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Posted to common-issues@hadoop.apache.org by "Junping Du (JIRA)" <ji...@apache.org> on 2013/09/28 12:05:03 UTC

[jira] [Updated] (HADOOP-10006) Compilation failure in trunk for o.a.h.fs.swift.util.JSONUtil

     [ https://issues.apache.org/jira/browse/HADOOP-10006?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Junping Du updated HADOOP-10006:
--------------------------------

    Attachment: HADOOP-10006.patch

Seems like a type mismatch here, update a quick fix to cast to T type which works fine on my local env. 
Hi [~stevel@apache.org], it seems to be related to HADOOP-8545, would you help to look at it? Thx!
                
> Compilation failure in trunk for o.a.h.fs.swift.util.JSONUtil
> -------------------------------------------------------------
>
>                 Key: HADOOP-10006
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10006
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs, util
>            Reporter: Junping Du
>            Priority: Blocker
>         Attachments: HADOOP-10006.patch
>
>
> The error is like following:
> ...
> [ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.5.1:compile (default-compile) on project hadoop-openstack: Compilation failure: Compilation failure:
> [ERROR] /home/jdu/bdc/hadoop-trunk/hadoop-common/hadoop-tools/hadoop-openstack/src/main/java/org/apache/hadoop/fs/swift/util/JSONUtil.java:[97,33] type parameters of <T>T cannot be determined; no unique maximal instance exists for type variable T with upper bounds T,java.lang.Object
> [ERROR] /home/jdu/bdc/hadoop-trunk/hadoop-common/hadoop-tools/hadoop-openstack/src/main/java/org/apache/hadoop/fs/swift/util/JSONUtil.java:[115,33] type parameters of <T>T cannot be determined; no unique maximal instance exists for type variable T with upper bounds T,java.lang.Object

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