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https://issues.apache.org/jira/browse/HADOOP-15133?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16298156#comment-16298156
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Akira Ajisaka commented on HADOOP-15133:
----------------------------------------
After applying the patch, {{mvn install -DskipTests -DskipShade}} fails with
JDK9:
{noformat}
[ERROR] Failed to execute goal
org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on
project hadoop-common: Compilation failure: Compilation failure:
[ERROR]
/Users/ajisaka/git/hadoop/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/nativeio/NativeIO.java:[333,17]
cannot find symbol
[ERROR] symbol: class Cleaner
[ERROR] location: package sun.misc
[ERROR]
/Users/ajisaka/git/hadoop/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/CryptoStreamUtils.java:[40,21]
cannot find symbol
[ERROR] symbol: class Cleaner
[ERROR] location: package sun.misc
[ERROR] -> [Help 1]
{noformat}
This error can be fixed by applying HADOOP-12760.
> [JDK9] Ignore com.sun.javadoc.* and com.sun.tools.* in
> animal-sniffer-maven-plugin to compile with Java 9
> ---------------------------------------------------------------------------------------------------------
>
> Key: HADOOP-15133
> URL: https://issues.apache.org/jira/browse/HADOOP-15133
> Project: Hadoop Common
> Issue Type: Sub-task
> Reporter: Akira Ajisaka
> Assignee: Akira Ajisaka
> Attachments: HADOOP-15133.001.patch
>
>
> com.sun.javadoc and com.sun.tools are internal APIs and are not included in
> java18 profile, so signature check fails with JDK9.
> {noformat}
> $ mvn clean install -DskipTests -DskipShade
> (snip)
> [INFO] --- animal-sniffer-maven-plugin:1.16:check (signature-check) @
> hadoop-annotations ---
> [INFO] Checking unresolved references to
> org.codehaus.mojo.signature:java18:1.0
> [ERROR]
> /Users/ajisaka/git/hadoop/hadoop-common-project/hadoop-annotations/src/main/java/org/apache/hadoop/classification/tools/RootDocProcessor.java:56:
> Undefined reference: com.sun.javadoc.RootDoc
> (snip)
> {noformat}
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