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Indices Recovery
editIndices Recovery
editThe indices recovery API provides insight into on-going index shard recoveries. Recovery status may be reported for specific indices, or cluster-wide.
For example, the following command would show recovery information for the indices "index1" and "index2".
curl -XGET http://localhost:9200/index1,index2/_recovery?pretty=true
To see cluster-wide recovery status simply leave out the index names.
curl -XGET http://localhost:9200/_recovery?pretty=true
Response:
{ "index1" : { "shards" : [ { "id" : 0, "type" : "snapshot", "stage" : "index", "primary" : true, "start_time" : "2014-02-24T12:15:59.716", "stop_time" : 0, "total_time_in_millis" : 175576, "source" : { "repository" : "my_repository", "snapshot" : "my_snapshot", "index" : "index1" }, "target" : { "id" : "ryqJ5lO5S4-lSFbGntkEkg", "hostname" : "my.fqdn", "ip" : "10.0.1.7", "name" : "my_es_node" }, "index" : { "files" : { "total" : 73, "reused" : 0, "recovered" : 69, "percent" : "94.5%" }, "bytes" : { "total" : 79063092, "reused" : 0, "recovered" : 68891939, "percent" : "87.1%" }, "total_time_in_millis" : 0 }, "translog" : { "recovered" : 0, "total_time_in_millis" : 0 }, "start" : { "check_index_time" : 0, "total_time_in_millis" : 0 } } ] } }
The above response shows a single index recovering a single shard. In this case, the source of the recovery is a snapshot repository and the target of the recovery is the node with name "my_es_node".
Additionally, the output shows the number and percent of files recovered, as well as the number and percent of bytes recovered.
In some cases a higher level of detail may be preferable. Setting "detailed=true" will present a list of physical files in recovery.
curl -XGET http://localhost:9200/_recovery?pretty=true&detailed=true
Response:
{ "index1" : { "shards" : [ { "id" : 0, "type" : "gateway", "stage" : "done", "primary" : true, "start_time" : "2014-02-24T12:38:06.349", "stop_time" : "2014-02-24T12:38:08.464", "total_time_in_millis" : 2115, "source" : { "id" : "RGMdRc-yQWWKIBM4DGvwqQ", "hostname" : "my.fqdn", "ip" : "10.0.1.7", "name" : "my_es_node" }, "target" : { "id" : "RGMdRc-yQWWKIBM4DGvwqQ", "hostname" : "my.fqdn", "ip" : "10.0.1.7", "name" : "my_es_node" }, "index" : { "files" : { "total" : 26, "reused" : 26, "recovered" : 26, "percent" : "100.0%", "details" : [ { "name" : "segments.gen", "length" : 20, "recovered" : 20 }, { "name" : "_0.cfs", "length" : 135306, "recovered" : 135306 }, { "name" : "segments_2", "length" : 251, "recovered" : 251 }, ... ] }, "bytes" : { "total" : 26001617, "reused" : 26001617, "recovered" : 26001617, "percent" : "100.0%" }, "total_time_in_millis" : 2 }, "translog" : { "recovered" : 71, "total_time_in_millis" : 2025 }, "start" : { "check_index_time" : 0, "total_time_in_millis" : 88 } } ] } }
This response shows a detailed listing (truncated for brevity) of the actual files recovered and their sizes.
Also shown are the timings in milliseconds of the various stages of recovery: index retrieval, translog replay, and index start time.
Note that the above listing indicates that the recovery is in stage "done". All recoveries, whether on-going or complete, are kept in cluster state and may be reported on at any time. Setting "active_only=true" will cause only on-going recoveries to be reported.
Here is a complete list of options:
|
Display a detailed view. This is primarily useful for viewing the recovery of physical index files. Default: false. |
|
Display only those recoveries that are currently on-going. Default: false. |
Description of output fields:
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Shard ID |
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Recovery type:
|
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Recovery stage:
|
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True if shard is primary, false otherwise |
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Timestamp of recovery start |
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Timestamp of recovery finish |
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Total time to recover shard in milliseconds |
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Recovery source:
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Destination node |
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Statistics about physical index recovery |
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Statistics about translog recovery |
|
Statistics about time to open and start the index |