commit | 3fcced3fc2c7b9b344958fe6a1a59ba65aa88d69 | [log] [tgz] |
---|---|---|
author | Ke Wu <kwu@linkedin.com> | Thu Sep 10 17:24:14 2020 -0700 |
committer | nickpan <nickpan47@gmail.com> | Thu Sep 10 17:24:14 2020 -0700 |
tree | 2da73ade7a11bf2c589646e769ffeb1538c70359 | |
parent | 2079a10d7f1e4861a55adf034cb4eb44784e82a8 [diff] |
SAMZA-2558: Refactor app.runner.class Issues: app.runner.class config is hard coded across multple places in Samza. Changes: 1. Move ApplicationRunners.java from samza-api to samza-core module while the package name stays. 2. Add app.runner.class and getAppRunnerClass method to ApplicationConfig. 3. Update occurrence of app.runner.class to ApplicationConfig.APP_RUNNER_CLASS. API Changes: Usage of ApplicationRunners need to depend on samza-core module instead of samza-api. Upgrade Instructions: Depend on samza-core instead of samza-api module. Usage Instructions: N/A Author: Ke Wu <kwu@linkedin.com> Reviewers: Yi Pan <nickpan47@gmail.com> Closes #1400 from kw2542/SAMZA-2558
Apache Samza is a distributed stream processing framework. It uses Apache Kafka for messaging, and Apache Hadoop YARN to provide fault tolerance, processor isolation, security, and resource management.
Samza's key features include:
Check out Hello Samza to try Samza. Read the Background page to learn more about Samza.
To build Samza from a git checkout, run:
./gradlew clean build
To build Samza from a source release, it is first necessary to download the gradle wrapper script above. This bootstrapping process requires Gradle to be installed on the source machine. Gradle is available through most package managers or directly from its website. To bootstrap the wrapper, run:
gradle -b bootstrap.gradle
After the bootstrap script has completed, the regular gradlew instructions below are available.
Samza builds with Scala 2.11 or 2.12 and YARN 2.6.1, by default. Use the -PscalaSuffix switches to change Scala versions. Samza supports building Scala with 2.11 and 2.12.
./gradlew -PscalaSuffix=2.11 clean build
To run all tests:
./gradlew clean test
To run a single test:
./gradlew clean :samza-test:test -Dtest.single=TestStatefulTask
To run key-value performance tests:
./gradlew samza-shell:kvPerformanceTest -PconfigPath=file://$PWD/samza-test/src/main/config/perf/kv-perf.properties
To run yarn integration tests:
./bin/integration-tests.sh <dir> yarn-integration-tests
To run standalone integration tests:
./bin/integration-tests.sh <dir> standalone-integration-tests
./gradlew checkstyleMain checkstyleTest
To run a job (defined in a properties file):
./gradlew samza-shell:runJob -PconfigPath=/path/to/job/config.properties
To inspect a job's latest checkpoint:
./gradlew samza-shell:checkpointTool -PconfigPath=/path/to/job/config.properties
To modify a job's checkpoint (assumes that the job is not currently running), give it a file with the new offset for each partition, in the format systems.<system>.streams.<topic>.partitions.<partition>=<offset>
:
./gradlew samza-shell:checkpointTool -PconfigPath=/path/to/job/config.properties \ -PnewOffsets=file:///path/to/new/offsets.properties
To get Eclipse projects, run:
./gradlew eclipse
For IntelliJ, run:
./gradlew idea
To start contributing on Samza please read Rules and Contributor Corner. Notice that Samza git repository does not support git pull request.
Apache Samza is a top level project of the Apache Software Foundation.