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### What changes were proposed in this pull request? To clarify a spark config to work with Celeborn. ### Why are the changes needed? After some tests, I found that Spark 3.1 and newer can work with Celeborn with `spark.shuffle.service.enabled=true`. ExternalShuffleBlockResolver won't check the shuffle manager's type since Spark 3.1 and newer. ### Does this PR introduce _any_ user-facing change? NO. ### How was this patch tested? I tested two scenarios about this PR. 1. Check whether Spark can release the executors in time. 2. Check data correctness by running TPC-DS. All checks are good. Closes #1955 from FMX/CELEBORN-1010. Authored-by: mingji <fengmingxiao.fmx@alibaba-inc.com> Signed-off-by: zky.zhoukeyong <zky.zhoukeyong@alibaba-inc.com>
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| 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 https://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. |
Gluten Support
Velox Backend
Gluten with velox backend supports Celeborn as remote shuffle service. Below introduction is used to enable this feature
First refer to this URL(https://github.com/oap-project/gluten/blob/main/docs/get-started/Velox.md) to build Gluten with velox backend.
When compiling the Gluten Java module, it's required to enable rss profile, as follows:
mvn clean package -Pbackends-velox -Pspark-3.3 -Prss -DskipTests
Then add the Gluten and Spark Celeborn Client packages to your Spark application's classpath(usually add them into $SPARK_HOME/jars).
- Celeborn: celeborn-client-spark-3-shaded_2.12-0.3.0-incubating.jar
- Gluten: gluten-velox-bundle-spark3.x_2.12-xx-xx-SNAPSHOT.jar, gluten-thirdparty-lib-xx.jar
Currently to use Gluten following configurations are required in spark-defaults.conf
spark.shuffle.manager org.apache.spark.shuffle.gluten.celeborn.CelebornShuffleManager
# celeborn master
spark.celeborn.master.endpoints clb-master:9097
# we recommend set spark.celeborn.push.replicate.enabled to true to enable server-side data replication
# If you have only one worker, this setting must be false
spark.celeborn.client.push.replicate.enabled true
spark.celeborn.client.spark.shuffle.writer hash
# This is not necessary if your Spark external shuffle service is Spark 3.1 or newer
spark.shuffle.service.enabled false
spark.sql.adaptive.localShuffleReader.enabled false
# If you want to use dynamic resource allocation,
# please refer to this URL (https://github.com/apache/incubator-celeborn/tree/main/assets/spark-patch) to apply the patch into your own Spark.
spark.dynamicAllocation.enabled false
Availability
| Celeborn Version | Available in Gluten? |
|---|---|
| < 0.2.0 | No |
| >= 0.2.0 | Yes |