FAQ-离线同步任务写入starrocks报错：No route to host

问题描述/异常栈

数据传输写入starrocks，stream load方式，报错：
25/04/27 13:28:48 ERROR Executor: Exception in task 0.0 in stage 0.0 (TID 0)
java.net.NoRouteToHostException: No route to host (Host unreachable)
    at java.net.PlainSocketImpl.socketConnect(Native Method)
    at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
    at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
    at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
    at java.net.Socket.connect(Socket.java:589)
    at org.apache.http.conn.socket.PlainConnectionSocketFactory.connectSocket(PlainConnectionSocketFactory.java:75)
    at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:142)
    at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:374)
    at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:393)
    at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:236)
    at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:186)
    at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89)
    at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110)
    at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185)
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:108)
    at com.netease.da.music.transfer.doris.DorisStreamLoadClient.sendData(DorisStreamLoadClient.java:208)
    at com.netease.da.music.transfer.doris.util.DorisUtils$.savePartition(DorisUtils.scala:70)
    at com.netease.da.music.transfer.doris.writer.DorisStreamLoadWriter.$anonfun$writeByStreamLoad$1(DorisStreamLoadWriter.scala:100)
    at com.netease.da.music.transfer.doris.writer.DorisStreamLoadWriter.$anonfun$writeByStreamLoad$1$adapted(DorisStreamLoadWriter.scala:97)
    at org.apache.spark.rdd.RDD.$anonfun$foreachPartition$2(RDD.scala:1014)
    at org.apache.spark.rdd.RDD.$anonfun$foreachPartition$2$adapted(RDD.scala:1014)
    at org.apache.spark.SparkContext.$anonfun$runJob$5(SparkContext.scala:2322)
    at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:90)
    at org.apache.spark.scheduler.Task.run(Task.scala:136)
    at org.apache.spark.executor.Executor$TaskRunner.$anonfun$run$3(Executor.scala:548)
    at org.apache.spark.util.Utils$.tryWithSafeFinally(Utils.scala:1508)
    at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:551)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)

解决方案

问题原因

作者：刘家有