[Remote Store] Change remote_store setting validation message to make it more clear

[sachinpkale]

Signed-off-by: Sachin Kale kalsac@amazon.com

Description

• Currently, if we try to enable index.remote_store.enabled without setting replication type to SEGMENT, we get following error:

{
  "error" : {
    "root_cause" : [
      {
        "type" : "illegal_argument_exception",
        "reason" : "Settings index.remote_store.enabled cannot be enabled when index.replication.type is set to DOCUMENT"
      }
    ],
    "type" : "illegal_argument_exception",
    "reason" : "Settings index.remote_store.enabled cannot be enabled when index.replication.type is set to DOCUMENT"
  },
  "status" : 400
}

• But this does not make the dependency of segment replication clear. With this change, we are changing the error message to:

{
  "error" : {
    "root_cause" : [
      {
        "type" : "illegal_argument_exception",
        "reason" : "To enable index.remote_store.enabled, index.replication.type should be set to SEGMENT"
      }
    ],
    "type" : "illegal_argument_exception",
    "reason" : "To enable index.remote_store.enabled, index.replication.type should be set to SEGMENT"
  },
  "status" : 400
}

Issues Resolved

• [Remote Store] Fix message on enabling remote store without segment replication #4201

Check List

• New functionality includes testing.
  • All tests pass
• New functionality has been documented.
  • New functionality has javadoc added
• Commits are signed per the DCO using --signoff

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
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[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/1690/
• CommitID: d6dea08

[BhumikaSaini-Amazon]

Thanks for adding this!
Please could you help update the unit tests as well for this change?

[sachinpkale]

Please could you help update the unit tests as well for this change?

Forgot to update UTs. Thanks @BhumikaSaini-Amazon

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/1693/
• CommitID: 13999e0

[BhumikaSaini-Amazon]

Looks good to me 👍
Please link the respective Issue to this PR and strike off the PR checklist items
Thanks!

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/1694/
• CommitID: 7cd1001

[sachinpkale]

Looks good to me 👍 Please link the respective Issue to this PR and strike off the PR checklist items Thanks!

@BhumikaSaini-Amazon Added issue link and updated PR checklist.