Package org.apache.iotdb.db.mpp.transformation.datastructure.row

Class ElasticSerializableRowRecordList

java.lang.Object

org.apache.iotdb.db.mpp.transformation.datastructure.row.ElasticSerializableRowRecordList

public class ElasticSerializableRowRecordList
extends java.lang.Object

An elastic list of records that implements memory control using LRU strategy.

Field Summary

Fields

Modifier and Type	Field	Description
protected java.util.List<org.apache.iotdb.tsfile.utils.BitMap>	bitMaps	Mark bitMaps of correct index when one row has at least one null field
protected int	byteArrayLengthForMemoryControl
protected org.apache.iotdb.db.mpp.transformation.datastructure.row.ElasticSerializableRowRecordList.LRUCache	cache
protected org.apache.iotdb.tsfile.file.metadata.enums.TSDataType[]	dataTypes
protected boolean	disableMemoryControl
protected int	evictionUpperBound
protected int[]	indexListOfTextFields
protected int	internalRowRecordListCapacity
protected static int	MEMORY_CHECK_THRESHOLD
protected float	memoryLimitInMB
protected int	numCacheBlock
protected long	queryId
protected java.util.List<SerializableRowRecordList>	rowRecordLists
protected int	size
protected long	totalByteArrayLength
protected long	totalByteArrayLengthLimit

Constructor Summary

Constructors

Modifier	Constructor	Description
	ElasticSerializableRowRecordList(org.apache.iotdb.tsfile.file.metadata.enums.TSDataType[] dataTypes, long queryId, float memoryLimitInMB, int numCacheBlock)	Construct a ElasticSerializableRowRecordList.
protected	ElasticSerializableRowRecordList(org.apache.iotdb.tsfile.file.metadata.enums.TSDataType[] dataTypes, long queryId, float memoryLimitInMB, int internalRowRecordListCapacity, int numCacheBlock)

Method Summary

Modifier and Type	Method	Description
protected void	applyNewMemoryControlParameters(int newByteArrayLengthForMemoryControl, int newInternalRowRecordListCapacity)
protected void	checkMemoryUsage()
boolean	fieldsHasAnyNull(int index)	true if any field except the timestamp in the current row is null
org.apache.iotdb.tsfile.file.metadata.enums.TSDataType[]	getDataTypes()
java.lang.Object[]	getRowRecord(int index)
long	getTime(int index)
void	put(java.lang.Object[] rowRecord)
void	setEvictionUpperBound(int evictionUpperBound)
int	size()

Methods inherited from class java.lang.Object

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

Field Detail

MEMORY_CHECK_THRESHOLD

protected static final int MEMORY_CHECK_THRESHOLD

See Also:

Constant Field Values

dataTypes

protected org.apache.iotdb.tsfile.file.metadata.enums.TSDataType[] dataTypes

queryId

protected long queryId

memoryLimitInMB

protected float memoryLimitInMB

internalRowRecordListCapacity

protected int internalRowRecordListCapacity

numCacheBlock

protected int numCacheBlock

cache

protected org.apache.iotdb.db.mpp.transformation.datastructure.row.ElasticSerializableRowRecordList.LRUCache cache

rowRecordLists

protected java.util.List<SerializableRowRecordList> rowRecordLists

bitMaps

protected java.util.List<org.apache.iotdb.tsfile.utils.BitMap> bitMaps

Mark bitMaps of correct index when one row has at least one null field

size

protected int size

evictionUpperBound

protected int evictionUpperBound

disableMemoryControl

protected boolean disableMemoryControl

indexListOfTextFields

protected int[] indexListOfTextFields

byteArrayLengthForMemoryControl

protected int byteArrayLengthForMemoryControl

totalByteArrayLengthLimit

protected long totalByteArrayLengthLimit

totalByteArrayLength

protected long totalByteArrayLength

Constructor Detail

ElasticSerializableRowRecordList

public ElasticSerializableRowRecordList(org.apache.iotdb.tsfile.file.metadata.enums.TSDataType[] dataTypes,
                                        long queryId,
                                        float memoryLimitInMB,
                                        int numCacheBlock)
                                 throws QueryProcessException

Construct a ElasticSerializableRowRecordList.

Parameters:

dataTypes - Data types of columns.

queryId - Query ID.

memoryLimitInMB - Memory limit.

numCacheBlock - Number of cache blocks.

Throws:

QueryProcessException

ElasticSerializableRowRecordList

protected ElasticSerializableRowRecordList(org.apache.iotdb.tsfile.file.metadata.enums.TSDataType[] dataTypes,
                                           long queryId,
                                           float memoryLimitInMB,
                                           int internalRowRecordListCapacity,
                                           int numCacheBlock)

Method Detail

size

public int size()

getDataTypes

public org.apache.iotdb.tsfile.file.metadata.enums.TSDataType[] getDataTypes()

getTime

public long getTime(int index)
             throws java.io.IOException

Throws:

java.io.IOException

getRowRecord

public java.lang.Object[] getRowRecord(int index)
                                throws java.io.IOException

Throws:

java.io.IOException

fieldsHasAnyNull

public boolean fieldsHasAnyNull(int index)

true if any field except the timestamp in the current row is null

put

public void put(java.lang.Object[] rowRecord)
         throws java.io.IOException,
                QueryProcessException

Throws:

java.io.IOException

QueryProcessException

checkMemoryUsage

protected void checkMemoryUsage()
                         throws java.io.IOException,
                                QueryProcessException

Throws:

java.io.IOException

QueryProcessException

applyNewMemoryControlParameters

protected void applyNewMemoryControlParameters(int newByteArrayLengthForMemoryControl,
                                               int newInternalRowRecordListCapacity)
                                        throws java.io.IOException,
                                               QueryProcessException

Throws:

java.io.IOException

QueryProcessException

setEvictionUpperBound

public void setEvictionUpperBound(int evictionUpperBound)

Parameters:

evictionUpperBound - the index of the first element that cannot be evicted. in other words, elements whose index are less than the evictionUpperBound can be evicted.