JingsongLi commented on code in PR #4336: URL: https://github.com/apache/paimon/pull/4336#discussion_r1820296806
########## docs/content/maintenance/read-performance.md: ########## @@ -0,0 +1,68 @@ +--- +title: "Read Performance" +weight: 2 +type: docs +aliases: +- /maintenance/read-performance.html +--- +<!-- +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. +--> + +# Read Performance + +There are many ways to improve read performance when reading Paimon data with Flink. + +## Acceleration In Flink client +When use Flink batch job scan Paimon table, if you don't add option `scan.parallelism`, Paimon will infer the parallelism by read manifest files which take lots of time. So you can read Paimon table with the `scan.parallelism` table property. + +## Read Compact Snapshot +You can read snapshot which commitKind = Compact, Compared to read other commitKind snapshot, reading this snapshot requires fewer merge operations, resulting in higher performance. Review Comment: It may only be faster if there is a configuration full-compact. -- 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. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
