@Inject
public LogByteSizeMergePolicyProvider(Store store, IndexSettingsService indexSettingsService) {
super(store.shardId(), store.indexSettings());
Preconditions.checkNotNull(store, "Store must be provided to merge policy");
this.indexSettingsService = indexSettingsService;
this.compoundFormat =
indexSettings.getAsBoolean("index.compound_format", store.suggestUseCompoundFile());
this.minMergeSize =
componentSettings.getAsBytesSize(
"min_merge_size",
new ByteSizeValue(
(long) (LogByteSizeMergePolicy.DEFAULT_MIN_MERGE_MB * 1024 * 1024),
ByteSizeUnit.BYTES));
this.maxMergeSize =
componentSettings.getAsBytesSize(
"max_merge_size",
new ByteSizeValue((long) LogByteSizeMergePolicy.DEFAULT_MAX_MERGE_MB, ByteSizeUnit.MB));
this.mergeFactor =
componentSettings.getAsInt("merge_factor", LogByteSizeMergePolicy.DEFAULT_MERGE_FACTOR);
this.maxMergeDocs =
componentSettings.getAsInt("max_merge_docs", LogByteSizeMergePolicy.DEFAULT_MAX_MERGE_DOCS);
this.calibrateSizeByDeletes = componentSettings.getAsBoolean("calibrate_size_by_deletes", true);
this.asyncMerge = indexSettings.getAsBoolean("index.merge.async", true);
logger.debug(
"using [log_bytes_size] merge policy with merge_factor[{}], min_merge_size[{}], max_merge_size[{}], max_merge_docs[{}], calibrate_size_by_deletes[{}], async_merge[{}]",
mergeFactor,
minMergeSize,
maxMergeSize,
maxMergeDocs,
calibrateSizeByDeletes,
asyncMerge);
indexSettingsService.addListener(applySettings);
}
@Inject
public TieredMergePolicyProvider(Store store, IndexSettingsService indexSettingsService) {
super(store.shardId(), store.indexSettings());
this.indexSettingsService = indexSettingsService;
this.compoundFormat =
indexSettings.getAsBoolean("index.compound_format", store.suggestUseCompoundFile());
this.asyncMerge = indexSettings.getAsBoolean("index.merge.async", true);
this.forceMergeDeletesPctAllowed =
componentSettings.getAsDouble("expunge_deletes_allowed", 10d); // percentage
this.floorSegment =
componentSettings.getAsBytesSize("floor_segment", new ByteSizeValue(2, ByteSizeUnit.MB));
this.maxMergeAtOnce = componentSettings.getAsInt("max_merge_at_once", 10);
this.maxMergeAtOnceExplicit = componentSettings.getAsInt("max_merge_at_once_explicit", 30);
// TODO is this really a good default number for max_merge_segment, what happens for large
// indices, won't they end up with many segments?
this.maxMergedSegment =
componentSettings.getAsBytesSize(
"max_merged_segment",
componentSettings.getAsBytesSize(
"max_merge_segment", new ByteSizeValue(5, ByteSizeUnit.GB)));
this.segmentsPerTier = componentSettings.getAsDouble("segments_per_tier", 10.0d);
this.reclaimDeletesWeight = componentSettings.getAsDouble("reclaim_deletes_weight", 2.0d);
fixSettingsIfNeeded();
logger.debug(
"using [tiered] merge policy with expunge_deletes_allowed[{}], floor_segment[{}], max_merge_at_once[{}], max_merge_at_once_explicit[{}], max_merged_segment[{}], segments_per_tier[{}], reclaim_deletes_weight[{}], async_merge[{}]",
forceMergeDeletesPctAllowed,
floorSegment,
maxMergeAtOnce,
maxMergeAtOnceExplicit,
maxMergedSegment,
segmentsPerTier,
reclaimDeletesWeight,
asyncMerge);
indexSettingsService.addListener(applySettings);
}