bvaradar commented on a change in pull request #600: Timeline Service with Incremental View Syncing support URL: https://github.com/apache/incubator-hudi/pull/600#discussion_r276442724
########## File path: hoodie-common/src/main/java/com/uber/hoodie/common/table/view/FileSystemViewStorageType.java ########## @@ -0,0 +1,34 @@ +/* + * Copyright (c) 2018 Uber Technologies, Inc. ([email protected]) + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package com.uber.hoodie.common.table.view; + +/** + * Storage Type used to store/retrieve File system view of a table + */ +public enum FileSystemViewStorageType { + // In-memory storage of file-system view + MEMORY, + // Constrained Memory storage for file-system view with overflow data spilled to disk + SPILLABLE_DISK, + // EMBEDDED Key Value Storage for file-system view + EMBEDDED_KV_STORE, + // Delegate file-system view to remote server + REMOTE_ONLY, Review comment: Here are 2 modes here : REMOTE_FIRST and REMOTE_ONLY REMOTE_FIRST : The file-system view implementation on client side will act as a remote proxy. In case, if there is problem (or exceptions) querying remote file-system view, a backup local file-system view(using either one of in-memory, spillable, rocksDB) is used to server file-system view queries REMOTE_ONLY : In this case, there is no backup local file-system view. If there is problem (or exceptions) querying remote file-system view, then the exceptions are percolated back to client. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services
