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Andrzej Bialecki commented on SOLR-9898: ----------------------------------------- h1. Index merge metrics These metrics are collected in respective registries for each core, under the {{INDEX}} category. Basic metrics are always collected - collection of additional metrics can be turned on using boolean parameters in the {{/config/indexConfig/metrics}} section of {{solrconfig.xml}}: {code} <config> ... <indexConfig> <metrics> <majorMergeDocs>524288</majorMergeDocs> <bool name="mergeDetails">true</bool> <bool name="directoryDetails">true</bool> </metrics> ... </indexConfig> ... </config> {code} The following metrics are collected: * {{INDEX.merge.major}} - timer for merge operations that include at least "majorMergeDocs" (default value for this parameter is 512k documents). * {{INDEX.merge.minor}} - timer for merge operations that include less than "majorMergeDocs". * {{INDEX.merge.errors}} - counter for merge errors. * {{INDEX.flush}} - meter for index flush operations. Additionally, the following gauges are reported, which help to monitor the momentary state of index merge operations: * {{INDEX.merge.major.running}} - number of running major merge operations (depending on the implementation of {{MergeScheduler}} that is used there can be several concurrently running merge operations). * {{INDEX.merge.minor.running}} - as above, for minor merge operations. * {{INDEX.merge.major.running.docs}} - total number of documents in the segments being currently merged in major merge operations. * {{INDEX.merge.minor.running.docs}} - as above, for minor merge operations. * {{INDEX.merge.major.running.segments}} - number of segments being currently merged in major merge operations. * {{INDEX.merge.minor.running.segments}} - as above, for minor merge operations. If the boolean flag {{mergeDetails}} is true then the following additional metrics are collected: * {{INDEX.merge.major.docs}} - meter for the number of documents merged in major merge operations * {{INDEX.merge.major.deletedDocs}} - meter for the number of deleted documents expunged in major merge operations > Documentation for metrics collection and /admin/metrics > ------------------------------------------------------- > > Key: SOLR-9898 > URL: https://issues.apache.org/jira/browse/SOLR-9898 > Project: Solr > Issue Type: Task > Security Level: Public(Default Security Level. Issues are Public) > Components: documentation > Affects Versions: master (7.0), 6.4 > Reporter: Andrzej Bialecki > Assignee: Cassandra Targett > > Draft documentation follows. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org