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https://issues.apache.org/jira/browse/SPARK-2075?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14172394#comment-14172394
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Iulian Dragos commented on SPARK-2075:
--------------------------------------
The Scala compiler produces stable names for anonymous functions. In fact,
that's the reason why the name of the enclosing method is part of the name: so
that adding or removing an anonymous function in another method does not change
the numbering of the others. Names are assigned by using a per-compilation unit
counter and a prefix. Looking at the diff, there's quite a different picture in
the two cases (anonymous functions vs. anonymous classes). Are you sure the two
jars are built from the same sources?
I don't know how the `assembly` jar is produced, but if it's using some sort of
whole-program analysis and dead-code elimination, it might erroneously remove
them. It might help to look at the inputs to the assembly and see if the class
is already missing.
Another possibility is running `scalac -optimize` in only one of the two
builds. However, looking at current sources I can't see why the inliner would
remove those closures (the class is not final, and `map` is not final either,
so they can't be resolved and inlined)..
> Anonymous classes are missing from Spark distribution
> -----------------------------------------------------
>
> Key: SPARK-2075
> URL: https://issues.apache.org/jira/browse/SPARK-2075
> Project: Spark
> Issue Type: Bug
> Components: Build, Spark Core
> Affects Versions: 1.0.0
> Reporter: Paul R. Brown
> Priority: Critical
> Fix For: 1.0.1
>
>
> Running a job built against the Maven dep for 1.0.0 and the hadoop1
> distribution produces:
> {code}
> java.lang.ClassNotFoundException:
> org.apache.spark.rdd.RDD$$anonfun$saveAsTextFile$1
> {code}
> Here's what's in the Maven dep as of 1.0.0:
> {code}
> jar tvf
> ~/.m2/repository/org/apache/spark/spark-core_2.10/1.0.0/spark-core_2.10-1.0.0.jar
> | grep 'rdd/RDD' | grep 'saveAs'
> 1519 Mon May 26 13:57:58 PDT 2014
> org/apache/spark/rdd/RDD$anonfun$saveAsTextFile$1.class
> 1560 Mon May 26 13:57:58 PDT 2014
> org/apache/spark/rdd/RDD$anonfun$saveAsTextFile$2.class
> {code}
> And here's what's in the hadoop1 distribution:
> {code}
> jar tvf spark-assembly-1.0.0-hadoop1.0.4.jar| grep 'rdd/RDD' | grep 'saveAs'
> {code}
> I.e., it's not there. It is in the hadoop2 distribution:
> {code}
> jar tvf spark-assembly-1.0.0-hadoop2.2.0.jar| grep 'rdd/RDD' | grep 'saveAs'
> 1519 Mon May 26 07:29:54 PDT 2014
> org/apache/spark/rdd/RDD$anonfun$saveAsTextFile$1.class
> 1560 Mon May 26 07:29:54 PDT 2014
> org/apache/spark/rdd/RDD$anonfun$saveAsTextFile$2.class
> {code}
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