anchor.diff:  ---------------------------------------------------------------------------
   // TESTRESPONSE[non_json]
   
  -[float]
  +The `RELOCATING` value in `state` column indicates the index shard is
  +relocating.
  +
   [[states]]
  -==== Shard states
  -
  -Before a shard can be used, it goes through an `INITIALIZING` state.
  -`shards` can show you which ones.
  +===== Example with a shard states
  +
  +Before a shard is available for use, it goes through an `INITIALIZING` state.
  +You can use the cat shards API to see which shards are initializing.
   
   [source,js]
   ---------------------------------------------------------------------------
  
positive.code: // CONSOLE
  // TEST[setup:twitter]
  
  Which will return the following
  
  [source,txt]
  ---------------------------------------------------------------------------
  
negative.code: shards.  It will tell you if it's a primary or replica, the number of
  docs, the bytes it takes on disk, and the node where it's located.
  
  
  [[cat-shards-api-request]]
  ==== {api-request-title}
  
  `GET /_cat/shards/{index}`
  
  
  [[cat-shards-path-params]]
  ==== {api-path-parms-title}
  
  include::{docdir}/rest-api/common-parms.asciidoc[tag=index]
  
  
  [[cat-shards-query-params]]
  ==== {api-query-parms-title}
  
  include::{docdir}/rest-api/common-parms.asciidoc[tag=bytes]
  
  include::{docdir}/rest-api/common-parms.asciidoc[tag=http-format]
  
  include::{docdir}/rest-api/common-parms.asciidoc[tag=cat-h]
  +
  --
  If you do not specify which columns to include, the API returns the default
  columns in the order listed below. If you explicitly specify one or more
  columns, it only returns the specified columns.
  
  Valid columns are:
  
  `index`, `i`, `idx`::
  (Default) Name of the index, such as `twitter`.
  
  `shard`, `s`, `sh`::
  (Default) Name of the shard.
  
  `prirep`, `p`, `pr`, `primaryOrReplica`::
  (Default) Shard type. Returned values are `primary` or `replica`.
  
  `state`, `st`::
  (Default) State of the shard. Returned values are:
  +
  * `INITIALIZING`: The shard is recovering from a peer shard or gateway.
  * `RELOCATING`: The shard is relocating.
  * `STARTED`: The shard has started.
  * `UNASSIGNED`: The shard is not assigned to any node.
  
  `docs`, `d`, `dc`::
  (Default) Number of documents in shard, such as `25`.
  
  `store`, `sto`::
  (Default) Disk space used by the shard, such as `5kb`.
  
  `ip`::
  (Default) IP address of the node, such as `127.0.1.1`.
  
  `id`::
  (Default) ID of the node, such as `k0zy`.
  
  `node`, `n`::
  (Default) Node name, such as `I8hydUG`.
  
  `completion.size`, `cs`, `completionSize`::
  Size of completion, such as `0b`.
  
  `fielddata.memory_size`, `fm`, `fielddataMemory`::
  Used fielddata cache memory, such as `0b`.
  
  `fielddata.evictions`, `fe`, `fielddataEvictions`::
  Fielddata cache evictions, such as `0`.
  
  `flush.total`, `ft`, `flushTotal`::
  Number of flushes, such as `1`.
  
  `flush.total_time`, `ftt`, `flushTotalTime`::
  Time spent in flush, such as `1`.
  
  `get.current`, `gc`, `getCurrent`::
  Number of current get operations, such as `0`.
  
  `get.time`, `gti`, `getTime`::
  Time spent in get, such as `14ms`.
  
  `get.total`, `gto`, `getTotal`::
  Number of get operations, such as `2`.
  
  `get.exists_time`, `geti`, `getExistsTime`::
  Time spent in successful gets, such as `14ms`.
  
  `get.exists_total`, `geto`, `getExistsTotal`::
  Number of successful get operations, such as `2`.
  
  `get.missing_time`, `gmti`, `getMissingTime`::
  Time spent in failed gets, such as `0s`.
  
  `get.missing_total`, `gmto`, `getMissingTotal`::
  Number of failed get operations, such as `1`.
  
  `indexing.delete_current`, `idc`, `indexingDeleteCurrent`::
  Number of current deletion operations, such as `0`.
  
  `indexing.delete_time`, `idti`, `indexingDeleteTime`::
  Time spent in deletions, such as `2ms`.
  
  `indexing.delete_total`, `idto`, `indexingDeleteTotal`::
  Number of deletion operations, such as `2`.
  
  `indexing.index_current`, `iic`, `indexingIndexCurrent`::
  Number of current indexing operations, such as `0`.
  
  `indexing.index_time`, `iiti`, `indexingIndexTime`::
  Time spent in indexing, such as `134ms`.
  
  `indexing.index_total`, `iito`, `indexingIndexTotal`::
  Number of indexing operations, such as `1`.
  
  `indexing.index_failed`, `iif`, `indexingIndexFailed`::
  Number of failed indexing operations, such as `0`.
  
  `merges.current`, `mc`, `mergesCurrent`::
  Number of current merge operations, such as `0`.
  
  `merges.current_docs`, `mcd`, `mergesCurrentDocs`::
  Number of current merging documents, such as `0`.
  
  `merges.current_size`, `mcs`, `mergesCurrentSize`::
  Size of current merges, such as `0b`.
  
  `merges.total`, `mt`, `mergesTotal`::
  Number of completed merge operations, such as `0`.
  
  `merges.total_docs`, `mtd`, `mergesTotalDocs`::
  Number of merged documents, such as `0`.
  
  `merges.total_size`, `mts`, `mergesTotalSize`::
  Size of current merges, such as `0b`.
  
  `merges.total_time`, `mtt`, `mergesTotalTime`::
  Time spent merging documents, such as `0s`.
  
  `query_cache.memory_size`, `qcm`, `queryCacheMemory`::
  Used query cache memory, such as `0b`.
  
  `query_cache.evictions`, `qce`, `queryCacheEvictions`::
  Query cache evictions, such as `0`.
  
  `recoverysource.type`, `rs`::
  Type of recovery source.
  
  `refresh.total`, `rto`, `refreshTotal`::
  Number of refreshes, such as `16`.
  
  `refresh.time`, `rti`, `refreshTime`::
  Time spent in refreshes, such as `91ms`.
  
  `search.fetch_current`, `sfc`, `searchFetchCurrent`::
  Current fetch phase operations, such as `0`.
  
  `search.fetch_time`, `sfti`, `searchFetchTime`::
  Time spent in fetch phase, such as `37ms`.
  
  `search.fetch_total`, `sfto`, `searchFetchTotal`::
  Number of fetch operations, such as `7`.
  
  `search.open_contexts`, `so`, `searchOpenContexts`::
  Open search contexts, such as `0`.
  
  `search.query_current`, `sqc`, `searchQueryCurrent`::
  Current query phase operations, such as `0`.
  
  `search.query_time`, `sqti`, `searchQueryTime`::
  Time spent in query phase, such as `43ms`.
  
  `search.query_total`, `sqto`, `searchQueryTotal`::
  Number of query operations, such as `9`.
  
  `search.scroll_current`, `scc`, `searchScrollCurrent`::
  Open scroll contexts, such as `2`.
  
  `search.scroll_time`, `scti`, `searchScrollTime`::
  Time scroll contexts held open, such as `2m`.
  
  `search.scroll_total`, `scto`, `searchScrollTotal`::
  Completed scroll contexts, such as `1`.
  
  `segments.count`, `sc`, `segmentsCount`::
  Number of segments, such as `4`.
  
  `segments.memory`, `sm`, `segmentsMemory`::
  Memory used by segments, such as `1.4kb`.
  
  `segments.index_writer_memory`, `siwm`, `segmentsIndexWriterMemory`::
  Memory used by index writer, such as `18mb`.
  
  `segments.version_map_memory`, `svmm`, `segmentsVersionMapMemory`::
  Memory used by version map, such as `1.0kb`.
  
  `segments.fixed_bitset_memory`, `sfbm`, `fixedBitsetMemory`::
  Memory used by fixed bit sets for nested object field types and type filters for
  types referred in <<parent-join,`join`>> fields, such as `1.0kb`.
  
  `seq_no.global_checkpoint`, `sqg`, `globalCheckpoint`::
  Global checkpoint.
  
  `seq_no.local_checkpoint`, `sql`, `localCheckpoint`::
  Local checkpoint.
  
  `seq_no.max`, `sqm`, `maxSeqNo`::
  Maximum sequence number.
  
  `suggest.current`, `suc`, `suggestCurrent`::
  Number of current suggest operations, such as `0`.
  
  `suggest.time`, `suti`, `suggestTime`::
  Time spent in suggest, such as `0`.
  
  `suggest.total`, `suto`, `suggestTotal`::
  Number of suggest operations, such as `0`.
  
  `sync_id`::
  Sync ID of the shard.
  
  `unassigned.at`, `ua`::
  Time at which the shard became unassigned in
  https://en.wikipedia.org/wiki/List_of_UTC_time_offsets[Coordinated Universal
  Time (UTC)].
  
  `unassigned.details`, `ud`::
  Details about why the shard became unassigned.
  
  `unassigned.for`, `ua`::
  Time at which the shard was requested to be unassigned in
  https://en.wikipedia.org/wiki/List_of_UTC_time_offsets[Coordinated Universal
  Time (UTC)].
  
  [[reason-unassigned]]
  `unassigned.reason`, `ur`::
  Reason the shard is unassigned. Returned values are:
  +
  * `ALLOCATION_FAILED`: Unassigned as a result of a failed allocation of the shard.
  * `CLUSTER_RECOVERED`: Unassigned as a result of a full cluster recovery.
  * `DANGLING_INDEX_IMPORTED`: Unassigned as a result of importing a dangling index.
  * `EXISTING_INDEX_RESTORED`: Unassigned as a result of restoring into a closed index.
  * `INDEX_CREATED`: Unassigned as a result of an API creation of an index.
  * `INDEX_REOPENED`: Unassigned as a result of opening a closed index.
  * `NEW_INDEX_RESTORED`: Unassigned as a result of restoring into a new index.
  * `NODE_LEFT`: Unassigned as a result of the node hosting it leaving the cluster.
  * `REALLOCATED_REPLICA`: A better replica location is identified and causes the existing replica allocation to be cancelled.
  * `REINITIALIZED`: When a shard moves from started back to initializing, for example, with shadow replicas.
  * `REPLICA_ADDED`: Unassigned as a result of explicit addition of a replica.
  * `REROUTE_CANCELLED`: Unassigned as a result of explicit cancel reroute command.
  
  --
  
  include::{docdir}/rest-api/common-parms.asciidoc[tag=help]
  
  include::{docdir}/rest-api/common-parms.asciidoc[tag=local]
  
  include::{docdir}/rest-api/common-parms.asciidoc[tag=master-timeout]
  
  include::{docdir}/rest-api/common-parms.asciidoc[tag=cat-s]
  
  include::{docdir}/rest-api/common-parms.asciidoc[tag=cat-v]
  
  
  [[cat-shards-api-example]]
  ==== {api-examples-title}
  
  [[cat-shards-api-example-single]]
  ===== Example with a single index
  
  [source,js]
  ---------------------------------------------------------------------------
  