2017-03-01 79 views
0

我能夠將結構化流式處理的結果寫入實驗性文件。問題是這些文件在本地文件系統中,現在我想將它們寫入hadoop文件系統。有沒有辦法做到這一點?結構化流式傳輸將實驗性文件寫入hadoop

StreamingQuery query = result //.orderBy("window") 
      .repartition(1) 
      .writeStream() 
      .outputMode(OutputMode.Append()) 
      .format("parquet") 
      .option("checkpointLocation", "hdfs://localhost:19000/data/checkpoints") 
      .start("hdfs://localhost:19000/data/total"); 

我用這個代碼,但它說:

Exception in thread "main" java.lang.IllegalArgumentException: Wrong FS: hdfs://localhost:19000/data/checkpoints/metadata, expected: file:/// 
at org.apache.hadoop.fs.FileSystem.checkPath(FileSystem.java:649) 
at org.apache.hadoop.fs.RawLocalFileSystem.pathToFile(RawLocalFileSystem.java:82) 
at org.apache.hadoop.fs.RawLocalFileSystem.deprecatedGetFileStatus(RawLocalFileSystem.java:606) 
at org.apache.hadoop.fs.RawLocalFileSystem.getFileLinkStatusInternal(RawLocalFileSystem.java:824) 
at org.apache.hadoop.fs.RawLocalFileSystem.getFileStatus(RawLocalFileSystem.java:601) 
at org.apache.hadoop.fs.FilterFileSystem.getFileStatus(FilterFileSystem.java:421) 
at org.apache.hadoop.fs.FileSystem.exists(FileSystem.java:1426) 
at org.apache.spark.sql.execution.streaming.StreamMetadata$.read(StreamMetadata.scala:51) 
at org.apache.spark.sql.execution.streaming.StreamExecution.<init>(StreamExecution.scala:100) 
at org.apache.spark.sql.streaming.StreamingQueryManager.createQuery(StreamingQueryManager.scala:232) 
at org.apache.spark.sql.streaming.StreamingQueryManager.startQuery(StreamingQueryManager.scala:269) 
at org.apache.spark.sql.streaming.DataStreamWriter.start(DataStreamWriter.scala:262) 
at org.apache.spark.sql.streaming.DataStreamWriter.start(DataStreamWriter.scala:206) 

感謝

回答

1

這是一個已知的問題:https://issues.apache.org/jira/browse/SPARK-19407

應固定在下一版本中。您可以使用--conf spark.hadoop.fs.defaultFS=hdfs://localhost:19000作爲解決方法將默認文件系統設置爲s3。

+0

它的工作原理,以及我使用:SparkSession.builder() .appName( 「火花數據處理」) 的.master( 「本地[2]」) 的.config( 「spark.hadoop.fs.defaultFS」, 「hdfs:// localhost:19000」) .getOrCreate(); – taniGroup

+0

是的,這是一樣的。 – zsxwing