

Throws:

FileNotFoundException

Method Detail

getLoggingLevel

public static OperationLog.LoggingLevel getLoggingLevel(String mode)

getOpLoggingLevel

public OperationLog.LoggingLevel getOpLoggingLevel()

setCurrentOperationLog

public static void setCurrentOperationLog(OperationLog operationLog)

getCurrentOperationLog

public static OperationLog getCurrentOperationLog()

removeCurrentOperationLog

public static void removeCurrentOperationLog()

writeOperationLog

public void writeOperationLog(String operationLogMessage)

Write operation execution logs into log file

Parameters:

operationLogMessage - one line of log emitted from log4j

readOperationLog

public List<String> readOperationLog(boolean isFetchFirst,
                            long maxRows)
                              throws SQLException

Read operation execution logs from log file

Parameters:

isFetchFirst - true if the Enum FetchOrientation value is Fetch_First

maxRows - the max number of fetched lines from log

Returns:

Throws:

SQLException

close

public void close()

Close this OperationLog when operation is closed. The log file will be removed.