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https://issues.apache.org/jira/browse/HADOOP-11776?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Li Lu updated HADOOP-11776:
---------------------------
Attachment: HADOOP-11776-040115.patch
Worked on this issue on top of [~ozawa]'s HADOOP-11377 patch. That patch
addressed the Null.java problem for me. In this patch I'm doing the following
things:
# Applied a quick fix for the jdiff compatibility param settings to eliminate
the package "" error. I'd appreciate if there's background information about
this setting, so that we can decide the correct long term fix.
# Run the maven script against branch-2.6.0 to generate two sample API files,
one for hadoop-common-project/hadoop-common and one for
hadoo-hdfs-project/hadoop-hdfs
# Fix the SAXParser not found exception when running jdiff.
After this fix, hadoop hdfs can have API diff report after {{mvn package -Pdocs
-DskipTests}} in its target/site/jdiff/xml folder. Hadoop common still has some
problem with jdiff: jdiff is complainging the following:
[javadoc] Error: duplicate comment id:
org.apache.hadoop.metrics2.MetricsSystem.register_changed(java.lang.String,
java.lang.String, T)
Since this is the only error we got in all components (we're also exploring
YARN-3426 for yarn-api, yarn-client, yarn-common, and yarn-server-common),
after briefly checking the original code of jdiff I highly suspect the error is
triggered by a bug of jdiff. However, I'm not sure if jdiff is still
maintained, so for long term fix we may want to find some alternative tools.
So far the script would generate a diff report for hdfs. I'm extending the YARN
part in YARN-3426.
The patch in HADOOP-11377 appears to work on my local machine.
> jdiff is broken in Hadoop 2
> ---------------------------
>
> Key: HADOOP-11776
> URL: https://issues.apache.org/jira/browse/HADOOP-11776
> Project: Hadoop Common
> Issue Type: Bug
> Affects Versions: 2.6.0
> Reporter: Li Lu
> Assignee: Li Lu
> Priority: Blocker
> Attachments: HADOOP-11776-040115.patch
>
>
> Seems like we haven't touch the API files from jdiff under dev-support for a
> while. For now we're missing the jdiff API files for hadoop 2. We're also
> missing YARN when generating the jdiff API files.
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