Setting FE Dev Env - Eclipse
Setting FE dev env using Eclipse
Preparationβ
- JDK 1.8+
- Maven 3.x+
- Eclipse, with M2Eclipse installed
Code Generationβ
The FE module requires part of the generated code, such as Thrift, Protobuf, Jflex, CUP and other frameworks.
Windowsβ
Under Linux, enter the source code directory
fe
and execute the following command:mvn generate-sources
If use windows as development environment, then package the generated
fe/fe-core/target/generated-sources
directory:fe/fe-core/target/ && tar czf java.tar.gz generated-sources/
Copy
java.tar.gz
to thefe/fe-core/target/
directory of the development environment and unzipcp java.tar.gz /path/to/doris/fe/fe-core/target/
cd /path/to/doris/fe/fe-core/target/ && tar xzf java.tar.gz
MacOSβ
We can use maven to do code generation or in other words build FE project directly on MacOS.
Install apache thrift from source code or
brew
if you don't have oneCreate a directory
thirdparty/installed/bin
, and link command thrift into it.mkdir -p thirdparty/installed/bin
ln -s ${thrift_installed_full_path} thirdparty/installed/bin/thriftCall
maven
to build FE project, if something went wrong, check you$JAVA_HOME
, java version and newly installed commandthrift
work correctly.cd fe && mvn package -DskipTests=true -Dos.arch=x86_64
Option -Dos.arch=x86_64
in step 3 is for compatibility of Apple's M series
CPU.
Note: 0. cup and jfex use java jar to do code generation, the process is platform independent.
- Code generation of protobuf is done by
protoc-jar-maven-plugin
, which uses precompiled binaries of different archs to make it seems platform independent. - thrift is the only one relies on
thirdparty/installed
, which needs to be built from source. We will make it independent onthirdparty/installed
someday (TODO).
Import FE projectβ
Import as eclipse projectβ
In the
fe/
directory of the development environment, execute the following command to generate the Eclipse project file:cd /path/to/doris/fe/ && mvn -npr eclipse:eclipse -Dskip.plugin=true
After the execution is completed, the
.project
and.classpath
files will be generated in thefe/
directory.Import FE project
- Open Eclipse, choose
File -> Import
. - Choose
General -> Existing Projects into Workspace
. Select root directory
and choosefe/
directory, clickFinish
to finish.- Right click the project, and choose
Build Path -> Configure Build Path
. - In the
Java Build Path
dialog, choose theSource
tab, clickAdd Folder
, and select thejava/
directory that was copied and unzipped before adding. - Click
Apply and Close
to finish.
- Open Eclipse, choose
At this point, FE project import is complete. The project directory in Eclipse is roughly as follows:
Import as maven projectβ
We are able to build FE with maven, if we have done all the operations related to MacOS. And we are now of course able to import FE project as a maven project in eclipse.
In eclipse menu File
select Import -> Maven -> Existing Maven Projects
,
Choose doris fe directory to finish import. It's recommended to use working set
to manage the all modules of FE.
Enjoy developing and debugging FE in eclipse!
Run Unit Testβ
Right-click on the unit test file you want to run and select Run As -> JUnit Test
. (If you want to debug, select Debug As -> JUnit Test
).
If the following error occurs:
java.lang.Exception: Method xxxx should have no parameters
Then right-click the unit test file and select Run As -> Run Configurations...
. (If you want to debug, select Debug As -> Debug Configurations...
).
Add to the VM arguments
in the Arguments
tab:
-javaagent:${settings.localRepository}/org/jmockit/jmockit/1.48/jmockit-1.48.jar
Among them, ${settings.localRepository}
should be replaced with the path of the maven library path, such as:
-javaagent:/Users/cmy/.m2/repository/org/jmockit/jmockit/1.48/jmockit-1.48.jar
Then just run Run/Debug
.
Run FEβ
You can directly start an FE process in Eclipse to facilitate debugging the code.
Create a runtime directory
mkdir /path/to/doris/fe/run/
cd /path/to/doris/fe/run/
mkdir conf/log/doris-meta/Create configuration file
Create the configuration file
fe.conf
in theconf/
directory created in the first step. You can directly copyconf/fe.conf
in the source directory and make simple changes.Find the
src/main/java/org/apache/doris/DorisFE.java
file in Eclipse, right-click and selectRun As -> Run Configurations...
. Add the following environment variables to theEnvironment
tab:DORIS_HOME: /path/to/doris/fe/run/
PID_DIR: /path/to/doris/fe/run/
LOG_DIR: /path/to/doris/fe/run/log
Right-click
DorisFE.java
and selectRun As -> Java Application
to start FE.
To run a UT, a FE service will be started at first. And then, UT cases execute as client and test corresponding logics. When errors occur, only client logs will be print in UT logs. If you need more information from server logs, you can view logs in ${DORIS_HOME}/fe/mocked
.
Code Updateβ
Imported as eclipse projectβ
Update lexical and grammar files or proto and thrift files
If you modified
fe/src/main/cup/sql_parser.cup
orfe/src/main/jflex/sql_scanner.flex
file or proto and thrift files. You need to execute the following commands in thefe/
directory:mvn generate-sources
Then refresh the project in Eclipse.
Update maven dependencies
If you update the dependency in
fe/pom.xml
, you need to execute the following command in thefe/
directory:mvn -npr eclipse:eclipse -Dskip.plugin=true
Then refresh the project in Eclipse. If it cannot be updated, it is recommended to delete the project and import it again according to this document.
Imported as maven projectβ
Update lexical and grammar files or proto and thrift files
cd fe && mvn package -DskipTests=true -Dos.arch=x86_64
Update maven dependencies, in eclipse
Package Explorer
right click on the projectmaven -> update project...
Refresh project in eclipse
Imports Orderβ
In order to maintain the Imports order of Java, please perform the following operations to set the Imports Order of the project.
Create the file
fe_doris.importorder
and write the following:#Organize Import Order
#Wed Jul 01 16:42:47 CST 2020
4=javax
3=java
2=org
1=com
0=org.apache.dorisOpen Eclipse Preferences, select
Java -> Code Style -> Organize Imports
. ClickImport
to import the above file.