jihoonson commented on a change in pull request #9057: [new feature] Add HBase2 Indexer URL: https://github.com/apache/druid/pull/9057#discussion_r381099165
########## File path: docs/development/extensions-contrib/druid-hbase2-indexing.md ########## @@ -0,0 +1,275 @@ +--- +layout: doc_page +title: "Druid HBase2 Indexing" +--- + +<!-- + ~ Licensed to the Apache Software Foundation (ASF) under one + ~ or more contributor license agreements. See the NOTICE file + ~ distributed with this work for additional information + ~ regarding copyright ownership. The ASF licenses this file + ~ to you 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. + --> + +# Druid HBase2 Indexing + +To use this Apache Druid (incubating) extension, make sure to [include](../../development/extensions.md#loading-extensions) +`druid-hbase2-indexing` extension. + +## Introduction + +This extension is a plug-in that indexes data in HBase. +Based on ParallelIndexTask and HadoopIndexTask, only Batch Indexing is supported due to the nature of HBase. +It supports indexing of data in tables as well as snapshots. +Since the HBase2 Indexer is based on ParallelIndexTask, it can be executed in the form of Peon in the middle manager node + or in the M/R form because it is based on HadoopIndexTask. +You can also adjust the parallelism to suit your preferences. However, in case of MapReduce, it depends on +the property of HBase's TableInputFormat. + +**The Druid HBase2 Indexer has been tested with HBase 2.2.2.** + +## Configuration +HBase2 uses the same version of the protobuf library as Druid, +so no druid.extensions.useExtensionClassloaderFirst setting is required. +But if you want to use it with HBase1, you need to configure it for HBase1. Review comment: This statement doesn't seem to relate to this extension. Can be omitted. ---------------------------------------------------------------- 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 --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
