We saw a case where the recovery stats reported `recovered_bytes` greater than `length_in_bytes` for one file:

```
GET /_recovery?detailed

200 OK
...
{
  "name": "_buk.fdt",
  "length_in_bytes": 26891307173,
  "reused": false,
  "recovered_in_bytes": 35324928266,
  "recovered_from_snapshot_in_bytes": 8433621093
}
...
```

NB `35324928266 == 26891307173 + 8433621093`

This causes Elasticsearch to compute a negative value for the reserved space on the target node of this recovery, which prevents stats APIs from working. This appears to be caused by a network-level failure which triggers a retry without first cancelling an ongoing download of a different file with the same name from the snapshot repository.

---

### Workaround

Restart the target node to clear these stats.
x-pack/plugin/snapshot-based-recoveries/src/internalClusterTest/java/org/elasticsearch/xpack/snapshotbasedrecoveries/recovery/SnapshotBasedIndexRecoveryIT.java
assertThat(source.get("field"), is(equalTo(docIdToMatch)));
                    assertThat(source.get("field2"), is(equalTo("Some text " + docIdToMatch)));
                }
                case 2 -> {
                    searchResponse = searchRequestBuilder.setQuery(QueryBuilders.matchQuery("field2", "text")).get();
                    assertSearchResponseContainsAllIndexedDocs(searchResponse, docCount);
                }
                default -> throw new IllegalStateException("Unexpected value: " + testCase);
            }
        }
    }
    private void assertSearchResponseContainsAllIndexedDocs(SearchResponse searchResponse, long docCount) {
        assertThat(searchResponse.getSuccessfulShards(), equalTo(1));
        assertThat(searchResponse.getHits().getTotalHits().value, equalTo(docCount));
        for (int i = 0; i < searchResponse.getHits().getHits().length; i++) {
            SearchHit searchHit = searchResponse.getHits().getAt(i);
            Map<String, Object> source = searchHit.getSourceAsMap();
            assertThat(source, is(notNullValue()));
            assertThat(source.get("field"), is(equalTo(i)));
            assertThat(source.get("field2"), is(equalTo("Some text " + i)));
        }
    }
    private void assertPeerRecoveryWasSuccessful(RecoveryState recoveryState, String sourceNode, String targetNode) {
        assertThat(recoveryState.getStage(), equalTo(RecoveryState.Stage.DONE));
        assertThat(recoveryState.getRecoverySource(), equalTo(RecoverySource.PeerRecoverySource.INSTANCE));
        assertThat(recoveryState.getSourceNode(), notNullValue());
        assertThat(recoveryState.getSourceNode().getName(), equalTo(sourceNode));
        assertThat(recoveryState.getTargetNode(), notNullValue());
        assertThat(recoveryState.getTargetNode().getName(), equalTo(targetNode));
        RecoveryState.Index indexState = recoveryState.getIndex();