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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-8479) AggregateClient breaks bigtop compile
Date Thu, 02 May 2013 05:24:16 GMT
stack created HBASE-8479:
----------------------------

             Summary: AggregateClient breaks bigtop compile
                 Key: HBASE-8479
                 URL: https://issues.apache.org/jira/browse/HBASE-8479
             Project: HBase
          Issue Type: Bug
          Components: build
    Affects Versions: 0.95.1
            Reporter: stack
            Priority: Critical
             Fix For: 0.95.1
         Attachments: attempt1.txt

With Roman, am trying to set up a bigtop ci of hbase 0.95 only we fail to compile.  It is
the exotic generics that are going on over in AggregateClient.  Here is how we fail:

{code}
[ERROR] COMPILATION ERROR : 
[INFO] -------------------------------------------------------------
[ERROR] /mnt/jenkins/workspace/HBase-0.95/label/centos6/build/hbase/rpm/BUILD/hbase-0.95-SNAPSHOT/hbase-client/src/main/java/org/apache/hadoop/hbase/client/coprocessor/AggregationClient.java:[135,59]
type parameters of <T>T cannot be determined; no unique maximal instance exists for
type variable T with upper bounds Q,com.google.protobuf.Message
[ERROR] /mnt/jenkins/workspace/HBase-0.95/label/centos6/build/hbase/rpm/BUILD/hbase-0.95-SNAPSHOT/hbase-client/src/main/java/org/apache/hadoop/hbase/client/coprocessor/AggregationClient.java:[208,59]
type parameters of <T>T cannot be determined; no unique maximal instance exists for
type variable T with upper bounds Q,com.google.protobuf.Message
[ERROR] /mnt/jenkins/workspace/HBase-0.95/label/centos6/build/hbase/rpm/BUILD/hbase-0.95-SNAPSHOT/hbase-client/src/main/java/org/apache/hadoop/hbase/client/coprocessor/AggregationClient.java:[328,57]
type parameters of <T>T cannot be determined; no unique maximal instance exists for
type variable T with upper bounds T,com.google.protobuf.Message
[ERROR] /mnt/jenkins/workspace/HBase-0.95/label/centos6/build/hbase/rpm/BUILD/hbase-0.95-SNAPSHOT/hbase-client/src/main/java/org/apache/hadoop/hbase/client/coprocessor/AggregationClient.java:[390,57]
type parameters of <T>T cannot be determined; no unique maximal instance exists for
type variable T with upper bounds T,com.google.protobuf.Message
[ERROR] /mnt/jenkins/workspace/HBase-0.95/label/centos6/build/hbase/rpm/BUILD/hbase-0.95-SNAPSHOT/hbase-client/src/main/java/org/apache/hadoop/hbase/client/coprocessor/AggregationClient.java:[489,59]
type parameters of <T>T cannot be determined; no unique maximal instance exists for
type variable T with upper bounds T,com.google.protobuf.Message
[ERROR] /mnt/jenkins/workspace/HBase-0.95/label/centos6/build/hbase/rpm/BUILD/hbase-0.95-SNAPSHOT/hbase-client/src/main/java/org/apache/hadoop/hbase/client/coprocessor/AggregationClient.java:[591,59]
type parameters of <T>T cannot be determined; no unique maximal instance exists for
type variable T with upper bounds T,com.google.protobuf.Message
[INFO] 6 errors 
{code}

I cannot reproduce locally but googling, I see that above is pretty common complaint when
you move between compilers.  Various are the recommendations for fix but none definitive.
 The easiest is dumbing down the generics which I tried but it only caused issues in other
coprocessors.

If clues on how to fix this, I'm all ears.  Would like to get this bigtop ci build running.
 Its cool.

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