mvn compile -DskipTests -Dcommons.daemon.os.name=linux
-Dcommons.daemon.os.arch=i686

can't get it compiled - openjdk version "1.6.0_30". hadoop needs java 5?

[ERROR] Failed to execute goal
org.apache.maven.plugins:maven-compiler-plugin:2.3.2:compile
(default-compile) on project hadoop-mapreduce-client-core: Compilation
failure: Compilation failure:
[ERROR]
/tmp/hadoop-common/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/Counters.java:[93,49]
incompatible types; inferred type argument(s)
org.apache.hadoop.mapreduce.Counter,java.lang.Object do not conform to
bounds of type variable(s) C,G
[ERROR] found   : <C,G>java.lang.String
[ERROR] required: java.lang.String
[ERROR]
/tmp/hadoop-common/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/Counters.java:[576,33]
incompatible types; inferred type argument(s)
org.apache.hadoop.mapreduce.Counter,java.lang.Object do not conform to
bounds of type variable(s) C,G
[ERROR] found   : <C,G>java.lang.String
[ERROR] required: java.lang.String
[ERROR]
/tmp/hadoop-common/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/Counters.java:[588,36]
incompatible types; inferred type argument(s)
org.apache.hadoop.mapreduce.Counter,java.lang.Object do not conform to
bounds of type variable(s) C,G
[ERROR] found   : <C,G>org.apache.hadoop.mapred.Counters
[ERROR] required: org.apache.hadoop.mapred.Counters

> [ERROR]
> /tmp/hadoop-common/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/Counters.java:[93,49]
> incompatible types; inferred type argument(s)
> org.apache.hadoop.mapreduce.Counter,java.lang.Object do not conform to
> bounds of type variable(s) C,G
> [ERROR] found   : <C,G>java.lang.String
> [ERROR] required: java.lang.String
according to google, this error is openjdk specific, but i am on freebsd
and there is no Oracle Java.

Dne 5.4.2012 14:51, Radim Kolar napsal(a):
>
>> [ERROR]
>> /tmp/hadoop-common/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/Counters.java:[93,49]
>> incompatible types; inferred type argument(s)
>> org.apache.hadoop.mapreduce.Counter,java.lang.Object do not conform
>> to bounds of type variable(s) C,G
>> [ERROR] found   : <C,G>java.lang.String
>> [ERROR] required: java.lang.String
> according to google, this error is openjdk specific, but i am on
> freebsd and there is no Oracle Java.
oracle jdk6 works fine, openjdk7 works fine too. it would be great if
you update wiki page

http://wiki.apache.org/hadoop/HowToContribute?highlight=%28contribut%29

Radim,

This should already be fixed in branch-2 (Compilation with OpenJDK6).
Can you check there as well? Why are you building 0.23.1 specifically
though?

2012/4/5 Radim Kolar <[EMAIL PROTECTED]>:
> Dne 5.4.2012 14:51, Radim Kolar napsal(a):
>
>>
>>> [ERROR]
>>> /tmp/hadoop-common/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/Counters.java:[93,49]
>>> incompatible types; inferred type argument(s)
>>> org.apache.hadoop.mapreduce.Counter,java.lang.Object do not conform to
>>> bounds of type variable(s) C,G
>>> [ERROR] found   : <C,G>java.lang.String
>>> [ERROR] required: java.lang.String
>>
>> according to google, this error is openjdk specific, but i am on freebsd
>> and there is no Oracle Java.
>
> oracle jdk6 works fine, openjdk7 works fine too. it would be great if you
> update wiki page
>
> http://wiki.apache.org/hadoop/HowToContribute?highlight=%28contribut%29

--
Harsh J

Dne 5.4.2012 21:52, Harsh J napsal(a):
> Radim,
>
> This should already be fixed in branch-2 (Compilation with OpenJDK6).
> Can you check there as well?
submitted job to CI
>   Why are you building 0.23.1 specifically though?
building on freebsd is not easy, so i needed to start with something
which is known to build ok.

>> This should already be fixed in branch-2 (Compilation with OpenJDK6).
>> Can you check there as well?
> submitted job to CI
build failed due to MAPREDUCE-4115