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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 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.

Quick Start

This documentation gives a quick start guide for running Apache Spark with Apache Celeborn(Incubating).

Download Celeborn

Download the latest Celeborn binary from the Downloading Page. Decompress the binary and set $CELEBORN_HOME

tar -C <DST_DIR> -zxvf apache-celeborn-<VERSION>-bin.tgz
export $CELEBORN_HOME=<Decompressed path>

Configure Logging and Storage

Configure Logging

cd $CELEBORN_HOME/conf
cp log4j2.xml.template log4j2.xml

Configure Storage

Configure the directory to store shuffle data, for example $CELEBORN_HOME/shuffle

cd $CELEBORN_HOME/conf
echo "celeborn.worker.storage.dirs=$CELEBORN_HOME/shuffle" > celeborn-defaults.conf

Start Celeborn Service

Start Master

cd $CELEBORN_HOME
./sbin/start-master.sh

You should see Master's ip:port in the log:

INFO [main] NettyRpcEnvFactory: Starting RPC Server [MasterSys] on 192.168.2.109:9097

Start Worker

Use the Master's IP and Port to start Worker:

cd $CELEBORN_HOME
./sbin/start-worker.sh celeborn://<Master IP>:<Master Port>

You should see the following message in Worker's log:

INFO [main] MasterClient: connect to master 192.168.2.109:9097.
INFO [main] Worker: Register worker successfully.

And also the following message in Master's log:

INFO [dispatcher-event-loop-9] Master: Registered worker
Host: 192.168.2.109
RpcPort: 57806
PushPort: 57807
FetchPort: 57809
ReplicatePort: 57808
SlotsUsed: 0
LastHeartbeat: 0
HeartbeatElapsedSeconds: xxx
Disks:
  DiskInfo0: xxx
UserResourceConsumption: empty
WorkerRef: null

Start Spark with Celeborn

Copy Celeborn Client to Spark's jars

Celeborn release binary contains clients for Spark 2.x and Spark 3.x, copy the corresponding client jar into Spark's jars/ directory:

cp $CELEBORN_HOME/spark/<Celeborn Client Jar> $SPARK_HOME/jars/

Start spark-shell

Set spark.shuffle.manager to Celeborn's ShuffleManager, and turn off spark.shuffle.service.enabled:

cd $SPARK_HOME

./bin/spark-shell \
--conf spark.shuffle.manager=org.apache.spark.shuffle.celeborn.SparkShuffleManager \
--conf spark.shuffle.service.enabled=false

Then run the following test case:

spark.sparkContext
  .parallelize(1 to 10, 10)
  .flatMap(_ => (1 to 100).iterator.map(num => num))
  .repartition(10)
  .count

During the Spark Job, you should see the following message in Celeborn Master's log:

Master: Offer slots successfully for 10 reducers of local-1690000152711-0 on 1 workers.

And the following message in Celeborn Worker's log:

INFO [dispatcher-event-loop-9] Controller: Reserved 10 primary location and 0 replica location for local-1690000152711-0
INFO [dispatcher-event-loop-8] Controller: Start commitFiles for local-1690000152711-0
INFO [async-reply] Controller: CommitFiles for local-1690000152711-0 success with 10 committed primary partitions, 0 empty primary partitions, 0 failed primary partitions, 0 committed replica partitions, 0 empty replica partitions, 0 failed replica partitions.