93 lines
3.3 KiB
Plaintext
93 lines
3.3 KiB
Plaintext
[[indices-stats]]
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== Indices Stats
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Indices level stats provide statistics on different operations happening
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on an index. The API provides statistics on the index level scope
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(though most stats can also be retrieved using node level scope).
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The following returns high level aggregation and index level stats for
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all indices:
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[source,js]
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--------------------------------------------------
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curl localhost:9200/_stats
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--------------------------------------------------
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Specific index stats can be retrieved using:
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[source,js]
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--------------------------------------------------
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curl localhost:9200/index1,index2/_stats
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--------------------------------------------------
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By default, all stats are returned, returning only specific stats can be
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specified as well in the URI. Those stats can be any of:
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[horizontal]
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`docs`:: The number of docs / deleted docs (docs not yet merged out).
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Note, affected by refreshing the index.
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`store`:: The size of the index.
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`indexing`:: Indexing statistics, can be combined with a comma
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separated list of `types` to provide document type level stats.
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`get`:: Get statistics, including missing stats.
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`search`:: Search statistics. You can include statistics for custom groups by adding
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an extra `groups` parameter (search operations can be associated with one or more
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groups). The `groups` parameter accepts a comma separated list of group names.
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Use `_all` to return statistics for all groups.
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`completion`:: Completion suggest statistics.
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`fielddata`:: Fielddata statistics.
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`flush`:: Flush statistics.
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`merge`:: Merge statistics.
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`request_cache`:: <<shard-request-cache,Shard request cache>> statistics.
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`refresh`:: Refresh statistics.
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`suggest`:: Suggest statistics.
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`warmer`:: Warmer statistics.
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`translog`:: Translog statistics.
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Some statistics allow per field granularity which accepts a list
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comma-separated list of included fields. By default all fields are included:
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[horizontal]
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`fields`::
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List of fields to be included in the statistics. This is used as the
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default list unless a more specific field list is provided (see below).
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`completion_fields`::
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List of fields to be included in the Completion Suggest statistics.
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`fielddata_fields`::
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List of fields to be included in the Fielddata statistics.
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Here are some samples:
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[source,js]
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--------------------------------------------------
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# Get back stats for merge and refresh only for all indices
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curl 'localhost:9200/_stats/merge,refresh'
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# Get back stats for type1 and type2 documents for the my_index index
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curl 'localhost:9200/my_index/_stats/indexing?types=type1,type2
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# Get back just search stats for group1 and group2
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curl 'localhost:9200/_stats/search?groups=group1,group2
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--------------------------------------------------
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The stats returned are aggregated on the index level, with
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`primaries` and `total` aggregations, where `primaries` are the values for only the
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primary shards, and `total` are the cumulated values for both primary and replica shards.
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In order to get back shard level stats, set the `level` parameter to `shards`.
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Note, as shards move around the cluster, their stats will be cleared as
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they are created on other nodes. On the other hand, even though a shard
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"left" a node, that node will still retain the stats that shard
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contributed to.
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