org.elasticsearch.indices.recovery.RecoveryTarget#restoreFileFromSnapshot does not check for cancellation during the download of a file. This means that if a recovery is cancelled mid-way, we will still not release the store/shard-lock until the file is fully downloaded.
For large files or slow downloads this can lead to problems when the shard is (re-)allocated to a node that is still executing such an interrupted recovery.

-> we need to add some checks for cancellation here like we have for other recovery modes.
x-pack/plugin/snapshot-based-recoveries/src/internalClusterTest/java/org/elasticsearch/xpack/snapshotbasedrecoveries/recovery/SnapshotBasedIndexRecoveryIT.java
indexRecoveredFromSnapshot1
                );
                awaitForRecoverSnapshotFileRequestReceived.run();
                
                
                String indexRecoveredFromPeer = indices.get(1);
                updateIndexSettings(Settings.builder().put("index.routing.allocation.require._name", targetNode), indexRecoveredFromPeer);
                ensureGreen(indexRecoveredFromPeer);
                assertPeerRecoveryDidNotUseSnapshots(indexRecoveredFromPeer, sourceNode, targetNode);
                
                respondToRecoverSnapshotFile.run();
                ensureGreen(indexRecoveredFromSnapshot1);
                assertPeerRecoveryUsedSnapshots(indexRecoveredFromSnapshot1, sourceNode, targetNode);
                for (RecoverySnapshotFileRequest recoverySnapshotFileRequest : recoverySnapshotFileRequests) {
                    String indexName = recoverySnapshotFileRequest.shardId().getIndexName();
                    assertThat(indexName, is(equalTo(indexRecoveredFromSnapshot1)));
                }
                targetMockTransportService.clearAllRules();
                String indexRecoveredFromSnapshot2 = indices.get(2);
                updateIndexSettings(
                    Settings.builder().put("index.routing.allocation.require._name", targetNode),
                    indexRecoveredFromSnapshot2
                );
                ensureGreen(indexRecoveredFromSnapshot2);
                assertPeerRecoveryUsedSnapshots(indexRecoveredFromSnapshot2, sourceNode, targetNode);
            }
        );
    }
    public void testRecoveryUsingSnapshotsPermitIsReturnedAfterFailureOrCancellation() throws Exception {
        executeRecoveryWithSnapshotFileDownloadThrottled(