8ad50bf745
When loading json data like `[]` (an empty array). BE will crash with stack:
```
*** Aborted at 1612273824 (unix time) try "date -d @1612273824" if you are using GNU date ***
PC: @ 0xe0cce7 rapidjson::GenericValue<>::Accept<>()
*** SIGSEGV (@0xe) received by PID 36798 (TID 0x7f7812114700) from PID 14; stack trace: ***
@ 0x7f791b74b470 (unknown)
@ 0xe0cce7 rapidjson::GenericValue<>::Accept<>()
@ 0x169ff79 _ZN5doris10JsonReader17_print_json_valueB5cxx11ERKN9rapidjson12GenericValueINS1_4UTF8IcEENS1_19MemoryPoolAllocatorINS1_12CrtAllocatorEEEEE
@ 0x16a0689 doris::JsonReader::_write_values_by_jsonpath()
@ 0x16a2cb4 doris::JsonReader::_handle_flat_array_complex_json()
@ 0x16a3761 doris::JsonScanner::get_next()
@ 0x1659bd4 doris::BrokerScanNode::scanner_scan()
@ 0x165a671 doris::BrokerScanNode::scanner_worker()
@ 0x281f67f execute_native_thread_routine
@ 0x7f791b5001c3 start_thread
@ 0x7f791b7fd12d __clone
```
Apache Doris (incubating)
Doris is an MPP-based interactive SQL data warehousing for reporting and analysis. Its original name was Palo, developed in Baidu. After donated to Apache Software Foundation, it was renamed Doris.
1. License
2. Technology
Doris mainly integrates the technology of Google Mesa and Apache Impala, and it is based on a column-oriented storage engine and can communicate by MySQL client.
3. User cases
Doris not only provides high concurrent low latency point query performance, but also provides high throughput queries of ad-hoc analysis.
Doris not only provides batch data loading, but also provides near real-time mini-batch data loading.
Doris also provides high availability, reliability, fault tolerance, and scalability.
The simplicity (of developing, deploying and using) and meeting many data serving requirements in single system are the main features of Doris (refer to Overview).
4. Compile and install
Currently only supports Docker environment and Linux OS, such as Ubuntu and CentOS.
4.1 Compile in Docker environment (Recommended)
We offer a docker image as a Doris compilation environment. You can compile Doris from source in it and run the output binaries in other Linux environments.
Firstly, you need to install and start docker service.
And then you could build Doris as following steps:
Step1: Pull the docker image with Doris building environment
$ docker pull apachedoris/doris-dev:build-env-1.2
You can check it by listing images, for example:
$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
apachedoris/doris-dev build-env-1.2 69cf7fff9d10 2 weeks ago 4.12GB
NOTE: You may have to use different images to compile from source.
image version commit id release version apachedoris/doris-dev:build-env before ff0dd0d 0.8.x, 0.9.x apachedoris/doris-dev:build-env-1.1 ff0dd0d or later 0.10.x or 0.11.x apachedoris/doris-dev:build-env-1.2 1648226 or later 0.12.x or later
Step2: Run the Docker image
You can run the image directly:
$ docker run -it apachedoris/doris-dev:build-env-1.2
Or if you want to compile the source located in your local host, you can map the local directory to the image by running:
$ docker run -it -v /your/local/path/incubator-doris-DORIS-x.x.x-release/:/root/incubator-doris-DORIS-x.x.x-release/ apachedoris/doris-dev:build-env-1.2
Step3: Download Doris source
Now you should be attached in docker environment.
You can download Doris source by release package or by git clone in image.
(If you already downloaded the source in your local host and map it to the image in Step2, you can skip this step.)
$ wget https://dist.apache.org/repos/dist/dev/incubator/doris/xxx.tar.gz
or
$ git clone https://github.com/apache/incubator-doris.git
Step4: Build Doris
Enter Doris source path and build Doris.
$ sh build.sh
After successfully building, it will install binary files in the directory output/.
4.2 For Linux OS
Prerequisites
You should install the following softwares:
GCC 7.3.0+, Oracle JDK 1.8+, Python 2.7+, Apache Maven 3.5+, CMake 3.4.3+
Then set them to environment variable PATH and set JAVA_HOME.
If your GCC version is lower than 7.3.0, you can run:
sudo yum install devtoolset-7-toolchain -y
and then, set the path of GCC (e.g /opt/rh/devtoolset-7/root/usr/bin) to the environment variable PATH.
Compile and install
Run the following script, it will compile thirdparty libraries and build whole Doris.
sh build.sh
After successfully building, it will install binary files in the directory output/.
5. License Notice
Some of the third-party dependencies' license are not compatible with Apache 2.0 License. So you may have to disable
some features of Doris to be complied with Apache 2.0 License. Details can be found in thirdparty/LICENSE.txt
6. Reporting Issues
If you find any bugs, please file a GitHub issue.
7. Links
- Doris official site - http://doris.incubator.apache.org
- User Manual (GitHub Wiki) - https://github.com/apache/incubator-doris/wiki
- Developer Mailing list - dev@doris.apache.org. Mail to dev-subscribe@doris.apache.org, follow the reply to subscribe the mail list.
- Gitter channel - https://gitter.im/apache-doris/Lobby - Online chat room with Doris developers.
- Overview - https://github.com/apache/incubator-doris/wiki/Doris-Overview
- Compile and install - https://github.com/apache/incubator-doris/wiki/Doris-Install
- Getting start - https://github.com/apache/incubator-doris/wiki/Getting-start
- Deploy and Upgrade - https://github.com/apache/incubator-doris/wiki/Doris-Deploy-%26-Upgrade
- User Manual - https://github.com/apache/incubator-doris/wiki/Doris-Create%2C-Load-and-Delete
- FAQs - https://github.com/apache/incubator-doris/wiki/Doris-FAQ