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https://issues.apache.org/jira/browse/HDFS-2331?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Suresh Srinivas updated HDFS-2331:
----------------------------------
Fix Version/s: (was: 1.1.0)
> Hdfs compilation fails
> ----------------------
>
> Key: HDFS-2331
> URL: https://issues.apache.org/jira/browse/HDFS-2331
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs client
> Affects Versions: 0.20.205.0, 0.24.0
> Reporter: Abhijit Suresh Shingate
> Assignee: Abhijit Suresh Shingate
> Fix For: 0.20.205.0, 0.23.0, 0.24.0
>
> Attachments: HDFS-2331-1.patch, HDFS-2331.patch
>
> Original Estimate: 1h
> Remaining Estimate: 1h
>
> I am trying to perform complete build from trunk folder but the compilation
> fails.
> *Commandline:*
> mvn clean install
> *Error Message:*
> [ERROR] Failed to execute goal
> org.apache.maven.plugins:maven-compiler-plugin:2.
> 3.2:compile (default-compile) on project hadoop-hdfs: Compilation failure
> [ERROR] \Hadoop\SVN\trunk\hadoop-hdfs-project\hadoop-hdfs\src\main\java\org
> \apache\hadoop\hdfs\web\WebHdfsFileSystem.java:[209,21] 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] -> [Help 1]
> [ERROR]
> [ERROR] To see the full stack trace of the errors, re-run Maven with the -e
> swit
> ch.
> [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
> rea
> d the following articles:
> [ERROR] [Help 1]
> http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureExc
> eption
> [ERROR]
> [ERROR] After correcting the problems, you can resume the build with the
> command
> This is because of known reason
> [http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6302954]
> {code:title=WebHdfsFileSystem.java|borderStyle=solid}
> Following is the code snippet with issue.
> private <T> T run(final HttpOpParam.Op op, final Path fspath,
> final Param<?,?>... parameters) throws IOException {
> final HttpURLConnection conn = httpConnect(op, fspath, parameters);
> validateResponse(op, conn);
> try {
> return jsonParse(conn.getInputStream());
> } finally {
> conn.disconnect();
> }
> }
> {code}
> Fix to the issue
> {code:title=WebHdfsFileSystem.java|borderStyle=solid}
> Following is the fix to the issue.
> private <T> T run(final HttpOpParam.Op op, final Path fspath,
> final Param<?,?>... parameters) throws IOException {
> final HttpURLConnection conn = httpConnect(op, fspath, parameters);
> validateResponse(op, conn);
> try {
> return WebHdfsFileSystem.<T>jsonParse(conn.getInputStream());
> } finally {
> conn.disconnect();
> }
> }
> {code}
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