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https://issues.apache.org/jira/browse/HADOOP-19717?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18028142#comment-18028142
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ASF GitHub Bot commented on HADOOP-19717:
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slfan1989 commented on PR #8015:
URL: https://github.com/apache/hadoop/pull/8015#issuecomment-3377550294
@szetszwo Thank you very much for the review!
> Resolve build error caused by missing Checker Framework (NonNull not
> recognized)
> --------------------------------------------------------------------------------
>
> Key: HADOOP-19717
> URL: https://issues.apache.org/jira/browse/HADOOP-19717
> Project: Hadoop Common
> Issue Type: Bug
> Components: hdfs, tos
> Reporter: Shilun Fan
> Assignee: Shilun Fan
> Priority: Major
> Labels: pull-request-available
>
> In the recent build, we encountered the following issue:
> *org.checkerframework.checker.nullness.qual.NonNull* could not be recognized,
> and the following error was observed.
> {code:java}
> [ERROR]
> /home/jenkins/jenkins-agent/workspace/hadoop-multibranch_PR-8011/ubuntu-focal/src/hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterRpcServer.java:[216,50]
> package org.checkerframework.checker.nullness.qual does not exist
> [ERROR]
> /home/jenkins/jenkins-agent/workspace/hadoop-multibranch_PR-8011/ubuntu-focal/src/hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterRpcServer.java:[2509,30]
> cannot find symbol
> [ERROR] symbol: class NonNull
> [ERROR] location: class
> org.apache.hadoop.hdfs.server.federation.router.RouterRpcServer.AsyncThreadFactory
> {code}
> I checked the usage in the related modules, and we should use
> *org.apache.hadoop.thirdparty.org.checkerframework.checker.nullness.qual.NonNull*
> instead of directly using
> {*}org.checkerframework.checker.nullness.qual.NonNull{*}.
>
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