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https://issues.apache.org/jira/browse/HADOOP-8329?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13278393#comment-13278393
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Trevor Robinson commented on HADOOP-8329:
-----------------------------------------
I get the same error with Oracle Java 7 (update 4).
> Hadoop-Common build fails with IBM Java 7 on branch-1.0
> -------------------------------------------------------
>
> Key: HADOOP-8329
> URL: https://issues.apache.org/jira/browse/HADOOP-8329
> Project: Hadoop Common
> Issue Type: Bug
> Components: build
> Affects Versions: 1.0.2, 1.0.3
> Reporter: Kumar Ravi
>
> I am seeing the following message running IBM Java 7 running branch-1.0 code.
> compile:
> [echo] contrib: gridmix
> [javac] Compiling 31 source files to
> /home/hadoop/branch-1.0_0427/build/contrib/gridmix/classes
> [javac]
> /home/hadoop/branch-1.0_0427/src/contrib/gridmix/src/java/org/apache/hadoop/mapred/gridmix/Gridmix.java:396:
> error: type argument ? extends T is not within bounds of type-variable E
> [javac] private <T> String getEnumValues(Enum<? extends T>[] e) {
> [javac] ^
> [javac] where T,E are type-variables:
> [javac] T extends Object declared in method <T>getEnumValues(Enum<? extends
> T>[])
> [javac] E extends Enum<E> declared in class Enum
> [javac]
> /home/hadoop/branch-1.0_0427/src/contrib/gridmix/src/java/org/apache/hadoop/mapred/gridmix/Gridmix.java:399:
> error: type argument ? extends T is not within bounds of type-variable E
> [javac] for (Enum<? extends T> v : e) {
> [javac] ^
> [javac] where T,E are type-variables:
> [javac] T extends Object declared in method <T>getEnumValues(Enum<? extends
> T>[])
> [javac] E extends Enum<E> declared in class Enum
> [javac] Note: Some input files use unchecked or unsafe operations.
> [javac] Note: Recompile with -Xlint:unchecked for details.
> [javac] 2 errors
> BUILD FAILED
> /home/hadoop/branch-1.0_0427/build.xml:703: The following error occurred
> while executing this line:
> /home/hadoop/branch-1.0_0427/src/contrib/build.xml:30: The following error
> occurred while executing this line:
> /home/hadoop/branch-1.0_0427/src/contrib/build-contrib.xml:185: Compile
> failed; see the compiler error output for details.
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