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https://issues.apache.org/jira/browse/PIG-924?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12745109#action_12745109
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Dmitriy V. Ryaboy commented on PIG-924:
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Regarding deprecation -- I tried setting it back to off, and adding
@SuppressWarnings("deprecation") to the shims for 20, but and complained about
deprecation nonetheless. Not sure what its deal is.
Adding something like this to the main build.xml works. Does this seem like a
reasonable solution?
{code}
<!-- set deprecation off if hadoop version greater or equals 20 -->
<target name="set_deprecation">
<condition property="hadoop_is20">
<equals arg1="${hadoop.version}" arg2="20"/>
</condition>
<antcall target="if_hadoop_is20"/>
<antcall target="if_hadoop_not20"/>
</target>
<target name="if_hadoop_is20" if="hadoop_is20">
<property name="javac.deprecation" value="off" />
</target>
<target name="if_hadoop_not20" unless="hadoop_is20">
<property name="javac.deprecation" value="on" />
</target>
<target name="init" depends="set_deprecation">
[....]
{code}
> Make Pig work with multiple versions of Hadoop
> ----------------------------------------------
>
> Key: PIG-924
> URL: https://issues.apache.org/jira/browse/PIG-924
> Project: Pig
> Issue Type: Bug
> Reporter: Dmitriy V. Ryaboy
> Attachments: pig_924.2.patch, pig_924.3.patch, pig_924.patch
>
>
> The current Pig build scripts package hadoop and other dependencies into the
> pig.jar file.
> This means that if users upgrade Hadoop, they also need to upgrade Pig.
> Pig has relatively few dependencies on Hadoop interfaces that changed between
> 18, 19, and 20. It is possibly to write a dynamic shim that allows Pig to
> use the correct calls for any of the above versions of Hadoop. Unfortunately,
> the building process precludes us from the ability to do this at runtime, and
> forces an unnecessary Pig rebuild even if dynamic shims are created.
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