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@danhermann danhermann commented Nov 10, 2020

The cat shards API performs a ClusterStateAction and then an IndicesStatsAction. Today it accepts the ?local parameter and passes this to the ClusterStateAction but this parameter has no effect on the IndicesStatsAction. This can be surprising because GET _cat/shards?local looks like it might be a completely local call but in fact it still depends on every node in the cluster.

The local parameter was deprecated in 7.x (#62197) and this commit removes it for 8.x.

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Pinging @elastic/es-core-features (:Core/Features/CAT APIs)

@elasticmachine elasticmachine added the Team:Data Management Meta label for data/management team label Nov 10, 2020
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I left a comment related to this

Comment on lines 92 to 93
if (request.hasParam("local") && Version.CURRENT.major == Version.V_7_0_0.major + 1) {
throw new IllegalArgumentException("parameter [local] is not supported");
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You don't need to add this I believe, we automatically throw exceptions on unrecognized parameters:

{
  "error" : {
    "root_cause" : [
      {
        "type" : "illegal_argument_exception",
        "reason" : "request [/_cat/shards] contains unrecognized parameter: [aoeu]"
      }
    ],
    "type" : "illegal_argument_exception",
    "reason" : "request [/_cat/shards] contains unrecognized parameter: [aoeu]"
  },
  "status" : 400
}

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@elasticmachine update branch

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LGTM

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Thanks, @dakrone!

@danhermann danhermann merged commit f63a3b5 into elastic:master Nov 13, 2020
@danhermann danhermann deleted the remove_local_for_cat_shards branch November 13, 2020 13:34
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4 participants