[ 
https://issues.apache.org/jira/browse/SOLR-6325?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Shalin Shekhar Mangar updated SOLR-6325:
----------------------------------------

    Attachment: SOLR-6325.patch

Here's a rough patch which returns per-shard statistics:

{code}
curl 
'http://localhost:8983/solr/admin/collections?action=clusterstatus&stats=true&name=collection1&shard=shard1&wt=json&indent=on'
{code}

{code}
{
  "responseHeader":{
    "status":0,
    "QTime":2023},
  "cluster":{
    "collections":{
      "collection1":{
        "shards":{"shard1":{
            "range":"80000000-ffffffff",
            "state":"active",
            "replicas":{"core_node1":{
                "state":"active",
                "base_url":"http://127.0.1.1:8983/solr";,
                "core":"collection1",
                "node_name":"127.0.1.1:8983_solr",
                "leader":"true"}},
            "/update":{
              "75thPcRequestTime":0.0,
              "15minRateReqsPerSecond":0.0,
              "999thPcRequestTime":0.0,
              "99thPcRequestTime":0.0,
              "95thPcRequestTime":0.0,
              "5minRateReqsPerSecond":0.0,
              "timeouts":0,
              "requests":0,
              "avgRequestsPerSecond":0.0,
              "errors":0,
              "avgTimePerRequest":0.0,
              "medianRequestTime":0.0,
              "handlerStart":1407367247133,
              "totalTime":0.0},
            "/select":{
              "75thPcRequestTime":26.804607,
              "15minRateReqsPerSecond":0.19779007785878447,
              "999thPcRequestTime":26.804607,
              "99thPcRequestTime":26.804607,
              "95thPcRequestTime":26.804607,
              "5minRateReqsPerSecond":0.1934432200964012,
              "timeouts":0,
              "requests":1,
              "avgRequestsPerSecond":0.05091259561701815,
              "errors":0,
              "avgTimePerRequest":26.804607,
              "medianRequestTime":26.804607,
              "handlerStart":1407367247129,
              "totalTime":26.804607},
            "/get":{
              "75thPcRequestTime":0.0,
              "15minRateReqsPerSecond":0.0,
              "999thPcRequestTime":0.0,
              "99thPcRequestTime":0.0,
              "95thPcRequestTime":0.0,
              "5minRateReqsPerSecond":0.0,
              "timeouts":0,
              "requests":0,
              "avgRequestsPerSecond":0.0,
              "errors":0,
              "avgTimePerRequest":0.0,
              "medianRequestTime":0.0,
              "handlerStart":1407367247131,
              "totalTime":0.0},
            "/replication":{
              "15minRateReqsPerSecond":0.0,
              "75thPcRequestTime":0.0,
              "999thPcRequestTime":0.0,
              "isSlave":"false",
              "99thPcRequestTime":0.0,
              "95thPcRequestTime":0.0,
              "replicateAfter":["commit"],
              "5minRateReqsPerSecond":0.0,
              
"indexPath":"/home/shalin/work/oss/shalin-lusolr/solr/example1/solr/collection1/data/index/",
              "replicationEnabled":"true",
              "timeouts":0,
              "requests":0,
              "avgRequestsPerSecond":0.0,
              "errors":0,
              "avgTimePerRequest":0.0,
              "indexSize":"89 bytes",
              "indexVersion":0,
              "isMaster":"true",
              "medianRequestTime":0.0,
              "handlerStart":1407367247142,
              "generation":1,
              "totalTime":0.0}}},
        "maxShardsPerNode":"1",
        "router":{"name":"compositeId"},
        "replicationFactor":"1",
        "autoCreated":"true"}},
    "live_nodes":["127.0.1.1:7574_solr",
      "127.0.1.1:8983_solr"]}}
{code}

The handler names are hard-coded right now but I'm hoping that the work being 
done in SOLR-6191 will help introspect the capabilities of a node and let us 
read the names of the interesting handlers.

> Expose per-collection and per-shard aggregate statistics
> --------------------------------------------------------
>
>                 Key: SOLR-6325
>                 URL: https://issues.apache.org/jira/browse/SOLR-6325
>             Project: Solr
>          Issue Type: Sub-task
>          Components: SolrCloud
>            Reporter: Shalin Shekhar Mangar
>            Assignee: Shalin Shekhar Mangar
>             Fix For: 4.9, 5.0
>
>         Attachments: SOLR-6325.patch
>
>
> SolrCloud doesn't provide any aggregate stats about the cluster or a 
> collection. Very common questions such as document counts per shard, index 
> sizes, request rates etc cannot be answered easily without figuring out the 
> cluster state, invoking multiple core admin APIs and aggregating them 
> manually.
> I propose that we expose an API which returns each of the following on a 
> per-collection and per-shard basis:
> # Document counts
> # Index size on disk
> # Query request rate
> # Indexing request rate
> # Real time get request rate
> I am not yet sure if this should be a distributed search component or a 
> collection API.



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