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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