Package org.apache.solr.search.stats

Class ExactSharedStatsCache

java.lang.Object

org.apache.solr.search.stats.StatsCache

org.apache.solr.search.stats.ExactStatsCache

org.apache.solr.search.stats.ExactSharedStatsCache

All Implemented Interfaces:

PluginInfoInitialized

public class ExactSharedStatsCache
extends ExactStatsCache

This class implements exact caching of statistics. It requires an additional round-trip to parse query at shard servers, and return term statistics for query terms (and collection statistics for term fields).

Global statistics are accumulated in the instance of this component (with the same life-cycle as SolrSearcher), in unbounded maps. NOTE: This may lead to excessive memory usage, in which case a LRUStatsCache should be considered.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.solr.search.stats.ExactStatsCache

ExactStatsCache.ExactStatsSource

Nested classes/interfaces inherited from class org.apache.solr.search.stats.StatsCache

StatsCache.StatsCacheMetrics

Field Summary

Fields inherited from class org.apache.solr.search.stats.StatsCache

COL_STATS_KEY, FIELDS_KEY, pluginInfo, statsCacheMetrics, TERM_STATS_KEY, TERMS_KEY

Constructor Summary

Constructors

Constructor	Description
ExactSharedStatsCache()

Method Summary

Modifier and Type	Method	Description
protected void	addToGlobalColStats(SolrQueryRequest req, Map.Entry<String,CollectionStats> e)
protected void	addToGlobalTermStats(SolrQueryRequest req, Map.Entry<String,TermStats> e)
protected void	addToPerShardColStats(SolrQueryRequest req, String shard, Map<String,CollectionStats> colStats)
protected void	addToPerShardTermStats(SolrQueryRequest req, String shard, String termStatsString)
void	clear()	Clear cached statistics.
protected StatsSource	doGet(SolrQueryRequest req)
protected Map<String,CollectionStats>	getPerShardColStats(ResponseBuilder rb, String shard)
protected TermStats	getPerShardTermStats(SolrQueryRequest req, String t, String shard)
protected void	printStats(SolrQueryRequest req)

Methods inherited from class org.apache.solr.search.stats.ExactStatsCache

doMergeToGlobalStats, doReceiveGlobalStats, doRetrieveStatsRequest, doReturnLocalStats, doSendGlobalStats

Methods inherited from class org.apache.solr.search.stats.StatsCache

approxCheckMissingStats, get, getCacheMetrics, init, mergeToGlobalStats, receiveGlobalStats, retrieveStatsRequest, returnLocalStats, sendGlobalStats

Methods inherited from class java.lang.Object

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

Constructor Detail

ExactSharedStatsCache

public ExactSharedStatsCache()

Method Detail

doGet

protected StatsSource doGet(SolrQueryRequest req)

Overrides:

doGet in class ExactStatsCache

clear

public void clear()

Description copied from class: StatsCache

Clear cached statistics.

Overrides:

clear in class StatsCache

addToPerShardColStats

protected void addToPerShardColStats(SolrQueryRequest req,
                                     String shard,
                                     Map<String,CollectionStats> colStats)

Overrides:

addToPerShardColStats in class ExactStatsCache

printStats

protected void printStats(SolrQueryRequest req)

Overrides:

printStats in class ExactStatsCache

addToPerShardTermStats

protected void addToPerShardTermStats(SolrQueryRequest req,
                                      String shard,
                                      String termStatsString)

Overrides:

addToPerShardTermStats in class ExactStatsCache

getPerShardColStats

protected Map<String,CollectionStats> getPerShardColStats(ResponseBuilder rb,
                                                                String shard)

Overrides:

getPerShardColStats in class ExactStatsCache

getPerShardTermStats

protected TermStats getPerShardTermStats(SolrQueryRequest req,
                                         String t,
                                         String shard)

Overrides:

getPerShardTermStats in class ExactStatsCache

addToGlobalColStats

protected void addToGlobalColStats(SolrQueryRequest req,
                                   Map.Entry<String,CollectionStats> e)

Overrides:

addToGlobalColStats in class ExactStatsCache

addToGlobalTermStats

protected void addToGlobalTermStats(SolrQueryRequest req,
                                    Map.Entry<String,TermStats> e)

Overrides:

addToGlobalTermStats in class ExactStatsCache