Package org.apache.pinot.broker.routing.segmentpartition

Class SegmentPartitionMetadataManager

java.lang.Object

org.apache.pinot.broker.routing.segmentpartition.SegmentPartitionMetadataManager

All Implemented Interfaces:

SegmentZkMetadataFetchListener

public class SegmentPartitionMetadataManager
extends Object
implements SegmentZkMetadataFetchListener

The PartitionDataManager manages partitions of a table. It manages 1. all the online segments associated with the partition and their allocated servers 2. all the replica of a specific segment. It provides API to query 1. For each partition ID, what are the servers that contains ALL segments belong to this partition ID. 2. For each server, what are all the partition IDs and list of segments of those partition IDs on this server.

Constructor Summary

Constructors

Constructor	Description
SegmentPartitionMetadataManager(String tableNameWithType, String partitionColumn, String partitionFunctionName, int numPartitions)

Method Summary

Modifier and Type	Method	Description
TablePartitionInfo	getTablePartitionInfo()
void	init(org.apache.helix.model.IdealState idealState, org.apache.helix.model.ExternalView externalView, List<String> onlineSegments, List<org.apache.helix.zookeeper.datamodel.ZNRecord> znRecords)	Initializes the segment pruner with the ideal state, external view and online segments (segments with ONLINE/CONSUMING instances in the ideal state and pre-selected by the SegmentPreSelector).
void	onAssignmentChange(org.apache.helix.model.IdealState idealState, org.apache.helix.model.ExternalView externalView, Set<String> onlineSegments, List<String> pulledSegments, List<org.apache.helix.zookeeper.datamodel.ZNRecord> znRecords)	Processes the segment assignment (ideal state or external view) change based on the given online segments (segments with ONLINE/CONSUMING instances in the ideal state and pre-selected by the SegmentPreSelector).
void	refreshSegment(String segment, org.apache.helix.zookeeper.datamodel.ZNRecord znRecord)	Refreshes the metadata for the given segment (called when segment is getting refreshed).

Methods inherited from class java.lang.Object

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

Constructor Detail

SegmentPartitionMetadataManager

public SegmentPartitionMetadataManager(String tableNameWithType,
                                       String partitionColumn,
                                       String partitionFunctionName,
                                       int numPartitions)

Method Detail

init

public void init(org.apache.helix.model.IdealState idealState,
                 org.apache.helix.model.ExternalView externalView,
                 List<String> onlineSegments,
                 List<org.apache.helix.zookeeper.datamodel.ZNRecord> znRecords)

Description copied from interface: SegmentZkMetadataFetchListener

Initializes the segment pruner with the ideal state, external view and online segments (segments with ONLINE/CONSUMING instances in the ideal state and pre-selected by the SegmentPreSelector). Should be called only once before calling other methods.

Specified by:

init in interface SegmentZkMetadataFetchListener

onAssignmentChange

public void onAssignmentChange(org.apache.helix.model.IdealState idealState,
                               org.apache.helix.model.ExternalView externalView,
                               Set<String> onlineSegments,
                               List<String> pulledSegments,
                               List<org.apache.helix.zookeeper.datamodel.ZNRecord> znRecords)

Description copied from interface: SegmentZkMetadataFetchListener

Processes the segment assignment (ideal state or external view) change based on the given online segments (segments with ONLINE/CONSUMING instances in the ideal state and pre-selected by the SegmentPreSelector).

Specified by:

onAssignmentChange in interface SegmentZkMetadataFetchListener

refreshSegment

public void refreshSegment(String segment,
                           @Nullable
                           org.apache.helix.zookeeper.datamodel.ZNRecord znRecord)

Description copied from interface: SegmentZkMetadataFetchListener

Refreshes the metadata for the given segment (called when segment is getting refreshed).

Specified by:

refreshSegment in interface SegmentZkMetadataFetchListener

getTablePartitionInfo

public TablePartitionInfo getTablePartitionInfo()