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From "Dongjoon Hyun (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (SPARK-22258) Writing empty dataset fails with ORC format
Date Thu, 12 Oct 2017 03:44:00 GMT

     [ https://issues.apache.org/jira/browse/SPARK-22258?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Dongjoon Hyun resolved SPARK-22258.
-----------------------------------
    Resolution: Duplicate

I missed the on going PR at SPARK-21762.

> Writing empty dataset fails with ORC format
> -------------------------------------------
>
>                 Key: SPARK-22258
>                 URL: https://issues.apache.org/jira/browse/SPARK-22258
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 2.3.0
>            Reporter: Dongjoon Hyun
>            Priority: Critical
>
> Since SPARK-8501, Spark doesn't create an ORC file for empty data sets. However, SPARK-21669
is trying to get the length of the written file and fails with FileNotFoundException. This
is a regression at 2.3.0 only. We had better have a test case to prevent future regression.
> {code}
> scala> Seq("str").toDS.limit(0).write.format("orc").save("/tmp/a")
> 17/10/11 19:28:59 ERROR Utils: Aborting task
> java.io.FileNotFoundException: File file:/tmp/a/_temporary/0/_temporary/attempt_20171011192859_0000_m_000000_0/part-00000-aa56c3cf-ec35-48f1-bb73-23ad1480e917-c000.snappy.orc
does not exist
> 	at org.apache.hadoop.fs.RawLocalFileSystem.deprecatedGetFileStatus(RawLocalFileSystem.java:611)
> 	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.spark.sql.execution.datasources.BasicWriteTaskStatsTracker.getFileSize(BasicWriteStatsTracker.scala:60)
> {code}



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