Uses of Interface
org.apache.paimon.mergetree.compact.MergeFunction

Packages that use MergeFunction

Package	Description
org.apache.paimon.mergetree
org.apache.paimon.mergetree.compact
org.apache.paimon.mergetree.compact.aggregate

Uses of MergeFunction in org.apache.paimon.mergetree

Methods in org.apache.paimon.mergetree with parameters of type MergeFunction

Modifier and Type	Method and Description
void	WriteBuffer.forEach(Comparator<InternalRow> keyComparator, MergeFunction<KeyValue> mergeFunction, WriteBuffer.KvConsumer rawConsumer, WriteBuffer.KvConsumer mergedConsumer) Performs the given action for each remaining element in this buffer until all elements have been processed or the action throws an exception.
void	SortBufferWriteBuffer.forEach(Comparator<InternalRow> keyComparator, MergeFunction<KeyValue> mergeFunction, WriteBuffer.KvConsumer rawConsumer, WriteBuffer.KvConsumer mergedConsumer)

Constructors in org.apache.paimon.mergetree with parameters of type MergeFunction

Constructor and Description

MergeTreeWriter(boolean writeBufferSpillable, MemorySize maxDiskSize, int sortMaxFan, CompressOptions sortCompression, IOManager ioManager, CompactManager compactManager, long maxSequenceNumber, Comparator<InternalRow> keyComparator, MergeFunction<KeyValue> mergeFunction, KeyValueFileWriterFactory writerFactory, boolean commitForceCompact, CoreOptions.ChangelogProducer changelogProducer, CommitIncrement increment, FieldsComparator userDefinedSeqComparator)

Uses of MergeFunction in org.apache.paimon.mergetree.compact

Classes in org.apache.paimon.mergetree.compact that implement MergeFunction

Modifier and Type	Class and Description
class	DeduplicateMergeFunction A MergeFunction where key is primary key (unique) and value is the full record, only keep the latest one.
class	FirstRowMergeFunction A MergeFunction where key is primary key (unique) and value is the full record, only keep the first one.
class	LookupMergeFunction A MergeFunction for lookup, this wrapper only considers the latest high level record, because each merge will query the old merged record, so the latest high level record should be the final merged value.
class	PartialUpdateMergeFunction A MergeFunction where key is primary key (unique) and value is the partial record, update non-null fields on merge.

Methods in org.apache.paimon.mergetree.compact that return MergeFunction

Modifier and Type	Method and Description
default MergeFunction<T>	MergeFunctionFactory.create()
MergeFunction<T>	MergeFunctionFactory.create(int[][] projection)

Constructors in org.apache.paimon.mergetree.compact with parameters of type MergeFunction

Constructor and Description
FullChangelogMergeFunctionWrapper(MergeFunction<KeyValue> mergeFunction, int maxLevel, RecordEqualiser valueEqualiser)
LookupMergeFunction(MergeFunction<KeyValue> mergeFunction, RowType keyType, RowType valueType)
ReducerMergeFunctionWrapper(MergeFunction<KeyValue> mergeFunction)

Uses of MergeFunction in org.apache.paimon.mergetree.compact.aggregate

Classes in org.apache.paimon.mergetree.compact.aggregate that implement MergeFunction

Modifier and Type	Class and Description
class	AggregateMergeFunction A MergeFunction where key is primary key (unique) and value is the partial record, pre-aggregate non-null fields on merge.