[HIVE-6530] JDK 7 trunk build fails after HIVE-6418 patch

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 0.13.0
• Fix Version/s: 0.13.0
• Component/s: Query Processor
• Assignee: Navis Ryu
• Reporter: Prasad Suresh Mujumdar
• Created: 01/Mar/14 05:22
• Updated: 22/Mar/14 06:25
• Resolved: 04/Mar/14 17:56

Description

JDK7 build fails with following error

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project hive-exec: Compilation failure
[ERROR] /home/prasadm/repos/apache/hive-trunk/ql/src/java/org/apache/hadoop/hive/ql/exec/persistence/LazyFlatRowContainer.java:[118,15] name clash: add(java.util.List<java.lang.Object>) in org.apache.hadoop.hive.ql.exec.persistence.LazyFlatRowContainer overrides a method whose erasure is the same as another method, yet neither overrides the other
[ERROR] first method:  add(E) in java.util.AbstractCollection
[ERROR] second method: add(ROW) in org.apache.hadoop.hive.ql.exec.persistence.AbstractRowContainer
[ERROR] -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException
[ERROR] 
[ERROR] After correcting the problems, you can resume the build with the command
[ERROR]   mvn <goals> -rf :hive-exec

This LazyFlatRowContainer.java is a new file added as part of HIVE-6418 patch. It's extending AbstractCollection and implements AbstractRowContainer. Looks like the both these have a add() method that's conflicting.

Issue Links

• is duplicated by: HIVE-6542 build error with jdk 7
• is related to: HIVE-6418 MapJoinRowContainer has large memory overhead in typical cases