xpleaf opened a new issue, #1808:
URL: https://github.com/apache/incubator-seatunnel/issues/1808

   ### Search before asking
   
   - [X] I had searched in the 
[issues](https://github.com/apache/incubator-seatunnel/issues?q=is%3Aissue+label%3A%22bug%22)
 and found no similar issues.
   
   
   ### What happened
   
   When sink is ClickHouse and multiple hosts are configured:
   ```
   sink {
        clickhouse {
       host = "192.168.56.101:8123,192.168.56.102:8123"
       ......
        }
   }
   ```
   All kinds of problems are triggered and the current system does not work 
properly. For details, see the exception information description in the 
Exception section.
   
   The root cause of this problem is that the `split_mode` code is not 
compatible with multiple hosts. The processing logic of the `split_mode` code 
assumes that the host configuration item has only one address.This will cause 
ClickHouse Sink to fail if multiple hosts are specified, regardless of whether 
`split_mode` is used.
   
   I have re-compatible the multi-host scenario in a subsequent commit without 
affecting the existing functionality, and when `split_mode` is false, data 
writes are load-balanced according to the multiple hosts specified.
   
   
   ### SeaTunnel Version
   
   2.1.1/dev
   
   ### SeaTunnel Config
   
   ```conf
   env {
     spark.app.name = "SeaTunnel"
     spark.sql.catalogImplementation = "hive"
     spark.executor.instances = 2
     spark.executor.cores = 1
     spark.executor.memory = "1g"
     spark.master = local
   }
   
   source {
     hive {
       pre_sql = "select id,key1,value1,key2,value2,key3,value3,dt from gac.tmp"
       result_table_name = "tmp"
     }
   }
   
   transform {}
   
   sink {
        clickhouse {
       host = "192.168.10.101:8123,192.168.10.102:8123"
       clickhouse.socket_timeout = 50000
       database = "gac"
       table = "hive_tmp"
       fields = ["id", "key1", "value1", "key2", "value2", "key3", "value3", 
"dt"]
       username = "gac_se"
       password = "123456"
       bulk_size = 20000
       split_mode = false // or true
        }
   }
   ```
   
   
   ### Running Command
   
   ```shell
   default
   ```
   
   
   ### Error Exception
   
   ```log
   When host is set to multiple hosts.
   When `split_mode` is true, the exception message is:
   Caused by: java.lang.IllegalArgumentException: port is missed or wrong
        at 
ru.yandex.clickhouse.ClickhouseJdbcUrlParser.parseClickhouseUrl(ClickhouseJdbcUrlParser.java:42)
        at 
ru.yandex.clickhouse.ClickhouseJdbcUrlParser.parse(ClickhouseJdbcUrlParser.java:30)
        at 
ru.yandex.clickhouse.ClickHouseConnectionImpl.<init>(ClickHouseConnectionImpl.java:69)
        at 
ru.yandex.clickhouse.ClickHouseDriver.connect(ClickHouseDriver.java:55)
        at 
ru.yandex.clickhouse.BalancedClickhouseDataSource.getConnection(BalancedClickhouseDataSource.java:194)
        at 
org.apache.seatunnel.spark.clickhouse.sink.Clickhouse$$anonfun$output$1$$anonfun$1.apply(Clickhouse.scala:84)
        at 
org.apache.seatunnel.spark.clickhouse.sink.Clickhouse$$anonfun$output$1$$anonfun$1.apply(Clickhouse.scala:82)
        at 
scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
        at 
scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
        at scala.collection.Iterator$class.foreach(Iterator.scala:893)
        at scala.collection.AbstractIterator.foreach(Iterator.scala:1336)
        at scala.collection.IterableLike$class.foreach(IterableLike.scala:72)
        at scala.collection.AbstractIterable.foreach(Iterable.scala:54)
        at scala.collection.TraversableLike$class.map(TraversableLike.scala:234)
        at scala.collection.AbstractTraversable.map(Traversable.scala:104)
        at 
org.apache.seatunnel.spark.clickhouse.sink.Clickhouse$$anonfun$output$1.apply(Clickhouse.scala:82)
        at 
org.apache.seatunnel.spark.clickhouse.sink.Clickhouse$$anonfun$output$1.apply(Clickhouse.scala:80)
        at 
org.apache.spark.rdd.RDD$$anonfun$foreachPartition$1$$anonfun$apply$28.apply(RDD.scala:935)
        at 
org.apache.spark.rdd.RDD$$anonfun$foreachPartition$1$$anonfun$apply$28.apply(RDD.scala:935)
        at 
org.apache.spark.SparkContext$$anonfun$runJob$5.apply(SparkContext.scala:2101)
        at 
org.apache.spark.SparkContext$$anonfun$runJob$5.apply(SparkContext.scala:2101)
        at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:90)
        at org.apache.spark.scheduler.Task.run(Task.scala:121)
        at 
org.apache.spark.executor.Executor$TaskRunner$$anonfun$10.apply(Executor.scala:402)
        at org.apache.spark.util.Utils$.tryWithSafeFinally(Utils.scala:1360)
        at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:408)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
   
   When `split_mode` is false, the exception information is:
   Caused by: java.lang.IllegalArgumentException: port is missed or wrong
        at 
ru.yandex.clickhouse.ClickhouseJdbcUrlParser.parseClickhouseUrl(ClickhouseJdbcUrlParser.java:42)
        at 
ru.yandex.clickhouse.ClickhouseJdbcUrlParser.parse(ClickhouseJdbcUrlParser.java:30)
        at 
ru.yandex.clickhouse.ClickHouseConnectionImpl.<init>(ClickHouseConnectionImpl.java:69)
        at 
ru.yandex.clickhouse.ClickHouseDriver.connect(ClickHouseDriver.java:55)
        at 
ru.yandex.clickhouse.BalancedClickhouseDataSource.getConnection(BalancedClickhouseDataSource.java:194)
        at 
org.apache.seatunnel.spark.clickhouse.sink.Clickhouse$$anonfun$output$1$$anonfun$1.apply(Clickhouse.scala:84)
        at 
org.apache.seatunnel.spark.clickhouse.sink.Clickhouse$$anonfun$output$1$$anonfun$1.apply(Clickhouse.scala:82)
        at 
scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
        at 
scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
        at scala.collection.Iterator$class.foreach(Iterator.scala:893)
        at scala.collection.AbstractIterator.foreach(Iterator.scala:1336)
        at scala.collection.IterableLike$class.foreach(IterableLike.scala:72)
        at scala.collection.AbstractIterable.foreach(Iterable.scala:54)
        at scala.collection.TraversableLike$class.map(TraversableLike.scala:234)
        at scala.collection.AbstractTraversable.map(Traversable.scala:104)
        at 
org.apache.seatunnel.spark.clickhouse.sink.Clickhouse$$anonfun$output$1.apply(Clickhouse.scala:82)
        at 
org.apache.seatunnel.spark.clickhouse.sink.Clickhouse$$anonfun$output$1.apply(Clickhouse.scala:80)
        at 
org.apache.spark.rdd.RDD$$anonfun$foreachPartition$1$$anonfun$apply$28.apply(RDD.scala:935)
        at 
org.apache.spark.rdd.RDD$$anonfun$foreachPartition$1$$anonfun$apply$28.apply(RDD.scala:935)
        at 
org.apache.spark.SparkContext$$anonfun$runJob$5.apply(SparkContext.scala:2101)
        at 
org.apache.spark.SparkContext$$anonfun$runJob$5.apply(SparkContext.scala:2101)
        at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:90)
        at org.apache.spark.scheduler.Task.run(Task.scala:121)
        at 
org.apache.spark.executor.Executor$TaskRunner$$anonfun$10.apply(Executor.scala:402)
        at org.apache.spark.util.Utils$.tryWithSafeFinally(Utils.scala:1360)
        at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:408)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
   ```
   
   
   ### Flink or Spark Version
   
   spark local
   
   ### Java or Scala Version
   
   openjdk8
   
   ### Screenshots
   
   _No response_
   
   ### Are you willing to submit PR?
   
   - [X] Yes I am willing to submit a PR!
   
   ### Code of Conduct
   
   - [X] I agree to follow this project's [Code of 
Conduct](https://www.apache.org/foundation/policies/conduct)
   


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