org.apache.druid.indexer.path

Class MetadataStoreBasedUsedSegmentsRetriever

java.lang.Object

org.apache.druid.indexer.path.MetadataStoreBasedUsedSegmentsRetriever

All Implemented Interfaces:

UsedSegmentsRetriever

public class MetadataStoreBasedUsedSegmentsRetriever
extends Object
implements UsedSegmentsRetriever

Constructor Summary

Constructors

Constructor and Description
MetadataStoreBasedUsedSegmentsRetriever(IndexerMetadataStorageCoordinator indexerMetadataStorageCoordinator)

Method Summary

Modifier and Type	Method and Description
Collection<DataSegment>	retrieveUsedSegmentsForIntervals(String dataSource, List<org.joda.time.Interval> intervals, Segments visibility) Retrieve (potentially, from a remote node) all segments which may include any data in the interval and are marked as used.

Methods inherited from class java.lang.Object

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

Constructor Detail

MetadataStoreBasedUsedSegmentsRetriever

@Inject
public MetadataStoreBasedUsedSegmentsRetriever(IndexerMetadataStorageCoordinator indexerMetadataStorageCoordinator)

Method Detail

retrieveUsedSegmentsForIntervals

public Collection<DataSegment> retrieveUsedSegmentsForIntervals(String dataSource,
                                                                List<org.joda.time.Interval> intervals,
                                                                Segments visibility)

Description copied from interface: UsedSegmentsRetriever

Retrieve (potentially, from a remote node) all segments which may include any data in the interval and are marked as used. The order of segments within the returned collection is unspecified, but each segment is guaranteed to appear in the collection only once.

Specified by:

retrieveUsedSegmentsForIntervals in interface UsedSegmentsRetriever

Parameters:

dataSource - The datasource to query

intervals - The intervals for which used segments are to be returned

visibility - Whether only visible or visible as well as overshadowed segments should be returned. The visibility is considered within the specified intervals: that is, a segment which is visible outside of the specified intervals, but overshadowed on the specified intervals will not be returned if Segments.ONLY_VISIBLE is passed. See more precise description in the doc for Segments.

Returns:

The DataSegments which include data in the requested intervals. These segments may contain data outside the requested interval.