New policy has an ISM template with index pattern matching existing policy templates

[rishabhToshniwal]

Describe the bug

I am trying to create an ISM policy for index pattern [*logs-bs.cbes-*] with priority 100 and failing with below error. However I didn't see any policy matching the index pattern already present. When I create the policy with the priority number not present in existing policies it works. I am not sure how these indexes are overlapping ?

{
"error" : {
"root_cause" : [
{
"type" : "index_management_exception",
"reason" : "New policy ism_policy_opensearch_prim630-uat_cbes has an ISM template with index pattern [*logs-bs.cbes-*] matching existing policy templates, please use a different priority than 100"
}
],
"type" : "index_management_exception",
"reason" : "New policy ism_policy_opensearch_prim630-uat_cbes has an ISM template with index pattern [*logs-bs.cbes-*] matching existing policy templates, please use a different priority than 100",
"caused_by" : {
"type" : "exception",
"reason" : "java.lang.IllegalArgumentException: New policy ism_policy_opensearch_prim630-uat_cbes has an ISM template with index pattern [*logs-bs.cbes-*] matching existing policy templates, please use a different priority than 100"
}
},
"status" : 400
}

The other policies have following index pattern and priority

"priority" : 100,
"index_patterns" : [
"*abc-es-logging-index-*",
"otel-v1-apm-span-*"
],

"index_patterns" : [
"*logs-bs.couchbase-*"
],
"priority" : 102,

"index_patterns" : [
"*logs-bs.elastic-*"
],
"priority" : 101,

Related component

Indexing

To Reproduce

1. Create an ISM policy for the pattern "*logs-bs.couchbase-*" and priority 100
2. Create another ISM policy for the pattern *logs-bs.cbes-* and priority 100

Expected behavior

It should create the ISM policy as the index patterns don't overlap

Additional Details

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Host/Environment (please complete the following information):

• OS: [e.g. iOS]
• Version [e.g. 22]

Additional context
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[terryquigleysas]

@rishabhToshniwal Which version of OpenSearch are you seeing this on?

[rishabhToshniwal]

@terryquigleysas its Opensearch 2.3

[dblock]

[Catch All Triage - 1, 2, 3, 4]

[dhwanilpatel]

@opensearch-project/admin Since it is ISM related, can we move it to https://github.com/opensearch-project/index-management ?

[BEL]

Observing the same issue on 2.9