org.apache.hadoop.hive.ql.io.orc
Class OrcRecordUpdater

java.lang.Object
  org.apache.hadoop.hive.ql.io.orc.OrcRecordUpdater

All Implemented Interfaces:

RecordUpdater

public class OrcRecordUpdater
extends Object
implements RecordUpdater

A RecordUpdater where the files are stored as ORC.

Nested Class Summary

static class

OrcRecordUpdater.OrcOptions An extension to AcidOutputFormat that allows users to add additional options.

Field Summary

static String	ACID_FORMAT
static String	ACID_KEY_INDEX_NAME
static String	ACID_STATS
static int	ORC_ACID_VERSION

Method Summary

void	close(boolean abort) Close this updater.
void	delete(long currentTransaction, long originalTransaction, long rowId) Delete a row from the table.
void	flush() Flush the current set of rows to the underlying file system, so that they are available to readers.
SerDeStats	getStats() Returns the statistics information
void	insert(long currentTransaction, Object row) Insert a new record into the table.
void	update(long currentTransaction, long originalTransaction, long rowId, Object row) Update an old record with a new set of values.

Methods inherited from class java.lang.Object

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

Field Detail

ACID_KEY_INDEX_NAME

public static final String ACID_KEY_INDEX_NAME

See Also:

Constant Field Values

ACID_FORMAT

public static final String ACID_FORMAT

See Also:

Constant Field Values

ACID_STATS

public static final String ACID_STATS

See Also:

Constant Field Values

ORC_ACID_VERSION

public static final int ORC_ACID_VERSION

See Also:

Constant Field Values

Method Detail

insert

public void insert(long currentTransaction,
                   Object row)
            throws IOException

Description copied from interface: RecordUpdater

Insert a new record into the table.

Specified by:

insert in interface RecordUpdater

Parameters:

currentTransaction - the transaction id of the current transaction.

row - the row of data to insert

Throws:

IOException

update

public void update(long currentTransaction,
                   long originalTransaction,
                   long rowId,
                   Object row)
            throws IOException

Description copied from interface: RecordUpdater

Update an old record with a new set of values.

Specified by:

update in interface RecordUpdater

Parameters:

currentTransaction - the current transaction id

originalTransaction - the row's original transaction id

rowId - the original row id

row - the new values for the row

Throws:

IOException

delete

public void delete(long currentTransaction,
                   long originalTransaction,
                   long rowId)
            throws IOException

Description copied from interface: RecordUpdater

Delete a row from the table.

Specified by:

delete in interface RecordUpdater

Parameters:

currentTransaction - the current transaction id

originalTransaction - the rows original transaction id

rowId - the original row id

Throws:

IOException

flush

public void flush()
           throws IOException

Description copied from interface: RecordUpdater

Flush the current set of rows to the underlying file system, so that they are available to readers. Most implementations will need to write additional state information when this is called, so it should only be called during streaming when a transaction is finished, but the RecordUpdater can't be closed yet.

Specified by:

flush in interface RecordUpdater

Throws:

IOException

close

public void close(boolean abort)
           throws IOException

Description copied from interface: RecordUpdater

Close this updater. No further calls are legal after this.

Specified by:

close in interface RecordUpdater

Parameters:

abort - Can the data since the last flush be discarded?

Throws:

IOException

getStats

public SerDeStats getStats()

Description copied from interface: RecordUpdater

Returns the statistics information

Specified by:

getStats in interface RecordUpdater

Returns:

SerDeStats