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doris-spark-connector

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Spark Connector for Apache Doris

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# Spark Connector for Apache Doris

[![License](https://img.shields.io/badge/license-Apache%202-4EB1BA.svg)](https://www.apache.org/licenses/LICENSE-2.0.html)
[![Join the Doris Community at Slack](https://img.shields.io/badge/chat-slack-brightgreen)](https://join.slack.com/t/apachedoriscommunity/shared_invite/zt-11jb8gesh-7IukzSrdea6mqoG0HB4gZg)

### Spark Doris Connector

More information about compilation and usage, please visit [Spark Doris Connector](https://doris.apache.org/docs/ecosystem/spark-doris-connector)

## License

[Apache License, Version 2.0](https://www.apache.org/licenses/LICENSE-2.0)

## How to Build

You need to copy customer_env.sh.tpl to customer_env.sh before build and you need to configure it before build.
```shell
git clone git@github.com:apache/doris-spark-connector.git
cd doris-spark-connector/spark-doris-connector
./build.sh
```

### QuickStart

1. download and compile Spark Doris Connector from  https://github.com/apache/doris-spark-connector, we suggest compile Spark Doris Connector  by Doris official image。

```bash
$ docker pull apache/doris:build-env-ldb-toolchain-latest
```

2. the result of compile jar is like：spark-doris-connector-3.1_2.12-1.0.0-SNAPSHOT.jar

3. download spark for https://spark.apache.org/downloads.html   .if in china there have a good choice of tencent link  https://mirrors.cloud.tencent.com/apache/spark/spark-3.1.2/

```bash
#download
wget https://mirrors.cloud.tencent.com/apache/spark/spark-3.1.2/spark-3.1.2-bin-hadoop3.2.tgz
#decompression
tar -xzvf spark-3.1.2-bin-hadoop3.2.tgz
```

4. config Spark environment

```shell
vim /etc/profile
export SPARK_HOME=/your_parh/spark-3.1.2-bin-hadoop3.2
export PATH=$PATH:$SPARK_HOME/bin
source /etc/profile
```

5. copy spark-doris-connector-3.1_2.12-1.0.0-SNAPSHOT.jar to spark  jars directory。

```shell
cp /your_path/spark-doris-connector/target/spark-doris-connector-3.1_2.12-1.0.0-SNAPSHOT.jar  $SPARK_HOME/jars
```

6. created  doris database and table。

```sql
   create database mongo_doris;
   use mongo_doris;
   CREATE TABLE data_sync_test_simple
    (
            _id VARCHAR(32) DEFAULT '',
            id VARCHAR(32) DEFAULT '',
            user_name VARCHAR(32) DEFAULT '',
            member_list VARCHAR(32) DEFAULT ''
    )
    DUPLICATE KEY(_id)
    DISTRIBUTED BY HASH(_id) BUCKETS 10
    PROPERTIES("replication_num" = "1");
   INSERT INTO data_sync_test_simple VALUES ('1','1','alex','123');
   ```

7. Input this coed in spark-shell.

```bash
import org.apache.doris.spark._
val dorisSparkRDD = sc.dorisRDD(
  tableIdentifier = Some("mongo_doris.data_sync_test"),
  cfg = Some(Map(
    "doris.fenodes" -> "127.0.0.1:8030",
    "doris.request.auth.user" -> "root",
    "doris.request.auth.password" -> ""
  ))
)
dorisSparkRDD.collect()
```

- mongo_doris:doris database name
- data_sync_test:doris  table mame.
- doris.fenodes:doris FE IP:http_port
- doris.request.auth.user:doris  user name.
- doris.request.auth.password:doris  password

8. if Spark is Cluster model,upload Jar to HDFS，add doris-spark-connector jar HDFS URL in  spark.yarn.jars.

```bash
spark.yarn.jars=hdfs:///spark-jars/doris-spark-connector-3.1.2-2.12-1.0.0.jar
```

Link：https://github.com/apache/doris/discussions/9486

9. in pyspark,input this code in pyspark shell command.

```bash
dorisSparkDF = spark.read.format("doris")
.option("doris.table.identifier", "mongo_doris.data_sync_test")
.option("doris.fenodes", "127.0.0.1:8030")
.option("user", "root")
.option("password", "")
.load()
# show 5 lines data 
dorisSparkDF.show(5)
```

## TLS

The connector supports one-way TLS for Doris HTTP APIs and Stream Load,
MySQL/JDBC metadata queries, BE Thrift reads, and Arrow Flight SQL reads. TLS is
disabled by default.

```scala
spark.read.format("doris")
  .option("doris.fenodes", "fe.example.com:8040")
  .option("doris.table.identifier", "database.table")
  .option("user", "root")
  .option("password", "")
  .option("doris.enable.tls", "true")
  .option("doris.tls.ca-certificate-path", "/etc/doris-tls/ca.pem")
  .load()
```

| Option | Default | Description |
|---|---|---|
| `doris.enable.tls` | `false` | Enables TLS for all Doris protocols not listed in `doris.tls.excluded-protocols`. |
| `doris.tls.ca-certificate-path` | empty | Path to a PEM file containing one or more trusted X.509 CA certificates. An empty value uses the JVM or client-library default trust roots. |
| `doris.tls.skip-hostname-verification` | `false` | Disables hostname verification while retaining CA verification. This mode is not supported by Arrow Flight SQL. |
| `doris.tls.excluded-protocols` | empty | Comma-separated plaintext exceptions: `http`, `mysql`, `thrift`, and `arrowflight`. |

The connector validates certificate chains and hostnames by default and does not
modify JVM-global TLS settings. Client certificates and mutual TLS are not
supported.

The CA file must be available at the same path on the Spark driver and every
executor. For YARN, distribute it with `--files /local/path/ca.pem#ca.pem` and
configure `doris.tls.ca-certificate-path=ca.pem`. For Kubernetes, mount the CA
from a Secret or volume into both driver and executor pods and configure the
mounted path.

## type convertion for writing to doris using arrow
|doris|spark|
|---|---|
| BOOLEAN | BooleanType |
| TINYINT | ByteType |
| SMALLINT | ShortType |
| INT | IntegerType |
| BIGINT | LongType |
| LARGEINT | StringType |
| FLOAT | FloatType |
| DOUBLE | DoubleType |
| DECIMAL(M,D) | DecimalType(M,D) |
| DATE | DateType |
| DATETIME | TimestampType |
| CHAR(L) | StringType |
| VARCHAR(L) | StringType |
| STRING | StringType |
| ARRAY | ARRAY |
| MAP | MAP |
| STRUCT | STRUCT |

## Report issues or submit pull request

If you find any bugs, feel free to file a [GitHub issue](https://github.com/apache/doris/issues) or fix it by submitting a [pull request](https://github.com/apache/doris/pulls).

## Contact Us

Contact us through the following mailing list.

| Name                                                                          | Scope                           |                                                                 |                                                                     |                                                                              |
|:------------------------------------------------------------------------------|:--------------------------------|:----------------------------------------------------------------|:--------------------------------------------------------------------|:-----------------------------------------------------------------------------|
| [dev@doris.apache.org](mailto:dev@doris.apache.org)     | Development-related discussions | [Subscribe](mailto:dev-subscribe@doris.apache.org)   | [Unsubscribe](mailto:dev-unsubscribe@doris.apache.org)   | [Archives](https://mail-archives.apache.org/mod_mbox/doris-dev/)   |

## Links

* Doris official site - <https://doris.apache.org>
* Developer Mailing list - <dev@doris.apache.org>. Mail to <dev-subscribe@doris.apache.org>, follow the reply to subscribe the mail list.
* Slack channel - [Join the Slack](https://join.slack.com/t/apachedoriscommunity/shared_invite/zt-11jb8gesh-7IukzSrdea6mqoG0HB4gZg)

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