[Backport MB-48244 to 7.0.2] Loading travel-sample failed on mixed mode cluster of 7.0.x

Loading sample bucket travel-sample failed. Samples loader exited with status 1. Loader's output was: 2021-08-30T22:55:49.996-07:00 (REST) (Attempt 1) (GET) Dispatching request to 'http://172.23.136.106:8091/pools/default/nodeServices' 2021-08-30T22:55:49.998-07:00 (REST) (Attempt 1) (GET) (200) Received response from 'http://172.23.136.106:8091/pools/default/nodeServices' 2021-08-30T22:55:49.998-07:00 (REST) (Attempt 1) (GET) Dispatching request to 'http://172.23.136.106:8091/pools' 2021-08-30T22:55:49.999-07:00 (REST) (Attempt 1) (GET) (200) Received response from 'http://172.23.136.106:8091/pools' 2021-08-30T22:55:49.999-07:00 (REST) (Attempt 1) (GET) Dispatching request to 'http://172.23.136.106:8091/pools/default' 2021-08-30T22:55:50.003-07:00 (REST) (Attempt 1) (GET) (200) Received response from 'http://172.23.136.106:8091/pools/default' 2021-08-30T22:55:50.003-07:00 (REST) Successfully connected to cluster | {"enterprise":true,"uuid":"a7a18eac5f29fdabd5d0360c600d1619","version":{"min_version":"7.0.0","is_mixed_cluster":true}} 2021-08-30T22:55:50.100-07:00 (REST) (Attempt 1) (GET) Dispatching request to 'http://172.23.136.106:8091/pools/default/buckets/travel-sample' 2021-08-30T22:55:50.102-07:00 (REST) (Attempt 1) (GET) (404) Received response from 'http://172.23.136.106:8091/pools/default/buckets/travel-sample' 2021-08-30T22:55:50.102-07:00 WARN: (REST) (Attempt 1) (GET) Request to endpoint '/pools/default/buckets/travel-sample' failed with status code 404 -- rest.(*Request).Execute() at request.go:158 2021-08-30T22:55:50.102-07:00 (Plan) (Bucket) Creating remote bucket 'travel-sample' if it does not exist 2021-08-30T22:55:50.102-07:00 (REST) (Attempt 1) (GET) Dispatching request to 'http://172.23.136.106:8091/pools/default/buckets/travel-sample' 2021-08-30T22:55:50.103-07:00 (REST) (Attempt 1) (GET) (404) Received response from 'http://172.23.136.106:8091/pools/default/buckets/travel-sample' 2021-08-30T22:55:50.103-07:00 WARN: (REST) (Attempt 1) (GET) Request to endpoint '/pools/default/buckets/travel-sample' failed with status code 404 -- rest.(*Request).Execute() at request.go:158 2021-08-30T22:55:50.103-07:00 Bucket travel-sample does not exist, creating one with the specified settings 2021-08-30T22:55:50.103-07:00 (REST) (Attempt 1) (POST) Dispatching request to 'http://172.23.136.106:8091/pools/default/buckets' 2021-08-30T22:55:50.131-07:00 (REST) (Attempt 1) (POST) (202) Received response from 'http://172.23.136.106:8091/pools/default/buckets' 2021-08-30T22:55:51.132-07:00 (REST) (Attempt 1) (GET) Dispatching request to 'http://172.23.136.106:8091/pools/default/buckets/travel-sample' 2021-08-30T22:55:51.150-07:00 (REST) (Attempt 1) (GET) (200) Received response from 'http://172.23.136.106:8091/pools/default/buckets/travel-sample' 2021-08-30T22:55:52.132-07:00 (REST) (Attempt 1) (GET) Dispatching request to 'http://172.23.136.106:8091/pools/default/buckets/travel-sample' 2021-08-30T22:55:52.137-07:00 (REST) (Attempt 1) (GET) (200) Received response from 'http://172.23.136.106:8091/pools/default/buckets/travel-sample' 2021-08-30T22:55:52.137-07:00 (Plan) (Bucket) Successfully ensured bucket 'travel-sample' exists | {"number":1,"duration":"2.035256874s"} 2021-08-30T22:55:52.137-07:00 (Plan) (Bucket) Automatically creating/editing scopes/collections for bucket 'travel-sample' 2021-08-30T22:55:52.137-07:00 (REST) (Attempt 1) (GET) Dispatching request to 'http://172.23.136.106:8091/pools/default/buckets/travel-sample' 2021-08-30T22:55:52.141-07:00 (REST) (Attempt 1) (GET) (200) Received response from 'http://172.23.136.106:8091/pools/default/buckets/travel-sample' 2021-08-30T22:55:52.141-07:00 (REST) (Attempt 1) (GET) Dispatching request to 'http://172.23.136.106:8091/pools/default/buckets/travel-sample/scopes' 2021-08-30T22:55:52.143-07:00 (REST) (Attempt 1) (GET) (200) Received response from 'http://172.23.136.106:8091/pools/default/buckets/travel-sample/scopes' 2021-08-30T22:55:52.143-07:00 (REST) (Attempt 1) (POST) Dispatching request to 'http://172.23.136.106:8091/pools/default/buckets/travel-sample/scopes/%40ensureManifest/0' 2021-08-30T22:55:52.147-07:00 (REST) (Attempt 1) (POST) (200) Received response from 'http://172.23.136.106:8091/pools/default/buckets/travel-sample/scopes/%40ensureManifest/0' 2021-08-30T22:55:52.147-07:00 (REST) (Attempt 1) (PUT) Dispatching request to 'http://172.23.136.106:8091/pools/default/buckets/travel-sample/scopes?validOnUid=0' 2021-08-30T22:55:52.176-07:00 (REST) (Attempt 1) (PUT) (200) Received response from 'http://172.23.136.106:8091/pools/default/buckets/travel-sample/scopes?validOnUid=0' 2021-08-30T22:55:52.176-07:00 (REST) (Attempt 1) (POST) Dispatching request to 'http://172.23.136.106:8091/pools/default/buckets/travel-sample/scopes/%40ensureManifest/1' 2021-08-30T22:55:52.682-07:00 (REST) (Attempt 1) (POST) (200) Received response from 'http://172.23.136.106:8091/pools/default/buckets/travel-sample/scopes/%40ensureManifest/1' 2021-08-30T22:55:52.682-07:00 (Plan) (Bucket) Successfully created/edited scopes/collections for bucket 'travel-sample' | {"number":2,"duration":"544.899903ms"} 2021-08-30T22:55:52.682-07:00 (Plan) (Bucket) Transferring bucket configuration for bucket 'travel-sample' 2021-08-30T22:55:52.682-07:00 (REST) (Attempt 1) (GET) Dispatching request to 'http://172.23.136.106:8091/pools/default/buckets/travel-sample' 2021-08-30T22:55:52.686-07:00 (REST) (Attempt 1) (GET) (200) Received response from 'http://172.23.136.106:8091/pools/default/buckets/travel-sample' 2021-08-30T22:55:52.687-07:00 Editing bucket to conform with settings provided 2021-08-30T22:55:52.687-07:00 (REST) (Attempt 1) (POST) Dispatching request to 'http://172.23.136.106:8091/pools/default/buckets/travel-sample' 2021-08-30T22:55:52.719-07:00 (REST) (Attempt 1) (POST) (200) Received response from 'http://172.23.136.106:8091/pools/default/buckets/travel-sample' 2021-08-30T22:55:53.720-07:00 (REST) (Attempt 1) (GET) Dispatching request to 'http://172.23.136.106:8091/pools/default/buckets/travel-sample' 2021-08-30T22:55:53.725-07:00 (REST) (Attempt 1) (GET) (200) Received response from 'http://172.23.136.106:8091/pools/default/buckets/travel-sample' 2021-08-30T22:55:53.725-07:00 (Plan) (Bucket) Successfully transferred bucket configuration for bucket 'travel-sample' | {"number":3,"duration":"1.043407578s"} 2021-08-30T22:55:53.726-07:00 (Plan) (Index) Transferring views definitions for bucket 'travel-sample' 2021-08-30T22:55:53.820-07:00 (Plan) (Index) Successfully transferred views definitions for bucket 'travel-sample' | {"number":4,"duration":"94.729289ms"} 2021-08-30T22:55:53.820-07:00 (Plan) (Query) Executing queries for bucket 'travel-sample' 2021-08-30T22:57:39.099-07:00 JSON import failed: failed to execute cluster operations: failed to execute bucket operation for bucket 'travel-sample': failed to execute queries for bucket 'travel-sample': failed to execute queries against sink bucket: failed to execute query, exhausted retry count after 3 retries JSON import failed: failed to execute query, exhausted retry count after 3 retries