Package org.apache.druid.server.compaction

Class ReindexingPartitioningRule

java.lang.Object

org.apache.druid.server.compaction.AbstractReindexingRule

org.apache.druid.server.compaction.ReindexingPartitioningRule

All Implemented Interfaces:

ReindexingRule

public class ReindexingPartitioningRule
extends AbstractReindexingRule

A ReindexingRule that specifies partitioning configuration for reindexing tasks.

This rule controls how data is physically laid out into segments during reindexing, combining segment granularity (time bucketing) and partitions spec (how data within a time bucket is split). It also supports optional virtual columns for partitioning by nested column fields.

This is a non-additive rule. Multiple partitioning rules cannot be applied to the same interval.

Example inline usage:

 {
     "id": "daily-range-30d",
     "olderThan": "P30D",
     "segmentGranularity": "DAY",
     "partitionsSpec": {
       "type": "range",
       "targetRowsPerSegment": 5000000,
       "partitionDimensions": ["country", "city"]
     },
     "description": "Compact to daily segments with range partitioning for data older than 30 days"
 }
 

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.druid.server.compaction.ReindexingRule

ReindexingRule.AppliesToMode

Constructor Summary

Constructors

Constructor	Description
ReindexingPartitioningRule(String id, String description, org.joda.time.Period olderThan, Granularity segmentGranularity, PartitionsSpec partitionsSpec, VirtualColumns virtualColumns)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object o)
PartitionsSpec	getPartitionsSpec()
Granularity	getSegmentGranularity()
VirtualColumns	getVirtualColumns()
int	hashCode()
static ReindexingPartitioningRule	syntheticRule(Granularity segmentGranularity, PartitionsSpec partitionsSpec, VirtualColumns virtualColumns)	Creates a synthetic partitioning rule used to carry default partitioning configuration for intervals not covered by any user-defined partitioning rule.
String	toString()

Methods inherited from class org.apache.druid.server.compaction.AbstractReindexingRule

appliesTo, getDescription, getId, getOlderThan

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

ReindexingPartitioningRule

public ReindexingPartitioningRule(@Nonnull
 String id,
 @Nullable
 String description,
 @Nonnull
 org.joda.time.Period olderThan,
 @Nonnull
 Granularity segmentGranularity,
 @Nonnull
 PartitionsSpec partitionsSpec,
 @Nullable
 VirtualColumns virtualColumns)

Method Details

syntheticRule

public static ReindexingPartitioningRule syntheticRule(Granularity segmentGranularity,
 PartitionsSpec partitionsSpec,
 @Nullable
 VirtualColumns virtualColumns)

Creates a synthetic partitioning rule used to carry default partitioning configuration for intervals not covered by any user-defined partitioning rule.

Synthetic rules are created by org.apache.druid.indexing.compact.CascadingReindexingTemplate to represent the template's default segment granularity, partitions spec, and optional virtual columns. They use a fixed ID and zero-length period since these fields are not meaningful for synthetic rules — only the partitioning configuration (granularity, partitionsSpec, virtualColumns) is used.

getSegmentGranularity

public Granularity getSegmentGranularity()

getPartitionsSpec

public PartitionsSpec getPartitionsSpec()

getVirtualColumns

@Nullable
public VirtualColumns getVirtualColumns()

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object