File metadataFile = new File(destinationDirPath, ".metadata");
if(!metadataFile.exists()) {
ReadOnlyStorageMetadata metadata = new ReadOnlyStorageMetadata();
metadata.add(ReadOnlyStorageMetadata.FORMAT,
ReadOnlyStorageFormat.READONLY_V2.getCode());
FileUtils.writeStringToFile(metadataFile, metadata.toJsonString());
}
VAdminProto.FetchPartitionFilesRequest fetchPartitionFileRequest = VAdminProto.FetchPartitionFilesRequest.newBuilder()
.setStoreName(storeName)
.addAllPartitionIds(partitionIds)