提交spark on yarn作业报错：
主要错误信息“There are 1 datanode(s) running and 1 node(s) are excluded in this operation”，有一个datanode被排除
1088 [main] INFO org.apache.spark.deploy.yarn.Client - Verifying our application has not requested more than the maximum memory capability of the cluster (8192 MB per container) 1089 [main] INFO org.apache.spark.deploy.yarn.Client - Will allocate AM container, with 1408 MB memory including 384 MB overhead 1089 [main] INFO org.apache.spark.deploy.yarn.Client - Setting up container launch context for our AM 1091 [main] INFO org.apache.spark.deploy.yarn.Client - Setting up the launch environment for our AM container 1106 [main] INFO org.apache.spark.deploy.yarn.Client - Preparing resources for our AM container 1155 [main] WARN org.apache.spark.deploy.yarn.Client - Neither spark.yarn.jars nor spark.yarn.archive is set, falling back to uploading libraries under SPARK_HOME. 3343 [main] INFO org.apache.spark.deploy.yarn.Client - Uploading resource file:/tmp/spark-510bf868-cc29-4e2f-b1c0-55136c98eb32/__spark_libs__2655251803993337384.zip -> hdfs://dss0:8020/user/root/.sparkStaging/application_1645757337254_0003/__spark_libs__2655251803993 337384.zip3475 [Thread-7] INFO org.apache.hadoop.hdfs.DataStreamer - Exception in createBlockOutputStream blk_1073742400_1577 java.io.EOFException: Unexpected EOF while trying to read response from server at org.apache.hadoop.hdfs.protocolPB.PBHelperClient.vintPrefixed(PBHelperClient.java:458) at org.apache.hadoop.hdfs.DataStreamer.createBlockOutputStream(DataStreamer.java:1762) at org.apache.hadoop.hdfs.DataStreamer.nextBlockOutputStream(DataStreamer.java:1679) at org.apache.hadoop.hdfs.DataStreamer.run(DataStreamer.java:716) 3477 [Thread-7] WARN org.apache.hadoop.hdfs.DataStreamer - Abandoning BP-242088412-192.168.78.12-1644827784895:blk_1073742400_1577 3483 [Thread-7] WARN org.apache.hadoop.hdfs.DataStreamer - Excluding datanode DatanodeInfoWithStorage[192.168.78.12:9866,DS-686c7ba7-eda5-442a-a041-cf44347b8bfc,DISK] 3503 [Thread-7] WARN org.apache.hadoop.hdfs.DataStreamer - DataStreamer Exception org.apache.hadoop.ipc.RemoteException(java.io.IOException): File /user/root/.sparkStaging/application_1645757337254_0003/__spark_libs__2655251803993337384.zip could only be written to 0 of the 1 minReplication nodes. There are 1 datanode(s) running and 1 node(s) are ex cluded in this operation. at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.chooseTarget4NewBlock(BlockManager.java:2116)
执行"hadoop fs -rm -r -skipTrash /user/root/.sparkStaging/*"，清空掉该目录下的作业缓存文件后解决~，如果问题还存在可以尝试重启hdfs以及yarn，或者关闭一些服务使集群资源更加充足，然后再尝试提交作业
